Gian-Carlo Rota
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Gian-Carlo Rota (April 27, 1932 – April 18, 1999) was an Italian-American
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 On ...
and philosopher. He spent most of his career at the
Massachusetts Institute of Technology The Massachusetts Institute of Technology (MIT) is a private land-grant research university in Cambridge, Massachusetts. Established in 1861, MIT has played a key role in the development of modern technology and science, and is one of the ...
, where he worked in combinatorics,
functional analysis Functional analysis is a branch of mathematical analysis, the core of which is formed by the study of vector spaces endowed with some kind of limit-related structure (e.g. inner product, norm, topology, etc.) and the linear functions defined o ...
,
probability theory Probability theory is the branch of mathematics concerned with probability. Although there are several different probability interpretations, probability theory treats the concept in a rigorous mathematical manner by expressing it through a set ...
, and
phenomenology Phenomenology may refer to: Art * Phenomenology (architecture), based on the experience of building materials and their sensory properties Philosophy * Phenomenology (philosophy), a branch of philosophy which studies subjective experiences and a ...
.


Early life and education

Rota was born in
Vigevano Vigevano (; lmo, label=Western Lombard, Avgevan) is a town and ''comune'' in the province of Pavia, Lombardy in northern Italy. A historic art town, it is also renowned for shoemaking and is one of the main centres of Lomellina, a rice-growing a ...
,
Italy Italy ( it, Italia ), officially the Italian Republic, ) or the Republic of Italy, is a country in Southern Europe. It is located in the middle of the Mediterranean Sea, and its territory largely coincides with the homonymous geographical ...
. His father, Giovanni, an architect and prominent
antifascist Anti-fascism is a political movement in opposition to fascist ideologies, groups and individuals. Beginning in European countries in the 1920s, it was at its most significant shortly before and during World War II, where the Axis powers were ...
, was the brother of the mathematician Rosetta, who was the wife of the writer
Ennio Flaiano Ennio Flaiano (5 March 1910 – 20 November 1972) was an Italian screenwriter, playwright, novelist, journalist, and drama critic. Best known for his work with Federico Fellini, Flaiano co-wrote ten screenplays with the Italian director, including ...
. Gian-Carlo's family left Italy when he was 13 years old, initially going to Switzerland. Rota attended the
Colegio Americano de Quito The Fundación Colegio Americano de Quito or Colegio Americano de Quito (American School of Quito) is a private college preparatory school in Quito, Ecuador. In 1940 it was founded by the former president of Ecuador and the president of the Organi ...
in Ecuador, and graduated with an A.B. in mathematics from
Princeton University Princeton University is a private research university in Princeton, New Jersey. Founded in 1746 in Elizabeth as the College of New Jersey, Princeton is the fourth-oldest institution of higher education in the United States and one of the ...
in 1953 after completing a senior thesis, titled "On the solubility of linear equations in
topological vector spaces In mathematics, a topological vector space (also called a linear topological space and commonly abbreviated TVS or t.v.s.) is one of the basic structures investigated in functional analysis. A topological vector space is a vector space that is als ...
", under the supervision of
William Feller William "Vilim" Feller (July 7, 1906 – January 14, 1970), born Vilibald Srećko Feller, was a Croatian- American mathematician specializing in probability theory. Early life and education Feller was born in Zagreb to Ida Oemichen-Perc, a Cro ...
. He then pursued graduate studies at
Yale University Yale University is a Private university, private research university in New Haven, Connecticut. Established in 1701 as the Collegiate School, it is the List of Colonial Colleges, third-oldest institution of higher education in the United Sta ...
, where he received a
Ph.D. A Doctor of Philosophy (PhD, Ph.D., or DPhil; Latin: or ') is the most common 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 ...
in mathematics in 1956 after completing a doctoral dissertation, titled "Extension Theory Of Ordinary Linear Differential Operators", under the supervision of
Jacob T. Schwartz __NOTOC__ Jacob Theodore "Jack" Schwartz (January 9, 1930 – March 2, 2009) was an American mathematician, computer scientist, and professor of computer science at the New York University Courant Institute of Mathematical Sciences. He was the ...
.


