A symbol is a mark, sign, or
word
A word is a basic element of language that carries an semantics, objective or pragmatics, practical semantics, meaning, can be used on its own, and is uninterruptible. Despite the fact that language speakers often have an intuitive grasp of w ...
that indicates, signifies, or is understood as representing an
idea
In common usage and in philosophy, ideas are the results of thought. Also in philosophy, ideas can also be mental representational images of some object. Many philosophers have considered ideas to be a fundamental ontological category of being ...
,
object
Object may refer to:
General meanings
* Object (philosophy), a thing, being, or concept
** Object (abstract), an object which does not exist at any particular time or place
** Physical object, an identifiable collection of matter
* Goal, an ai ...
, or
relationship. Symbols allow people to go beyond what is
known
Knowledge can be defined as awareness of facts or as practical skills, and may also refer to familiarity with objects or situations. Knowledge of facts, also called propositional knowledge, is often defined as true belief that is distinc ...
or seen by creating linkages between otherwise very different
concept
Concepts are defined as abstract ideas. They are understood to be the fundamental building blocks of the concept behind principles, thoughts and beliefs.
They play an important role in all aspects of cognition. As such, concepts are studied by s ...
s and
experience
Experience refers to conscious events in general, more specifically to perceptions, or to the practical knowledge and familiarity that is produced by these conscious processes. Understood as a conscious event in the widest sense, experience involv ...
s. All
communication
Communication (from la, communicare, meaning "to share" or "to be in relation with") is usually defined as the transmission of information. The term may also refer to the message communicated through such transmissions or the field of inquir ...
(and
data processing
Data processing is the collection and manipulation of digital data to produce meaningful information.
Data processing is a form of ''information processing'', which is the modification (processing) of information in any manner detectable by an ...
) is achieved through the use of symbols. Symbols take the form of words, sounds,
gesture
A gesture is a form of non-verbal communication or non-vocal communication in which visible bodily actions communicate particular messages, either in place of, or in conjunction with, speech. Gestures include movement of the hands, face, or ot ...
s, ideas, or visual
image
An image is a visual representation of something. It can be two-dimensional, three-dimensional, or somehow otherwise feed into the visual system to convey information. An image can be an artifact, such as a photograph or other two-dimensiona ...
s and are used to convey other ideas and beliefs. For example, a red octagon is a common symbol for "STOP"; on
map
A map is a symbolic depiction emphasizing relationships between elements of some space, such as objects, regions, or themes.
Many maps are static, fixed to paper or some other durable medium, while others are dynamic or interactive. Although ...
s, blue lines often represent rivers; and a red
rose
A rose is either a woody perennial flowering plant of the genus ''Rosa'' (), in the family Rosaceae (), or the flower it bears. There are over three hundred species and tens of thousands of cultivars. They form a group of plants that can be ...
often symbolizes love and compassion.
Numerals
A numeral is a figure, symbol, or group of figures or symbols denoting a number. It may refer to:
* Numeral system used in mathematics
* Numeral (linguistics), a part of speech denoting numbers (e.g. ''one'' and ''first'' in English)
* Numerical d ...
are symbols for
number
A number is a mathematical object used to count, measure, and label. The original examples are the natural numbers 1, 2, 3, 4, and so forth. Numbers can be represented in language with number words. More universally, individual numbers c ...
s;
letter
Letter, letters, or literature may refer to:
Characters typeface
* Letter (alphabet), a character representing one or more of the sounds used in speech; any of the symbols of an alphabet.
* Letterform, the graphic form of a letter of the alphabe ...
s of an
alphabet
An alphabet is a standardized set of basic written graphemes (called letters) that represent the phonemes of certain spoken languages. Not all writing systems represent language in this way; in a syllabary, each character represents a syll ...
may be symbols for certain
phoneme
In phonology and linguistics, a phoneme () is a unit of sound that can distinguish one word from another in a particular language.
For example, in most dialects of English, with the notable exception of the West Midlands and the north-west o ...
s; and personal
name
A name is a term used for identification by an external observer. They can identify a class or category of things, or a single thing, either uniquely, or within a given context. The entity identified by a name is called its referent. A personal ...
s are symbols representing individuals. The
variable
Variable may refer to:
* Variable (computer science), a symbolic name associated with a value and whose associated value may be changed
* Variable (mathematics), a symbol that represents a quantity in a mathematical expression, as used in many ...
