07 zg��o�� si��

TheInfoList

OR:

7 (seven) is the
natural number In mathematics, the natural numbers are those numbers used for counting (as in "there are ''six'' coins on the table") and ordering (as in "this is the ''third'' largest city in the country"). Numbers used for counting are called '' cardinal ...
following 6 and preceding 8. It is the only
prime number A prime number (or a prime) is a natural number greater than 1 that is not a product of two smaller natural numbers. A natural number greater than 1 that is not prime is called a composite number. For example, 5 is prime because the only ways ...
preceding a
cube In geometry, a cube is a three-dimensional solid object bounded by six square faces, facets or sides, with three meeting at each vertex. Viewed from a corner it is a hexagon and its net is usually depicted as a cross. The cube is the onl ...
. As an early
prime number A prime number (or a prime) is a natural number greater than 1 that is not a product of two smaller natural numbers. A natural number greater than 1 that is not prime is called a composite number. For example, 5 is prime because the only ways ...
in the series of
positive integers In mathematics, the natural numbers are those numbers used for counting (as in "there are ''six'' coins on the table") and ordering (as in "this is the ''third'' largest city in the country"). Numbers used for counting are called '' cardinal ...
, the number seven has greatly symbolic associations in
religion Religion is usually defined as a social- cultural system of designated behaviors and practices, morals, beliefs, worldviews, texts, sanctified places, prophecies, ethics, or organizations, that generally relates humanity to supernatural ...
,
mythology Myth is a folklore genre consisting of narratives that play a fundamental role in a society, such as foundational tales or origin myths. Since "myth" is widely used to imply that a story is not objectively true, the identification of a narrat ...
,
superstition A superstition is any belief or practice considered by non-practitioners to be irrational or supernatural, attributed to fate or magic, perceived supernatural influence, or fear of that which is unknown. It is commonly applied to beliefs and ...
and
philosophy Philosophy (from , ) is the systematized study of general and fundamental questions, such as those about existence, reason, knowledge, values, mind, and language. Such questions are often posed as problems to be studied or resolved. Som ...
. The seven
Classical planet In classical antiquity, the seven classical planets or seven luminaries are the seven moving astronomical objects in the sky visible to the naked eye: the Moon, Mercury, Venus, the Sun, Mars, Jupiter, and Saturn. The word '' planet'' come ...
s resulted in seven being the number of days in a week. It is often considered
luck Luck is the phenomenon and belief that defines the experience of improbable events, especially improbably positive or negative ones. The naturalistic interpretation is that positive and negative events may happen at any time, both due to rand ...
y in
Western culture Leonardo da Vinci's ''Vitruvian Man''. Based on the correlations of ideal Body proportions">human proportions with geometry described by the ancient Roman architect Vitruvius in Book III of his treatise ''De architectura''. image:Plato Pio-Cle ...
and is often seen as highly symbolic. Unlike
Western culture Leonardo da Vinci's ''Vitruvian Man''. Based on the correlations of ideal Body proportions">human proportions with geometry described by the ancient Roman architect Vitruvius in Book III of his treatise ''De architectura''. image:Plato Pio-Cle ...
, in Vietnamese culture, the number seven is sometimes considered unlucky. It is the first natural number whose pronunciation contains more than one syllable.