Career

Much of Rota's career was spent as a professor at the
Massachusetts Institute of Technology The Massachusetts Institute of Technology (MIT) is a private land-grant research university in Cambridge, Massachusetts. Established in 1861, MIT has played a key role in the development of modern technology and science, and is one of the ...
(MIT), where he was and remains the only person ever to be appointed Professor of Applied Mathematics and Philosophy. Rota was also the Norbert Wiener Professor of Applied Mathematics. In addition to his professorships at MIT, Rota held four honorary degrees, from the University of Strasbourg, France (1984); the
University of L'Aquila The University of L'Aquila ( it, Università degli Studi dell'Aquila) is a public research university located in L'Aquila, central Italy. It was founded in 1964 (its history begins in 1596) and is organized in nine departments. The university pr ...
, Italy (1990); the
University of Bologna The University of Bologna ( it, Alma Mater Studiorum – Università di Bologna, UNIBO) is a public research university in Bologna, Italy. Founded in 1088 by an organised guild of students (''studiorum''), it is the oldest university in continu ...
, Italy (1996); and Brooklyn Polytechnic University (1997). Beginning in 1966 he was a consultant at
Los Alamos National Laboratory Los Alamos National Laboratory (often shortened as Los Alamos and LANL) is one of the sixteen research and development laboratories of the United States Department of Energy (DOE), located a short distance northwest of Santa Fe, New Mexico, ...
, frequently visiting to lecture, discuss, and collaborate, notably with his friend
Stanisław Ulam Stanisław Marcin Ulam (; 13 April 1909 – 13 May 1984) was a Polish-American scientist in the fields of mathematics and nuclear physics. He participated in the Manhattan Project, originated the Teller–Ulam design of thermonuclear weapon ...
. He was also a consultant for the Rand Corporation (1966–71) and for the
Brookhaven National Laboratory Brookhaven National Laboratory (BNL) is a United States Department of Energy national laboratory located in Upton, Long Island, and was formally established in 1947 at the site of Camp Upton, a former U.S. Army base and Japanese internment c ...
(1969–1973). Rota was elected to the National Academy of Sciences in 1982, was vice president of the
American Mathematical Society The American Mathematical Society (AMS) is an association of professional mathematicians dedicated to the interests of mathematical research and scholarship, and serves the national and international community through its publications, meetings, ...
(AMS) from 1995–97, and was a member of numerous other mathematical and philosophical organizations. He taught a difficult but very popular course in
probability Probability is the branch of mathematics concerning numerical descriptions of how likely an event is to occur, or how likely it is that a proposition is true. The probability of an event is a number between 0 and 1, where, roughly speakin ...
. He also taught Applications of Calculus, differential equations, and Combinatorial Theory. His philosophy course in
phenomenology Phenomenology may refer to: Art * Phenomenology (architecture), based on the experience of building materials and their sensory properties Philosophy * Phenomenology (philosophy), a branch of philosophy which studies subjective experiences and a ...
was offered on Friday nights to keep the enrollment manageable. Among his many eccentricities, he would not teach without a can of
Coca-Cola Coca-Cola, or Coke, is a carbonated soft drink manufactured by the Coca-Cola Company. Originally marketed as a temperance drink and intended as a patent medicine, it was invented in the late 19th century by John Stith Pemberton in Atlant ...
, and handed out prizes ranging from
Hershey bar The Hershey's Milk Chocolate Bar (commonly called the Hershey's Bar, or more simply the Hershey Bar) is a flagship chocolate bar manufactured by The Hershey Company. Hershey refers to it as "The Great American Chocolate Bar". The Hershey Milk Ch ...
s to
pocket knives A pocketknife is a knife with one or more blades that fold into the handle. They are also known as jackknives (jack-knife), folding knives, or may be referred to as a penknife, though a penknife may also be a specific kind of pocketknife. A ty ...
to students who asked questions in class or did well on tests. Rota began his career as a functional analyst, but switched to become a distinguished combinatorialist. His series of ten papers on the "Foundations of Combinatorics" in the 1960s is credited with making it a respectable branch of modern mathematics. He said that the one combinatorial idea he would like to be remembered for is the correspondence between combinatorial problems and problems of the location of the zeroes of
polynomial In mathematics, a polynomial is an expression consisting of indeterminates (also called variables) and coefficients, that involves only the operations of addition, subtraction, multiplication, and positive-integer powers of variables. An example ...
s. He worked on the theory of
incidence algebra In order theory, a field of mathematics, an incidence algebra is an associative algebra, defined for every locally finite partially ordered set and commutative ring with unity. Subalgebras called reduced incidence algebras give a natural constructi ...
s (which generalize the 19th-century theory of
Möbius inversion Moebius, Möbius or Mobius may refer to: People * August Ferdinand Möbius (1790–1868), German mathematician and astronomer * Theodor Möbius (1821–1890), German philologist * Karl Möbius (1825–1908), German zoologist and ecologist * Paul ...
) and popularized their study among combinatorialists, set the
umbral calculus In mathematics before the 1970s, the term umbral calculus referred to the surprising similarity between seemingly unrelated polynomial equations and certain "shadowy" techniques used to "prove" them. These techniques were introduced by John Blis ...
on a rigorous foundation, unified the theory of
Sheffer sequence In mathematics, a Sheffer sequence or poweroid is a polynomial sequence, i.e., a sequence of polynomials in which the index of each polynomial equals its degree, satisfying conditions related to the umbral calculus in combinatorics. They are ...
s and polynomial sequences of
binomial type In mathematics, a polynomial sequence, i.e., a sequence of polynomials indexed by non-negative integers \left\ in which the index of each polynomial equals its degree, is said to be of binomial type if it satisfies the sequence of identities :p_ ...
, and worked on fundamental problems in
probability theory Probability theory is the branch of mathematics concerned with probability. Although there are several different probability interpretations, probability theory treats the concept in a rigorous mathematical manner by expressing it through a set ...
. His philosophical work was largely in the
phenomenology Phenomenology may refer to: Art * Phenomenology (architecture), based on the experience of building materials and their sensory properties Philosophy * Phenomenology (philosophy), a branch of philosophy which studies subjective experiences and a ...
of
Edmund Husserl , thesis1_title = Beiträge zur Variationsrechnung (Contributions to the Calculus of Variations) , thesis1_url = https://fedora.phaidra.univie.ac.at/fedora/get/o:58535/bdef:Book/view , thesis1_year = 1883 , thesis2_title ...
. Rota founded the '' Advances in Mathematics'' journal in 1961.Gian-Carlo Rota obituary
April 22, 1999.