'x', in a mathematical
equation
In mathematics, an equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign . The word ''equation'' and its cognates in other languages may have subtly different meanings; for example, in ...
, may symbolize the position of a particle in space.
The academic study of symbols is
semiotics
Semiotics (also called semiotic studies) is the systematic study of sign processes ( semiosis) and meaning making. Semiosis is any activity, conduct, or process that involves signs, where a sign is defined as anything that communicates something ...
. In
cartography
Cartography (; from grc, χάρτης , "papyrus, sheet of paper, map"; and , "write") is the study and practice of making and using maps. Combining science, aesthetics and technique, cartography builds on the premise that reality (or an im ...
, an organized collection of symbols forms a
legend
A legend is a Folklore genre, genre of folklore that consists of a narrative featuring human actions, believed or perceived, both by teller and listeners, to have taken place in human history. Narratives in this genre may demonstrate human valu ...
for a map.
Etymology
The word ''symbol'' derives from the late Middle French masculine noun ''symbole'', which appeared around 1380 in a theological sense signifying a formula used in the Roman Catholic Church as a sort of synonym for 'the credo'; by extension in the early Renaissance it came to mean 'a maxim' or 'the external sign of a sacrament'; these meanings were lost in secular contexts. It was during the Renaissance in the mid-16th century that the word took on the meaning that is dominant today, that of 'a natural fact or object evoking by its form or its nature an association of ideas with something abstract or absent'; this appears, for example, in
François Rabelais
François Rabelais ( , , ; born between 1483 and 1494; died 1553) was a French Renaissance writer, physician, Renaissance humanist, monk and Greek scholar. He is primarily known as a writer of satire, of the grotesque, and of bawdy jokes and ...
, ''Le Quart Livre'', in 1552. This French word derives from Latin, where both the masculine noun ''symbolus'' and the neuter noun ''symbolum'' refer to "a mark or sign as a means of recognition." The Latin word derives from the
Greek
Greek may refer to:
Greece
Anything of, from, or related to Greece, a country in Southern Europe:
*Greeks, an ethnic group.
*Greek language, a branch of the Indo-European language family.
**Proto-Greek language, the assumed last common ancestor ...
σύμβολον ''symbolon'', from a verb meaning 'throw together, put together, compare,' alluding to the Classical practice of breaking a piece of ceramic in two and giving one half to the person who would receive a future message, and one half to the person who would send it: when the two fit perfectly together, the receiver could be sure that the messenger bearing it did indeed also carry a genuine message from the intended person. A literary or artistic symbol as an "outward sign" of something else is a metaphorical extension of this notion of a message from a sender to a recipient. In English, the meaning "something which stands for something else" was first recorded in 1590, in
Edmund Spenser
Edmund Spenser (; 1552/1553 – 13 January 1599) was an English poet best known for ''The Faerie Queene'', an epic poem and fantastical allegory celebrating the Tudor dynasty and Elizabeth I. He is recognized as one of the premier craftsmen of ...
's ''
Faerie Queene
''The Faerie Queene'' is an English epic poem by Edmund Spenser. Books IIII were first published in 1590, then republished in 1596 together with books IVVI. ''The Faerie Queene'' is notable for its form: at over 36,000 lines and over 4,000 sta ...
''.
Concepts and definitions
Symbols are a means of complex communication that often can have multiple levels of meaning.
[Womack, Mari. Symbols and Meaning: A Concise Introduction. California: AltaMira Press, 2005.] Symbols are the basis of all human understanding and serve as vehicles of conception for all human knowledge. Symbols facilitate understanding of the world in which we live, thus serving as the grounds upon which we make judgments.
[Palczewski, Catherine, and Ice, Richard, and Fritch, John. Rhetoric in Civic Life. Pennsylvania: Strata Publishing, Inc., 2012.] In this way, people use symbols not only to make sense of the world around them, but also to
identify and cooperate in society through
constitutive rhetoric Constitutive rhetoric is a theory of discourse devised by James Boyd White about the capacity of language or symbols to create a collective identity for an audience, especially by means of condensation symbols, literature, and narratives. Such ...
.
Human cultures use symbols to express specific ideologies and social structures and to represent aspects of their specific culture. Thus, symbols carry meanings that depend upon one's cultural background. As a result, the meaning of a symbol is not inherent in the symbol itself but is culturally learned.
