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Karl Hessenberg
Karl Adolf Hessenberg (September 8, 1904 – February 22, 1959) was a German mathematician and engineer. The Hessenberg matrix form is named after him. Education From 1925 to 1930 he studied electrical engineering at the Technische Hochschule Darmstadt (today Technische Universität Darmstadt) and graduated with a diploma. From 1931 to 1932 he was an assistant to Alwin Walther at the Technische Hochschule Darmstadt, afterwards he worked at the power station in Worms, Germany. From 1936 he worked as an engineer at AEG, first in Berlin and later in Frankfurt. In 1940 he received his PhD from Alwin Walther at the Technische Hochschule in Darmstadt. Family Hessenberg was also the brother of composer Kurt Hessenberg, and the great-grandson of doctor and author Heinrich Hoffmann. The Hessenberg sum and product of ordinals are named after Gerhard Hessenberg Gerhard Hessenberg (16 August 1874 – 16 November 1925) was a German mathematician who worked in projective geometry, d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mathematician
A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems. Mathematicians are concerned with numbers, data, quantity, structure, space, models, and change. History One of the earliest known mathematicians were Thales of Miletus (c. 624–c.546 BC); he has been hailed as the first true mathematician and the first known individual to whom a mathematical discovery has been attributed. He is credited with the first use of deductive reasoning applied to geometry, by deriving four corollaries to Thales' Theorem. The number of known mathematicians grew when Pythagoras of Samos (c. 582–c. 507 BC) established the Pythagorean School, whose doctrine it was that mathematics ruled the universe and whose motto was "All is number". It was the Pythagoreans who coined the term "mathematics", and with whom the study of mathematics for its own sake begins. The first woman mathematician recorded by history was Hypati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heinrich Hoffmann (author)
Heinrich Hoffmann (June 13, 1809 – September 20, 1894) was a German psychiatrist, who also wrote some short works including ''Der Struwwelpeter'', an illustrated book portraying children misbehaving. Early life and education Hoffmann was born in Frankfurt on Main to an architect father, Philipp Hoffmann, who was responsible for the city's streets and waterways. Hoffmann's mother died when he was a baby. His father later married his mother's sister, Antoinette Lausberg, who was a loving and more than adequate mother to him. Lazy and easily distracted, Hoffmann at first struggled at school, but became a successful student after conforming to the strict discipline imposed by his demanding father. At university in Heidelberg, he immersed himself into the corps student culture. His zest for dueling was small, but owing to his sociability, good humour and wit, Hoffmann soon became the center of many social circles, a pattern that would later repeat itself in his hometown. His progres ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Numerical Analysts
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Numerical may refer to: * Number * Numerical digit * Numerical analysis Numerical analysis is the study of algorithms that use numerical approximation (as opposed to symbolic computation, symbolic manipulations) for the problems of mathematical analysis (as distinguished from discrete mathematics). It is the study of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1959 Deaths
Events January * January 1 - Cuba: Fulgencio Batista flees Havana when the forces of Fidel Castro advance. * January 2 - Lunar probe Luna 1 was the first man-made object to attain escape velocity from Earth. It reached the vicinity of Earth's Moon, and was also the first spacecraft to be placed in heliocentric orbit. * January 3 ** The three southernmost atolls of the Maldive Islands, Maldive archipelago (Addu Atoll, Huvadhu Atoll and Fuvahmulah island) United Suvadive Republic, declare independence. ** Alaska is admitted as the 49th U.S. state. * January 4 ** In Cuba, rebel troops led by Che Guevara and Camilo Cienfuegos enter the city of Havana. ** Léopoldville riots: At least 49 people are killed during clashes between the police and participants of a meeting of the ABAKO Party in Kinshasa, Léopoldville in the Belgian Congo. * January 6 ** Fidel Castro arrives in Havana. ** The International Maritime Organization is inaugurated. * January 7 – The United States reco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1904 Births
Nineteen or 19 may refer to: * 19 (number), the natural number following 18 and preceding 20 * one of the years 19 BC, AD 19, 1919, 2019 Films * ''19'' (film), a 2001 Japanese film * ''Nineteen'' (film), a 1987 science fiction film Music * 19 (band), a Japanese pop music duo Albums * ''19'' (Adele album), 2008 * ''19'', a 2003 album by Alsou * ''19'', a 2006 album by Evan Yo * ''19'', a 2018 album by MHD * ''19'', one half of the double album ''63/19'' by Kool A.D. * ''Number Nineteen'', a 1971 album by American jazz pianist Mal Waldron * ''XIX'' (EP), a 2019 EP by 1the9 Songs * "19" (song), a 1985 song by British musician Paul Hardcastle. * "Nineteen", a song by Bad4Good from the 1992 album '' Refugee'' * "Nineteen", a song by Karma to Burn from the 2001 album ''Almost Heathen''. * "Nineteen" (song), a 2007 song by American singer Billy Ray Cyrus. * "Nineteen", a song by Tegan and Sara from the 2007 album '' The Con''. * "XIX" (song), a 2014 song by Slipk ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gerhard Hessenberg