# Evolution of the Arabic digit

In the beginning, Indians wrote 7 more or less in one stroke as a curve that looks like an uppercase vertically inverted. The western Ghubar Arabs' main contribution was to make the longer line diagonal rather than straight, though they showed some tendencies to making the digit more rectilinear. The eastern Arabs developed the digit from a form that looked something like our 6 to one that looked like an uppercase V. Both modern Arab forms influenced the European form, a two-stroke form consisting of a horizontal upper stroke joined at its right to a stroke going down to the bottom left corner, a line that is slightly curved in some font variants. As is the case with the
Europe Europe is a large peninsula conventionally considered a continent in its own right because of its great physical size and the weight of its history and traditions. Europe is also considered a Continent#Subcontinents, subcontinent of Eurasia ...
an digit, the Cham and Khmer digit for 7 also evolved to look like their digit 1, though in a different way, so they were also concerned with making their 7 more different. For the Khmer this often involved adding a horizontal line to the top of the digit. This is analogous to the horizontal stroke through the middle that is sometimes used in handwriting in the Western world but which is almost never used in computer fonts. This horizontal stroke is, however, important to distinguish the glyph for seven from the glyph for one in writing that uses a long upstroke in the glyph for 1. In some Greek dialects of the early 12th century the longer line diagonal was drawn in a rather semicircular transverse line. On the
seven-segment display A seven-segment display is a form of electronic display device for displaying decimal numerals that is an alternative to the more complex dot matrix displays. Seven-segment displays are widely used in digital clocks, electronic meters, basic c ...
s of pocket calculators and digital watches, 7 is the digit with the most common graphic variation (1, 6 and 9 also have variant glyphs). Most calculators use three line segments, but on Sharp,
Casio is a Japanese multinational electronics manufacturing corporation headquartered in Shibuya, Tokyo, Japan. Its products include calculators, mobile phones, digital cameras, electronic musical instruments, and analogue and digital watches. It ...
, and a few other brands of calculators, 7 is written with four line segments because in Japan, Korea and Taiwan 7 is written with a "hook" on the left, as ① in the following illustration. While the shape of the character for the digit 7 has an ascender in most modern
typeface A typeface (or font family) is the design of lettering that can include variations in size, weight (e.g. bold), slope (e.g. italic), width (e.g. condensed), and so on. Each of these variations of the typeface is a font. There are thousands o ...
s, in typefaces with
text figures Text figures (also known as non-lining, lowercase, old style, ranging, hanging, medieval, billing, or antique figures or numerals) are numerals designed with varying heights in a fashion that resembles a typical line of running text, hence the ...
the character usually has a descender, as, for example, in . Most people in Continental Europe, and some in Britain and Ireland as well as Latin America, write 7 with a line in the middle ("7"), sometimes with the top line crooked. The line through the middle is useful to clearly differentiate the digit from the digit one, as the two can appear similar when written in certain styles of handwriting. This form is used in official handwriting rules for primary school in Russia, Ukraine, Bulgaria, Poland, other Slavic countries, France, Italy, Belgium, Finland, Romania, Germany, Greece, and Hungary.