Heinrich Zimmer
Heinrich Robert Zimmer (6 December 1890 – 20 March 1943) was a German Indologist and linguist, as well as a historian of South Asian art, most known for his works, ''Myths and Symbols in Indian Art and Civilization'' and ''Philosophies of India ...
gives a concise overview of the nature, and perennial relevance, of symbols.
In the book ''Signs and Symbols'', it is stated that
Symbols and semiotics
Semiotics
Semiotics (also called semiotic studies) is the systematic study of sign processes ( semiosis) and meaning making. Semiosis is any activity, conduct, or process that involves signs, where a sign is defined as anything that communicates something ...
is the study of signs, symbols, and signification as communicative behavior. Semiotics studies focus on the relationship of the signifier and the signified, also taking into account the interpretation of visual cues, body language, sound, and other contextual clues. Semiotics is linked with
linguistics
Linguistics is the scientific study of human language. It is called a scientific study because it entails a comprehensive, systematic, objective, and precise analysis of all aspects of language, particularly its nature and structure. Linguis ...
and psychology. Semioticians not only study what a symbol implies but also how it got its meaning and how it functions to make meaning in society. Symbols allow the human brain continuously to create meaning using sensory input and decode symbols through both
denotation
In linguistics and philosophy, the denotation of an expression is its literal meaning. For instance, the English word "warm" denotes the property of being warm. Denotation is contrasted with other aspects of meaning including connotation. For inst ...
and
connotation
A connotation is a commonly understood cultural or emotional association that any given word or phrase carries, in addition to its explicit or literal meaning, which is its denotation.
A connotation is frequently described as either positive o ...
.
Psychoanalysis, rhetoric, and archetypes
An alternative definition of ''symbol'', distinguishing it from the term ''
sign
A sign is an object, quality, event, or entity whose presence or occurrence indicates the probable presence or occurrence of something else. A natural sign bears a causal relation to its object—for instance, thunder is a sign of storm, or me ...
'' was proposed by Swiss psychoanalyst
Carl Jung
Carl Gustav Jung ( ; ; 26 July 1875 – 6 June 1961) was a Swiss psychiatrist and psychoanalyst who founded analytical psychology. Jung's work has been influential in the fields of psychiatry, anthropology, archaeology, literature, philo ...
. In his studies on what is now called
Jungian archetypes
Jungian archetypes are a concept from psychology that refers to a universal, inherited idea, pattern of thought, or image that is present in the collective unconscious of all human beings. The psychic counterpart of instinct, archetypes are thoug ...
, a sign stands for something known, as a word stands for its referent. He contrasted a sign with a ''symbol'': something that is unknown and that cannot be made clear or precise. An example of a symbol in this sense is
Christ
Jesus, likely from he, יֵשׁוּעַ, translit=Yēšūaʿ, label=Hebrew/Aramaic ( AD 30 or 33), also referred to as Jesus Christ or Jesus of Nazareth (among other Names and titles of Jesus in the New Testament, names and titles), was ...
as a symbol of the
archetype
The concept of an archetype (; ) appears in areas relating to behavior, historical psychology, and literary analysis.
An archetype can be any of the following:
# a statement, pattern of behavior, prototype, "first" form, or a main model that ot ...
called ''
self
The self is an individual as the object of that individual’s own reflective consciousness. Since the ''self'' is a reference by a subject to the same subject, this reference is necessarily subjective. The sense of having a self—or ''selfhood ...
''.
Kenneth Burke
Kenneth Duva Burke (May 5, 1897 – November 19, 1993) was an American literary theorist, as well as poet, essayist, and novelist, who wrote on 20th-century philosophy, aesthetics, criticism, and rhetorical theory. As a literary theorist, Burke ...
described ''
Homo sapiens
Humans (''Homo sapiens'') are the most abundant and widespread species of primate, characterized by bipedalism and exceptional cognitive skills due to a large and complex brain. This has enabled the development of advanced tools, culture, ...