Gerhard Hessenberg (16 August 1874 – 16 November 1925) was a German mathematician who worked in projective geometry, differential geometry, and set theory. Career Hessenberg received his Ph.D. from the University of Berlin in 1899 under the guidance of Hermann Schwarz and Lazarus Fuchs. His name is usually associated with projective geometry, where he is known for proving that Desargues' theorem is a consequence of Pappus's hexagon theorem, and differential geometry where he is known for introducing the concept of a connection. He was also a set theorist: the Hessenberg sum and product of ordinals are named after him. However, Hessenberg matrices are named for Karl Hessenberg, a near relative. In 1908 Gerhard Hessenberg was an Invited Speaker of the International Congress of Mathematicians The International Congress of Mathematicians (ICM) is the largest conference for the topic of mathematics. It meets once every four years, hosted by the International Mathematical Un ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ordinal Arithmetic
In the mathematical field of set theory, ordinal arithmetic describes the three usual operations on ordinal numbers: addition, multiplication, and exponentiation. Each can be defined in essentially two different ways: either by constructing an explicit well-ordered set that represents the result of the operation or by using transfinite recursion. Cantor normal form provides a standardized way of writing ordinals. In addition to these usual ordinal operations, there are also the "natural" arithmetic of ordinals and the nimber operations. Addition The union of two disjoint well-ordered sets ''S'' and ''T'' can be well-ordered. The order-type of that union is the ordinal that results from adding the order-types of ''S'' and ''T''. If two well-ordered sets are not already disjoint, then they can be replaced by order-isomorphic disjoint sets, e.g. replace ''S'' by × ''S'' and ''T'' by × ''T''. This way, the well-ordered set ''S'' is written "to the left" of the well-ordered ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kurt Hessenberg
Kurt Hessenberg (17 August 1908 – 17 June 1994) was a German composer and professor at the Hochschule für Musik und Darstellende Kunst in Frankfurt. Life Kurt Hessenberg was born on 17 August 1908 in Frankfurt, as the fourth and last child of the lawyer Eduard Hessenberg and his wife Emma, née Kugler. Among his ancestors was Heinrich Hoffmann, whose famous children's book ''Struwwelpeter'' Hessenberg was to arrange for children's choir (op. 49) later in his life. From 1927–1931 Hessenberg studied at the Leipzig Conservatory. Among his teachers were Günter Raphael (composition) and Robert Teichmüller (piano). In 1933 Hessenberg became a teacher at the Hoch'sche Konservatorium in Frankfurt am Main, where he himself had taken his earliest music lessons. In 1940 Hessenberg received the "Nationaler Kompositionspreis" (national prize for composition), joined the NSDAP in 1942, and in 1951 he was awarded the Robert-Schumann-Prize of the city of Düsseldorf for his cantata "V ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Engineer
Engineers, as practitioners of engineering, are professionals who invent, design, analyze, build and test machines, complex systems, structures, gadgets and materials to fulfill functional objectives and requirements while considering the limitations imposed by practicality, regulation, safety and cost. "Science is knowledge based on our observed facts and tested truths arranged in an orderly system that can be validated and communicated to other people. Engineering is the creative application of scientific principles used to plan, build, direct, guide, manage, or work on systems to maintain and improve our daily lives." The word ''engineer'' (Latin ) is derived from the Latin words ("to contrive, devise") and ("cleverness"). The foundational qualifications of an engineer typically include a four-year bachelor's degree in an engineering discipline, or in some jurisdictions, a master's degree in an engineering discipline plus four to six years of peer-reviewed professiona ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doctor Of Philosophy
A Doctor of Philosophy (PhD, Ph.D., or DPhil; Latin: or ') is the most common Academic degree, degree at the highest academic level awarded following a course of study. PhDs are awarded for programs across the whole breadth of academic fields. Because it is an earned research degree, those studying for a PhD are required to produce original research that expands the boundaries of knowledge, normally in the form of a Thesis, dissertation, and defend their work before a panel of other experts in the field. The completion of a PhD is often a requirement for employment as a university professor, researcher, or scientist in many fields. Individuals who have earned a Doctor of Philosophy degree may, in many jurisdictions, use the title ''Doctor (title), Doctor'' (often abbreviated "Dr" or "Dr.") with their name, although the proper etiquette associated with this usage may also be subject to the professional ethics of their own scholarly field, culture, or society. Those who teach at ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Worms, Germany
Worms () is a city in Rhineland-Palatinate, Germany, situated on the Upper Rhine about south-southwest of Frankfurt am Main. It had about 82,000 inhabitants . A pre-Roman foundation, Worms is one of the oldest cities in northern Europe. It was the capital of the Kingdom of the Burgundians in the early fifth century, hence is the scene of the medieval legends referring to this period, notably the first part of the ''Nibelungenlied''. Worms has been a Roman Catholic bishopric since at least 614, and was an important palatinate of Charlemagne. Worms Cathedral is one of the imperial cathedrals and among the finest examples of Romanesque architecture in Germany. Worms prospered in the High Middle Ages as an imperial free city. Among more than a hundred imperial diets held at Worms, the Diet of 1521 (commonly known as ''the'' Diet of Worms) ended with the Edict of Worms, in which Martin Luther was declared a heretic. Worms is also one of the historical ShUM-cities as a cultural ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