# Mathematics

Seven, the fourth
prime number A prime number (or a prime) is a natural number greater than 1 that is not a product of two smaller natural numbers. A natural number greater than 1 that is not prime is called a composite number. For example, 5 is prime because the only ways ...
, is not only a
Mersenne prime In mathematics, a Mersenne prime is a prime number that is one less than a power of two. That is, it is a prime number of the form for some integer . They are named after Marin Mersenne, a French Minim friar, who studied them in the early 17t ...
(since ) but also a
double Mersenne prime In mathematics, a double Mersenne number is a Mersenne number of the form :M_ = 2^-1 where ''p'' is prime. Examples The first four terms of the sequence of double Mersenne numbers areChris Caldwell''Mersenne Primes: History, Theorems and Lis ...
since the exponent, 3, is itself a Mersenne prime. It is also a Newman–Shanks–Williams prime, a Woodall prime, a factorial prime, a lucky prime, a
happy number In number theory, a happy number is a number which eventually reaches 1 when replaced by the sum of the square of each digit. For instance, 13 is a happy number because 1^2+3^2=10, and 1^2+0^2=1. On the other hand, 4 is not a happy number because ...
(happy prime), a
safe prime In number theory, a prime number ''p'' is a if 2''p'' + 1 is also prime. The number 2''p'' + 1 associated with a Sophie Germain prime is called a . For example, 11 is a Sophie Germain prime and 2 × 11 +  ...
(the only ), a Leyland prime of the second kind and the fourth
Heegner number In number theory, a Heegner number (as termed by Conway and Guy) is a square-free positive integer ''d'' such that the imaginary quadratic field \Q\left sqrt\right/math> has class number 1. Equivalently, its ring of integers has unique factori ...
. *Seven is the lowest natural number that cannot be represented as the sum of the squares of three integers. (See Lagrange's four-square theorem#Historical development.) *Seven is the
aliquot sum In number theory, the aliquot sum ''s''(''n'') of a positive integer ''n'' is the sum of all proper divisors of ''n'', that is, all divisors of ''n'' other than ''n'' itself. That is, :s(n)=\sum\nolimits_d. It can be used to characterize the prime ...
of one number, the cubic number and is the base of the 7-aliquot tree. *7 is the only number ''D'' for which the equation has more than two solutions for ''n'' and ''x'' natural. In particular, the equation is known as the Ramanujan–Nagell equation. *7 is the only dimension, besides the familiar 3, in which a vector
cross product In mathematics, the cross product or vector product (occasionally directed area product, to emphasize its geometric significance) is a binary operation on two vectors in a three-dimensional oriented Euclidean vector space (named here E), and is d ...
can be defined. *7 is the lowest
dimension In physics and mathematics, the dimension of a mathematical space (or object) is informally defined as the minimum number of coordinates needed to specify any point within it. Thus, a line has a dimension of one (1D) because only one coordi ...
of a known exotic sphere, although there may exist as yet unknown exotic smooth structures on the 4-dimensional sphere. * divided by 7 is exactly . Therefore, when a vulgar fraction with 7 in the
denominator A fraction (from la, fractus, "broken") represents a part of a whole or, more generally, any number of equal parts. When spoken in everyday English, a fraction describes how many parts of a certain size there are, for example, one-half, eight ...
is converted to a
decimal The decimal numeral system (also called the base-ten positional numeral system and denary or decanary) is the standard system for denoting integer and non-integer numbers. It is the extension to non-integer numbers of the Hindu–Arabic nume ...
expansion, the result has the same six- digit repeating sequence after the decimal point, but the sequence can start with any of those six digits. For example, and :In fact, if one sorts the digits in the number 142,857 in ascending order, 124578, it is possible to know from which of the digits the decimal part of the number is going to begin with. The remainder of dividing any number by 7 will give the position in the sequence 124578 that the decimal part of the resulting number will start. For example, 628 ÷ 7 = ; here 5 is the remainder, and would correspond to number 7 in the ranking of the ascending sequence. So in this case, . Another example, , hence the remainder is 2, and this corresponds to number 2 in the sequence. In this case, . *A seven-sided shape is a heptagon. The regular ''n''-gons for ''n'' ≤ 6 can be constructed by compass and straightedge alone, but the regular heptagon cannot. Figurate numbers representing heptagons (including seven) are called heptagonal numbers. Seven is also a
centered hexagonal number In mathematics and combinatorics, a centered hexagonal number, or hex number, is a centered figurate number that represents a hexagon with a dot in the center and all other dots surrounding the center dot in a hexagonal lattice. The following ...
. *There are seven
frieze group In mathematics, a frieze or frieze pattern is a two-dimensional design that repeats in one direction. Such patterns occur frequently in architecture and decorative art. Frieze patterns can be classified into seven types according to their symmetri ...
s, the groups consisting of symmetries of the plane whose group of
translations Translation is the communication of the meaning of a source-language text by means of an equivalent target-language text. The English language draws a terminological distinction (which does not exist in every language) between ''translat ...
is
isomorphic In mathematics, an isomorphism is a structure-preserving mapping between two structures of the same type that can be reversed by an inverse mapping. Two mathematical structures are isomorphic if an isomorphism exists between them. The word i ...
to the group of integers. *There are seven fundamental types of catastrophes. *When rolling two standard six-sided
dice Dice (singular die or dice) are small, throwable objects with marked sides that can rest in multiple positions. They are used for generating random values, commonly as part of tabletop games, including dice games, board games, role-playing ga ...
, seven has a 6 in 6 (or ) probability of being rolled (1–6, 6–1, 2–5, 5–2, 3–4, or 4–3), the greatest of any number. The opposite sides of a standard six-sided dice always add to 7. *The
Millennium Prize Problems The Millennium Prize Problems are seven well-known complex mathematical problems selected by the Clay Mathematics Institute in 2000. The Clay Institute has pledged a US\$1 million prize for the first correct solution to each problem. According ...
are seven problems in
mathematics Mathematics is an area of knowledge that includes the topics of numbers, formulas and related structures, shapes and the spaces in which they are contained, and quantities and their changes. These topics are represented in modern mathematics ...
that were stated by the
Clay Mathematics Institute The Clay Mathematics Institute (CMI) is a private, non-profit foundation dedicated to increasing and disseminating mathematical knowledge. Formerly based in Peterborough, New Hampshire, the corporate address is now in Denver, Colorado. CMI's sc ...
in 2000. Currently, six of the problems remain unsolved.

# In science

* Seven colors in a rainbow: ROYGBIV * Seven
Continent A continent is any of several large landmasses. Generally identified by convention rather than any strict criteria, up to seven geographical regions are commonly regarded as continents. Ordered from largest in area to smallest, these seven ...
s *
Seven Seas The "Seven Seas" is a figurative term for all the seas of the known world. The phrase is used in reference to sailors and pirates in the arts and popular culture and can be associated with the Mediterranean Sea, the Arabian Seven Seas east of Af ...
* Seven climes * The neutral pH balance * Number of music notes in a scale * Number of spots most commonly found on ladybugs * Atomic number for
Nitrogen Nitrogen is the chemical element with the symbol N and atomic number 7. Nitrogen is a nonmetal and the lightest member of group 15 of the periodic table, often called the pnictogens. It is a common element in the universe, estimated at seven ...