'' as a "
symbol-using, symbol making, and symbol misusing animal" to suggest that a person creates symbols as well as misuses them. One example he uses to indicate what he means by the misuse of symbol is the story of a man who, when told that a particular food item was whale blubber, could barely keep from throwing it up. Later, his friend discovered it was actually just a dumpling. But the man's reaction was a direct consequence of the symbol of "blubber" representing something inedible in his mind. In addition, the symbol of "blubber" was created by the man through various kinds of
learning
Learning is the process of acquiring new understanding, knowledge, behaviors, skills, value (personal and cultural), values, attitudes, and preferences. The ability to learn is possessed by humans, animals, and some machine learning, machines ...
.
Burke goes on to describe symbols as also being derived from
Sigmund Freud
Sigmund Freud ( , ; born Sigismund Schlomo Freud; 6 May 1856 – 23 September 1939) was an Austrian neurologist and the founder of psychoanalysis, a clinical method for evaluating and treating psychopathology, pathologies explained as originatin ...
's work on
condensation
Condensation is the change of the state of matter from the gas phase into the liquid phase, and is the reverse of vaporization. The word most often refers to the water cycle. It can also be defined as the change in the state of water vapor to ...
and
displacement
Displacement may refer to:
Physical sciences
Mathematics and Physics
*Displacement (geometry), is the difference between the final and initial position of a point trajectory (for instance, the center of mass of a moving object). The actual path ...
, further stating that symbols are not just relevant to the
theory of dreams but also to "normal symbol systems". He says they are related through "substitution", where one word, phrase, or symbol is substituted for another in order to change the meaning. In other words, if one person does not understand a certain word or phrase, another person may substitute a
synonym
A synonym is a word, morpheme, or phrase that means exactly or nearly the same as another word, morpheme, or phrase in a given language. For example, in the English language, the words ''begin'', ''start'', ''commence'', and ''initiate'' are all ...
or symbol in order to get the meaning across. However, upon learning the new way of interpreting a specific symbol, the person may change his or her already-formed ideas to incorporate the new information.
Jean Dalby Clift
Jean Dalby Clift was an American priest of the Episcopal Church and a pastoral counselor in private practice. She was the author of books in the fields of psychology and spirituality. "Dr. Clift has had many roles in her life, including lawyer, ...
says that people not only add their own interpretations to symbols, they also create personal symbols that represent their own understanding of their lives: what she calls "core images" of the person. Clift argues that symbolic work with these personal symbols or core images can be as useful as working with dream symbols in psychoanalysis or counseling.
William Indick suggests that the symbols that are commonly found in myth, legend, and fantasy fulfill psychological functions and hence are why archetypes such as "the hero," "the princess" and "the witch" have remained popular for centuries.
Symbolic value
Symbols can carry symbolic value in three primary forms: Ideological, comparative, and isomorphic.
Ideological symbols such as religious and state symbols convey complex sets of beliefs and ideas that indicate "the right thing to do". Comparative symbols such as prestigious office addresses, fine art, and prominent awards indicate answers to questions of "better or worse" and "superior or inferior". Isomorphic symbols blend in with the surrounding cultural environment such that they enable individuals and organizations to conform to their surroundings and evade social and political scrutiny. Examples of symbols with isomorphic value include wearing a professional dress during business meetings, shaking hands to greet others in the West, or
bowing
Bowing (also called stooping) is the act of lowering the torso and head as a social gesture in direction to another person or symbol. It is most prominent in Asian cultures but it is also typical of nobility and aristocracy in many European coun ...
to greet others in the East. A single symbol can carry multiple distinct meanings such that it provides multiple types of symbolic value.
Paul Tillich
Paul Tillich
Paul Johannes Tillich (August 20, 1886 – October 22, 1965) was a German-American Christian existentialist philosopher, religious socialist, and Lutheran Protestant theologian who is widely regarded as one of the most influential theologi ...
argued that, while signs are invented and forgotten, symbols are born and die. There are, therefore, dead and living symbols. A living symbol can reveal to an individual hidden levels of meaning and transcendent or religious realities. For Tillich a symbol always "points beyond itself" to something that is unquantifiable and mysterious; symbols open up the "depth dimension of reality itself". Symbols are complex, and their meanings can evolve as the individual or culture evolves. When a symbol loses its meaning and power for an individual or culture, it becomes a dead symbol.
When a symbol becomes identified with the deeper reality to which it refers, it becomes idolatrous as the "symbol is taken for reality." The symbol itself is substituted for the deeper meaning it intends to convey. The unique nature of a symbol is that it gives access to deeper layers of reality which are otherwise inaccessible.
Role of context in symbolism
A symbol's
meaning may be modified by various factors including popular usage,
history
History (derived ) is the systematic study and the documentation of the human activity. The time period of event before the History of writing#Inventions of writing, invention of writing systems is considered prehistory. "History" is an umbr ...
, and contextual
intent
Intentions are mental states in which the agent commits themselves to a course of action. Having the plan to visit the zoo tomorrow is an example of an intention. The action plan is the ''content'' of the intention while the commitment is the ''a ...
.
Historical meaning
The history of a symbol is one of many factors in determining a particular symbol's apparent meaning. Consequently, symbols with emotive power carry problems analogous to
false etymologies
A false etymology (fake etymology, popular etymology, etymythology, pseudo-etymology, or par(a)etymology) is a popular but false belief about the origin or derivation of a specific word. It is sometimes called a folk etymology, but this is also a ...
.
Context
The context of a symbol may change its meaning. Similar five-pointed stars might signify a
law enforcement
Law enforcement is the activity of some members of government who act in an organized manner to enforce the law by discovering, deterring, rehabilitating, or punishing people who violate the rules and norms governing that society. The term en ...
officer or a member of the
armed services
A military, also known collectively as armed forces, is a heavily armed, highly organized force primarily intended for warfare. It is typically authorized and maintained by a sovereign state, with its members identifiable by their distinct ...
, depending upon the
uniform
A uniform is a variety of clothing worn by members of an organization while participating in that organization's activity. Modern uniforms are most often worn by armed forces and paramilitary organizations such as police, emergency services, se ...
.
Symbols in cartography
Symbols are used in cartography to communicate geographical information (generally as point, line, or area features). As with other symbols, visual variables such as size, shape, orientation, texture, and pattern provide meaning to the symbol. According to
semiotics
Semiotics (also called semiotic studies) is the systematic study of sign processes ( semiosis) and meaning making. Semiosis is any activity, conduct, or process that involves signs, where a sign is defined as anything that communicates something ...
, map symbols are "read" by map users when they make a connection between the graphic mark on the map (the ''sign''), a general concept (the ''interpretant''), and a particular feature of the real world (the ''referent''). Map symbols can thus be categorized by how they suggest this connection:
* Pictorial symbols (also "image", "iconic", or "replicative") appear as the real-world feature, although it is often in a generalized manner; e.g. a tree icon to represent a forest, or green denoting vegetation.
* Functional symbols (also "representational") directly represent the activity that takes place at the represented feature; e.g. a picture of a skier to represent a ski resort or a tent to represent a campground.
* Conceptual symbols directly represent a concept related to the represented feature; e.g. a dollar sign to represent an ATM, or a
Star of David
The Star of David (). is a generally recognized symbol of both Jewish identity and Judaism. Its shape is that of a hexagram: the compound of two equilateral triangles.
A derivation of the ''seal of Solomon'', which was used for decorative ...
to represent a Jewish synagogue.
* Conventional symbols (also "associative") do not have any intuitive relationship but are so commonly used that map readers eventually learn to recognize them; e.g. a red line to represent a highway or a cross to represent a hospital.
*Abstract/geometric symbols (also "adhHoc") are arbitrary shapes chosen by the cartographer to represent a certain feature.
Related terms
A symbolic action is an action that symbolizes or signals what the actor wants or believes. The action conveys meaning to the viewers. Symbolic action may overlap with
symbolic speech Symbolic speech is a legal term in United States law used to describe actions that purposefully and discernibly convey a particular message or statement to those viewing it. Symbolic speech is recognized as being protected under the First Amendment ...
, such as the use of
flag burning
Flag desecration is the desecration of a flag, violation of flag protocol, or various acts that intentionally destroy, damage, or mutilate a flag in public. In the case of a national flag, such action is often intended to make a political point ...
to express hostility or saluting the flag to express patriotism.
[Bagossy, Renate. ]
The Difficulty of the Amendment Process of the Constitution of the United States of America and Freedom of Speech and its limits
'. GRIN Verlag; 2008-08-11 ited 5 November 2012 . p. 16–17. In response to intense public criticism, businesses, organizations, and governments may take symbolic actions rather than, or in addition to, directly addressing the identified problems.