## In Psychology

* Seven, plus or minus two as a model of
working memory Working memory is a cognitive system with a limited capacity that can hold information temporarily. It is important for reasoning and the guidance of decision-making and behavior. Working memory is often used synonymously with short-term memory, ...
. * Seven psychological types called the Seven Rays in the teachings of Alice A. Bailey * In Western Culture, Seven is consistently listed as people's favorite number. * When guessing numbers 1-10 the number 7 is most likely to be picked. * Seven-year itch: happiness in marriage said to decline after 7 years

# Classical antiquity

The
Pythagoreans Pythagoreanism originated in the 6th century BC, based on and around the teachings and beliefs held by Pythagoras and his followers, the Pythagoreans. Pythagoras established the first Pythagorean community in the ancient Greek colony of Kroton, ...
invested particular numbers with unique spiritual properties. The number seven was considered to be particularly interesting because it consisted of the union of the physical (number 4) with the spiritual (number 3). In Pythagorean
numerology Numerology (also known as arithmancy) is the belief in an occult, divine or mystical relationship between a number and one or more coinciding events. It is also the study of the numerical value, via an alphanumeric system, of the letters in w ...
the number 7 means spirituality. References from classical antiquity to the number seven include: *Seven
Classical planets In classical antiquity, the seven classical planets or seven luminaries are the seven moving astronomical objects in the sky visible to the naked eye: the Moon, Mercury, Venus, the Sun, Mars, Jupiter, and Saturn. The word ''planet'' comes f ...
and the derivative Seven Heavens * Seven Wonders of the ancient world *Seven
metals of antiquity The metals of antiquity are the seven metals which humans had identified and found use for in prehistoric times in Europe and the Middle East: gold, silver, copper, tin, lead, iron, and mercury. These seven are the metals from which the moder ...
* Seven days in the week *
Seven Seas The "Seven Seas" is a figurative term for all the seas of the known world. The phrase is used in reference to sailors and pirates in the arts and popular culture and can be associated with the Mediterranean Sea, the Arabian Seven Seas east of Af ...
* Seven Sages * Seven champions that fought Thebes * Seven hills of Rome and Seven Kings of Rome * Seven Sisters, the daughters of
Atlas An atlas is a collection of maps; it is typically a bundle of maps of Earth or of a region of Earth. Atlases have traditionally been bound into book form, but today many atlases are in multimedia formats. In addition to presenting geograph ...
also known as the
Pleiades The Pleiades (), also known as The Seven Sisters, Messier 45 and other names by different cultures, is an asterism and an open star cluster containing middle-aged, hot B-type stars in the north-west of the constellation Taurus. At a distance ...

# Religion and mythology

## Judaism

The number seven forms a widespread typological pattern within Hebrew scripture, including: *Seven days (more precisely
yom Yom ( he, יום) is a Biblical Hebrew word which occurs in the Hebrew Bible. The word means day in both Modern and Biblical Hebrew. Overview Although ''yom'' is commonly rendered as day in English translations, the word yom can be used in differ ...
) of Creation, leading to the seventh day or Sabbath (Genesis 1) *Seven-fold vengeance visited on upon Cain for the killing of
Abel Abel ''Hábel''; ar, هابيل, Hābīl is a Biblical figure in the Book of Genesis within Abrahamic religions. He was the younger brother of Cain, and the younger son of Adam and Eve, the first couple in Biblical history. He was a shepherd ...
(Genesis 4:15) *Seven pairs of every clean animal loaded onto the ark by Noah (Genesis 7:2) *Seven years of plenty and seven years of famine in Pharaoh's dream (Genesis 41) *Seventh son of Jacob, Gad, whose name means good luck (Genesis 46:16) *Seven times bullock's blood is sprinkled before God (Leviticus 4:6) *Seven nations God told the
Israelite The Israelites (; , , ) were a group of Semitic-speaking tribes in the ancient Near East who, during the Iron Age, inhabited a part of Canaan. The earliest recorded evidence of a people by the name of Israel appears in the Merneptah Stel ...
s they would displace when they entered the land of
Israel Israel (; he, יִשְׂרָאֵל, ; ar, إِسْرَائِيل, ), officially the State of Israel ( he, מְדִינַת יִשְׂרָאֵל, label=none, translit=Medīnat Yīsrāʾēl; ), is a country in Western Asia. It is situated ...
(Deuteronomy 7:1) *Seven days of the
Passover Passover, also called Pesach (; ), is a major Jewish holiday that celebrates the The Exodus, Biblical story of the Israelites escape from slavery in Egypt, which occurs on the 15th day of the Hebrew month of Nisan, the first month of Aviv, o ...
feast (Exodus 13:3–10) *Seven-branched candelabrum or Menorah (Exodus 25) *Seven
trumpets The trumpet is a brass instrument commonly used in classical and jazz ensembles. The trumpet group ranges from the piccolo trumpet—with the highest register in the brass family—to the bass trumpet, pitched one octave below the standard B ...
played by seven priests for seven days to bring down the walls of Jericho (Joshua 6:8) *Seven things that are detestable to God (Proverbs 6:16–19) *Seven Pillars of the
House of Wisdom The House of Wisdom ( ar, بيت الحكمة, Bayt al-Ḥikmah), also known as the Grand Library of Baghdad, refers to either a major Abbasid public academy and intellectual center in Baghdad or to a large private library belonging to the Abba ...
(Proverbs 9:1) *Seven archangels in the deuterocanonical
Book of Tobit The Book of Tobit () ''Tōbith'' or ''Tōbit'' ( and spellings are also attested) itself from he, טובי ''Tovi'' "my good"; Book of Tobias in the Vulgate from the Greek ''Tōbias'', itself from the Hebrew ''Tovyah'' " Yah is good", also k ...
(12:15) References to the number seven in Jewish knowledge and practice include: *Seven divisions of the weekly readings or
aliyah Aliyah (, ; he, עֲלִיָּה ''ʿălīyyā'', ) is the immigration of Jews from the diaspora to, historically, the geographical Land of Israel, which is in the modern era chiefly represented by the State of Israel. Traditionally describe ...
of the
Torah The Torah (; hbo, ''Tōrā'', "Instruction", "Teaching" or "Law") is the compilation of the first five books of the Hebrew Bible, namely the books of Genesis, Exodus, Leviticus, Numbers and Deuteronomy. In that sense, Torah means the ...
*Seven Jewish men (over the age of 13) called to read aliyahs in
Shabbat Shabbat (, , or ; he, שַׁבָּת, Šabbāṯ, , ) or the Sabbath (), also called Shabbos (, ) by Ashkenazim, is Judaism's day of rest on the seventh day of the week—i.e., Saturday. On this day, religious Jews remember the biblical stori ...
morning services *Seven blessings recited under the chuppah during a Jewish wedding ceremony *Seven days of festive meals for a Jewish bride and groom after their wedding, known as Sheva Berachot or Seven Blessings *Seven Ushpizzin prayers to the Jewish patriarchs during the holiday of Sukkot

## Christianity

Following the traditional of the Hebrew Bible, the
New Testament The New Testament grc, Ἡ Καινὴ Διαθήκη, transl. ; la, Novum Testamentum. (NT) is the second division of the Christian biblical canon. It discusses the teachings and person of Jesus, as well as events in first-century Christ ...
likewise uses the number seven as part of a typological pattern: *Seven loaves multiplied into seven basketfuls of surplus (Matthew 15:32–37) *Seven
demons A demon is a malevolent supernatural entity. Historically, belief in demons, or stories about demons, occurs in religion, occultism, literature, fiction, mythology, and folklore; as well as in media such as comics, video games, movies, anim ...
were driven out of
Mary Magdalene Mary Magdalene (sometimes called Mary of Magdala, or simply the Magdalene or the Madeleine) was a woman who, according to the four canonical gospels, traveled with Jesus as one of his followers and was a witness to his crucifixion and resurr ...
(Luke 8:2) * Seven last sayings of Jesus on the cross *Seven men of honest report, full of the Holy Ghost and wisdom (Acts 6:3) * Seven Spirits of God, Seven Churches and Seven Seals in the
Book of Revelation The Book of Revelation is the final book of the New Testament (and consequently the final book of the Christian Bible). Its title is derived from the first word of the Koine Greek text: , meaning "unveiling" or "revelation". The Book of ...
References to the number seven in Christian knowledge and practice include: * Seven Gifts of the Holy Spirit * Seven Corporal Acts of Mercy and Seven Spiritual Acts of Mercy * Seven deadly sins: lust, gluttony, greed, sloth, wrath, envy, and pride, and seven terraces of Mount
Purgatory Purgatory (, borrowed into English via Anglo-Norman and Old French) is, according to the belief of some Christian denominations (mostly Catholic), an intermediate state after physical death for expiatory purification. The process of purgator ...
* Seven Virtues: chastity, temperance, charity, diligence, kindness, patience, and humility * Seven Joys and Seven Sorrows of the Virgin Mary *
Seven Sleepers In the Islamic and Christian traditions, the Seven Sleepers, otherwise known as the Sleepers of Ephesus and Companions of the Cave, is a medieval legend about a group of youths who hid inside a cave outside the city of Ephesus (modern-day Selç ...
of Christian myth *Seven
Sacraments A sacrament is a Christian rite that is recognized as being particularly important and significant. There are various views on the existence and meaning of such rites. Many Christians consider the sacraments to be a visible symbol of the rea ...
in the Catholic Church (though some traditions assign a different number)