[Bednar, Michael Kay. ]
How Symbolic Action Affects the Media as a Governance Mechanism
'. ProQuest; 2008. . p. 17.
See also
*
Alchemical symbol
Alchemical symbols, originally devised as part of alchemy, were used to denote some elements and some compounds until the 18th century. Although notation like this was mostly standardized, style and symbol varied between alchemists, so this pag ...
*
Astrological symbols
Historically, astrological and astronomical symbols overlapped. Frequently used symbols include signs of the zodiac and classical planets. These originate from medieval Byzantine codices. Their current form is a product of the European Renaissan ...
*
Astronomical symbols
Astronomical symbols are abstract pictorial symbols used to represent astronomical objects, theoretical constructs and observational events in European astronomy. The earliest forms of these symbols appear in Greek papyrus texts of late ant ...
*
Emblem
An emblem is an abstract or representational pictorial image that represents a concept, like a moral truth, or an allegory, or a person, like a king or saint.
Emblems vs. symbols
Although the words ''emblem'' and '' symbol'' are often use ...
*
Icon
An icon () is a religious work of art, most commonly a painting, in the cultures of the Eastern Orthodox, Oriental Orthodox, and Catholic churches. They are not simply artworks; "an icon is a sacred image used in religious devotion". The most ...
(religious) and
secular icon
A cultural icon is a person or an artifact that is identified by members of a culture as representative of that culture. The process of identification is subjective, and "icons" are judged by the extent to which they can be seen as an authentic ...
*
List of symbols
Many (but not all) graphemes that are part of a writing system that encodes a full spoken language are included in the Unicode standard, which also includes graphical symbols. See:
* Language code
* List of Unicode characters
* List of writing s ...
*
Logo
A logo (abbreviation of logotype; ) is a graphic mark, emblem, or symbol used to aid and promote public identification and recognition. It may be of an abstract or figurative design or include the text of the name it represents as in a wordma ...
*
National symbol
A national symbol is a symbol of any entity considering and manifesting itself to the world as a national community: the sovereign states but also nations and countries in a state of colonial or other dependence, federal integration, or even an ...
*
National treasure
The idea of national treasure, like national epics and national anthems, is part of the language of romantic nationalism, which arose in the late 18th century and 19th centuries. Nationalism is an ideology that supports the nation as the fundame ...
*
Pictogram
A pictogram, also called a pictogramme, pictograph, or simply picto, and in computer usage an icon, is a graphic symbol that conveys its meaning through its pictorial resemblance to a physical object. Pictographs are often used in writing and ...
*
Proto-writing
Proto-writing consists of visible marks communicating limited information. Such systems emerged from earlier traditions of symbol systems in the early Neolithic, as early as the 7th millennium BC in Eastern Europe and China. They used ideograph ...
*
Sign
A sign is an object, quality, event, or entity whose presence or occurrence indicates the probable presence or occurrence of something else. A natural sign bears a causal relation to its object—for instance, thunder is a sign of storm, or me ...
*
Symbolic interactionism
Symbolic interactionism is a sociological theory that develops from practical considerations and alludes to particular effects of communication and interaction in people to make images and normal implications, for deduction and correspondence w ...
*
Symbolism (arts)
Symbolism was a late 19th-century art movement of French art, French and Art of Belgium, Belgian origin in poetry and other arts seeking to represent absolute truths symbolically through language and metaphorical images, mainly as a reaction aga ...
*
Table of mathematical symbols
A mathematical symbol is a figure or a combination of figures that is used to represent a mathematical object, an action on mathematical objects, a relation between mathematical objects, or for structuring the other symbols that occur in a formula. ...
*
Traffic sign
Traffic signs or road signs are signs erected at the side of or above roads to give instructions or provide information to road users. The earliest signs were simple wooden or stone milestones. Later, signs with directional arms were introduce ...
s
*
Unicode symbols
In computing, a Unicode symbol is a Unicode character which is not part of a script used to write a natural language, but is nonetheless available for use as part of a text.
Many of the symbols are drawn from existing character sets or ISO/IEC or ...
*
Universal language
Universal language may refer to a hypothetical or historical language spoken and understood by all or most of the world's people. In some contexts, it refers to a means of communication said to be understood by all humans. It may be the idea of ...
References
{{Authority control
Concepts
Notation
Semiotics
Syntactic entities