## Islam

References to the number seven in Islamic knowledge and practice include: *Seven ayat in surat
al-Fatiha Al-Fatiha (alternatively transliterated Al-Fātiḥa or Al-Fātiḥah; ar, ألْفَاتِحَة, ; ), is the first ''surah'' (chapter) of the Quran. It consists of 7 '' ayah'' (verses) which are a prayer for guidance and mercy. Al-Fatiha ...
, the first book of the holy
Qur'an The Quran (, ; Standard Arabic: , Quranic Arabic: , , 'the recitation'), also romanized Qur'an or Koran, is the central religious text of Islam, believed by Muslims to be a revelation from God. It is organized in 114 chapters (pl.: , sin ...
*Seven circumambulations of Muslim pilgrims around the
Kaaba The Kaaba (, ), also spelled Ka'bah or Kabah, sometimes referred to as al-Kaʿbah al-Musharrafah ( ar, ٱلْكَعْبَة ٱلْمُشَرَّفَة, lit=Honored Ka'bah, links=no, translit=al-Kaʿbah al-Musharrafah), is a building at the c ...
in
Mecca Mecca (; officially Makkah al-Mukarramah, commonly shortened to Makkah ()) is a city and administrative center of the Mecca Province of Saudi Arabia, and the holiest city in Islam. It is inland from Jeddah on the Red Sea, in a narrow val ...
during the
Hajj The Hajj (; ar, حَجّ '; sometimes also spelled Hadj, Hadji or Haj in English) is an annual Islamic pilgrimage to Mecca, Saudi Arabia, the holiest city for Muslims. Hajj is a mandatory religious duty for Muslims that must be carried ...
and the Umrah *Seven walks between Al-Safa and Al-Marwah performed Muslim pilgrims during the
Hajj The Hajj (; ar, حَجّ '; sometimes also spelled Hadj, Hadji or Haj in English) is an annual Islamic pilgrimage to Mecca, Saudi Arabia, the holiest city for Muslims. Hajj is a mandatory religious duty for Muslims that must be carried ...
and the Umrah *Seven doors to hell (for heaven the number of doors is eight) *Seventh day naming ceremony held for babies *Seven enunciators of divine revelation (''nāṭiqs'') according to the celebrated
Fatimid The Fatimid Caliphate was an Ismaili Shi'a caliphate extant from the tenth to the twelfth centuries AD. Spanning a large area of North Africa, it ranged from the Atlantic Ocean in the west to the Red Sea in the east. The Fatimids, a dyn ...
Ismaili Isma'ilism ( ar, الإسماعيلية, al-ʾIsmāʿīlīyah) is a branch or sub-sect of Shia Islam. The Isma'ili () get their name from their acceptance of Imam Isma'il ibn Jafar as the appointed spiritual successor ( imām) to Ja'far al-S ...
dignitary
Nasir Khusraw Abu Mo’in Hamid ad-Din Nasir ibn Khusraw al-Qubadiani or Nāsir Khusraw Qubādiyānī Balkhi ( fa, ناصر خسرو قبادیانی, Nasir Khusraw Qubadiani) also spelled as ''Nasir Khusrow'' and ''Naser Khosrow'' (1004 – after 1070 CE) w ...
* Circle Seven Koran, the holy scripture of the Moorish Science Temple of America

## Hinduism

References to the number seven in Hindu knowledge and practice include: *Seven worlds in the universe and seven seas in the world in Hindu cosmology *Seven sages or
Saptarishi The Saptarishi () are the seven rishis of ancient India who are extolled in the Vedas, and other Hindu literature. The Vedic Samhitas never enumerate these rishis by name, although later Vedic texts such as the Brahmanas and Upanisads do s ...
and their seven wives or Sapta Matrka in
Hindu mythology Hindu mythology is the body of myths and literature attributed to, and espoused by, the adherents of the Hindu religion, found in Hindu texts such as the Vedic literature, epics like ''Mahabharata'' and ''Ramayana'', the Puranas, and re ...
*Seven Chakras in eastern philosophy *Seven stars in a constellation called " Saptharishi Mandalam" in Indian astronomy *Seven promises, or Saptapadi, and seven circumambulations around a fire at Hindu weddings *Seven virgin goddesses or Saptha Kannimar worshipped in temples in
Tamil Nadu Tamil Nadu (; , TN) is a state in southern India. It is the tenth largest Indian state by area and the sixth largest by population. Its capital and largest city is Chennai. Tamil Nadu is the home of the Tamil people, whose Tamil language ...
,
India India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the so ...
*Seven hills at Tirumala known as Yedu Kondalavadu in Telugu, or ezhu malaiyan in
Tamil Tamil may refer to: * Tamils, an ethnic group native to India and some other parts of Asia **Sri Lankan Tamils, Tamil people native to Sri Lanka also called ilankai tamils ** Tamil Malaysians, Tamil people native to Malaysia * Tamil language, nat ...
, meaning "Sevenhills God" *Seven steps taken by the
Buddha Siddhartha Gautama, most commonly referred to as the Buddha, was a wandering ascetic and religious teacher who lived in South Asia during the 6th or 5th century BCE and founded Buddhism. According to Buddhist tradition, he was born in Lu ...
at birth *Seven divine ancestresses of humankind in Khasi mythology *Seven octets or Saptak
Swaras Svara or swara (Devanagari: स्वर, generally pronounced as ''swar'') is a Sanskrit word that connotes simultaneously a breath, a vowel, the sound of a musical note corresponding to its name, and the successive steps of the octave or '' ...
in Indian Music as the basis for Ragas compositions *
Seven Social Sins Seven Social Sins is a list that Mohandas Karamchand Gandhi published in his weekly newspaper '' Young India'' on October 22, 1925. Later he gave this same list to his grandson, Arun Gandhi, written on a piece of paper on their final day together s ...
listed by
Mahatma Gandhi Mohandas Karamchand Gandhi (; ; 2 October 1869 – 30 January 1948), popularly known as Mahatma Gandhi, was an Indian lawyer, anti-colonial nationalist Quote: "... marks Gandhi as a hybrid cosmopolitan figure who transformed ... anti- ...

Other references to the number seven in Eastern traditions include: *
Seven Lucky Gods In Japanese mythology, the Seven Lucky Gods or Seven Gods of Fortune (, shichifukujin in Japanese) are believed to grant good luck and are often represented in netsuke and in artworks. One of the seven (Jurōjin) is said to be based on a histori ...
or gods of good fortune in
Japanese mythology Japanese mythology is a collection of traditional stories, folktales, and beliefs that emerged in the islands of the Japanese archipelago. Shinto and Buddhist traditions are the cornerstones of Japanese mythology. The history of thousands of year ...
* Seven-Branched Sword in Japanese mythology * Seven Sages of the Bamboo Grove in China *Seven minor symbols of yang in Taoist yin-yang

## Other references

Other references to the number seven in traditions from around the world include: *Seven palms in an Egyptian '' Sacred Cubit'' *Seven ranks in
Mithraism Mithraism, also known as the Mithraic mysteries or the Cult of Mithras, was a Roman mystery religion centered on the god Mithras. Although inspired by Iranian worship of the Zoroastrian divinity (''yazata'') Mithra, the Roman Mithras is linke ...
* Seven hills of Istanbul *Seven islands of
Atlantis Atlantis ( grc, Ἀτλαντὶς νῆσος, , island of Atlas) is a fictional island mentioned in an allegory on the hubris of nations in Plato's works '' Timaeus'' and ''Critias'', wherein it represents the antagonist naval power that be ...
*Seven
Cherokee The Cherokee (; chr, ᎠᏂᏴᏫᏯᎢ, translit=Aniyvwiyaʔi or Anigiduwagi, or chr, ᏣᎳᎩ, links=no, translit=Tsalagi) are one of the indigenous peoples of the Southeastern Woodlands of the United States. Prior to the 18th century, th ...
clans *Seven lives of cats in
Iran Iran, officially the Islamic Republic of Iran, and also called Persia, is a country located in Western Asia. It is bordered by Iraq and Turkey to the west, by Azerbaijan and Armenia to the northwest, by the Caspian Sea and Tur ...
and
German German(s) may refer to: * Germany (of or related to) **Germania (historical use) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizens of Germany, see also German nationality law **Ge ...
and Romance language-speaking cultures *Seven fingers on each hand, seven toes on each foot and seven pupils in each eye of the Irish epic hero Cúchulainn *Seventh sons will be werewolves in Galician folklore, or the son of a woman and a werewolf in other European folklores * Seventh sons of a seventh son will be magicians with special powers of healing and clairvoyance in some cultures, or vampires in others *Seven prominent legendary monsters in
Guaraní mythology The Tupi-Guarani mythology is the set of narratives about the gods and spirits of the different Tupi-Guarani peoples, ancient and current. Together with the cosmogonies, anthropogonies and rituals, they form part of the religion of these peoples ...
*Seven gateways traversed by
Inanna Inanna, also sux, 𒀭𒊩𒌆𒀭𒈾, nin-an-na, label=none is an ancient Mesopotamian goddess of love, war, and fertility. She is also associated with beauty, sex, divine justice, and political power. She was originally worshiped in Su ...
during her descent into the
underworld The underworld, also known as the netherworld or hell, is the supernatural world of the dead in various religious traditions and myths, located below the world of the living. Chthonic is the technical adjective for things of the underworld. ...
*''
Seven Wise Masters The ''Seven Wise Masters'' (also called the ''Seven Sages'' or ''Seven Wise Men'') is a cycle of stories of Sanskrit, Persian or Hebrew origins. Story and plot The Sultan sends his son, the young Prince, to be educated away from the court in ...
'', a cycle of medieval stories *Seven sister
goddess A goddess is a female deity. In many known cultures, goddesses are often linked with literal or metaphorical pregnancy or imagined feminine roles associated with how women and girls are perceived or expected to behave. This includes themes of ...
es or fates in
Baltic mythology Baltic mythology is the body of mythology of the Baltic people stemming from Baltic paganism and continuing after Christianization and into Baltic folklore. Baltic mythology ultimately stems from Proto-Indo-European mythology. The Baltic region w ...
called the Deivės Valdytojos. *Seven legendary Cities of Gold, such as Cibola, that the Spanish thought existed in South America *Seven years spent by Thomas the Rhymer in the faerie kingdom in the eponymous British folk tale *Seven-year cycle in which the Queen of the Fairies pays a tithe to
Hell In religion and folklore, hell is a location in the afterlife in which evil souls are subjected to punitive suffering, most often through torture, as eternal punishment after death. Religions with a linear divine history often depict hells ...
(or possibly Hel) in the tale of Tam Lin *'' Seven Valleys'', a text by the Prophet-Founder Bahá'u'lláh in the Bahá'í faith *Seven superuniverses in the cosmology of Urantia *Seven psychological types called the Seven Rays in the teachings of Alice A. Bailey *The sacred number of YemayaYemaya
Santeria Church of the Orishas. Retrieved 25 November 2022

# In culture

## In literature

* Seven Dwarfs * Seven features prominently in ''
A Song of Ice and Fire ''A Song of Ice and Fire'' is a series of epic fantasy novels by the American novelist and screenwriter George R. R. Martin. He began the first volume of the series, ''A Game of Thrones'', in 1991, and it was published in 1996. Martin, who in ...
'' by George R. R. Martin, namely, the Seven Kingdoms and the Faith of the Seven

## In sports

* Sports with seven players per side **
Kabaddi Kabaddi is a contact team sport. Played between two teams of seven players, the objective of the game is for a single player on offence, referred to as a "raider", to run into the opposing team's half of the court, touch out as many of their ...
** Rugby sevens **
Water Polo Water polo is a competitive team sport played in water between two teams of seven players each. The game consists of four quarters in which the teams attempt to score goals by throwing the ball into the opposing team's goal. The team with the ...
**
Netball Netball is a ball sport played on a court by two teams of seven players. It is among a rare number of sports which have been created exclusively for female competitors. The sport is played on indoor and outdoor netball courts and is specifical ...
**
Handball Handball (also known as team handball, European handball or Olympic handball) is a team sport in which two teams of seven players each (six outcourt players and a goalkeeper) pass a ball using their hands with the aim of throwing it into the g ...
**
Flag Football Flag football is a variant of American football where, instead of tackling players to the ground, the defensive team must remove a flag or flag belt from the ball carrier ("deflagging") to end a down. The sport has a strong amateur following a ...
**
Ultimate Frisbee Ultimate, originally known as ultimate Frisbee, is a non-contact team sport played with a frisbee flung by hand. Ultimate was developed in 1968 by AJ Gator in Maplewood, New Jersey. Although ultimate resembles many traditional sports in its ath ...
* Seven is the least number of players a soccer team must have on the field in order for a match to start and continue. * A
touchdown A touchdown (abbreviated as TD) is a scoring play in gridiron football. Whether running, passing, returning a kickoff or punt, or recovering a turnover, a team scores a touchdown by advancing the ball into the opponent's end zone. In Ame ...
plus an extra point is worth seven points.

*
Diatonic scale In music theory, a diatonic scale is any heptatonic scale that includes five whole steps (whole tones) and two half steps (semitones) in each octave, in which the two half steps are separated from each other by either two or three whole ste ...
(7 notes) * Seven colors in the rainbow * Seven continents * Seven liberal arts * Seven Wonders of the Ancient World *Seven days of the Week * Septenary (numeral system) * Year Seven (School) * Se7en (disambiguation) * Sevens (disambiguation) * One-seventh area triangle * Z with stroke (Ƶ) *
List of highways numbered 7 The following highways are numbered 7. For roads numbered A7, see list of A7 roads. Route 7, or Highway 7, may refer to: International * AH7, Asian Highway 7 * European route E07 * European route E007 Afghanistan *Kunduz-Khomri Highway (A7) ...

# References

*Wells, D. ''
The Penguin Dictionary of Curious and Interesting Numbers ''The Penguin Dictionary of Curious and Interesting Numbers'' is a reference book for recreational mathematics and elementary number theory written by David Wells. The first edition was published in paperback by Penguin Books in 1986 in the UK ...
'' London:
Penguin Group Penguin Group is a British trade book publisher and part of Penguin Random House, which is owned by the German media conglomerate Bertelsmann. The new company was created by a merger that was finalised on 1 July 2013, with Bertelsmann initiall ...
(1987): 70–71 {{DEFAULTSORT:7 (Number) Integers 7 (number)