Death

Rota died of atherosclerotic cardiac disease on April 18, 1999, apparently in his sleep at his home in Cambridge, Massachusetts.


See also

*
Kallman–Rota inequality In mathematics, the Kallman–Rota inequality, introduced by , is a generalization of the Landau–Kolmogorov inequality to Banach spaces. It states that if ''A'' is the infinitesimal generator of a one-parameter contraction semigroup In mathe ...
*
Rota's conjecture Rota's excluded minors conjecture is one of a number of conjectures made by mathematician Gian-Carlo Rota. It is considered to be an important problem by some members of the structural combinatorics community. Rota conjectured in 1971 that, for e ...
*
Rota's basis conjecture In linear algebra and matroid theory, Rota's basis conjecture is an unproven conjecture concerning rearrangements of bases, named after Gian-Carlo Rota. It states that, if ''X'' is either a vector space of dimension ''n'' or more generally a matr ...
* Rota–Baxter algebra *
Joint spectral radius In mathematics, the joint spectral radius is a generalization of the classical notion of spectral radius of a matrix, to sets of matrices. In recent years this notion has found applications in a large number of engineering fields and is still a topi ...
, introduced by Rota in the early 1960s * Cyclotomic identity * Necklace ring *
Twelvefold way In combinatorics, the twelvefold way is a systematic classification of 12 related enumerative problems concerning two finite sets, which include the classical problems of counting permutations, combinations, multisets, and partitions either of ...
*
List of American philosophers This is a list of American philosophers; of philosophers who are either from, or spent many productive years of their lives in the United States. {, border="0" style="margin:auto;" class="toccolours" , - ! {{MediaWiki:Toc , - , style="text-al ...


Notes


External links

* * * * This page at www.rota.org was not originally intended to be a memorial web site, but was created by Rota himself with the assistance of his friend Bill Chen in January 1999 while Rota was visiting Los Alamos National Laboratory. *. From
Los Alamos Science ''Los Alamos Science'' was the Los Alamos National Laboratory's flagship publication in the years 1980 to 2005. Its main purpose was to present the laboratory's research and its significance to national security to the scientific community, and US ...
No. 12
PDF
.

* ttp://www.math.tamu.edu/~cyan/Rota.html Tribute page by Prof. Catherine Yan (Texas A&M University), a former student of Rotabr>Scanned copy of Gian-Carlo Rota's and Kenneth Baclawski's Introduction to Probability and Random Processes manuscript in its 1979 version.
* , ; review a
MAA.orgThe Digital Footprint of Gian-Carlo Rota
International Conference in memory of Gian-Carlo Rota, organized by Ottavio D'Antona, Vincenzo Marra and
Ernesto Damiani Ernesto Damiani is a professor of computer science at the University of Milan, where he leads the ''Architectures Research'' (SESAR) Lab. He is the Senior Director of the Artificial Intelligence and Intelligent Systems Institute at Khalifa Univ ...
at the
University of Milan The University of Milan ( it, Università degli Studi di Milano; la, Universitas Studiorum Mediolanensis), known colloquially as UniMi or Statale, is a public research university in Milan, Italy. It is one of the largest universities in Europe ...
(Italy)
Gian-Carlo Rota on Analysis and Probability
.
Joseph P. S. Kung, "Gian-Carlo Rota", Biographical Memoirs of the National Academy of Sciences (2016)
{{DEFAULTSORT:Rota, Gian-Carlo 1932 births 1999 deaths People from Vigevano 20th-century Italian mathematicians 20th-century Italian philosophers 20th-century American mathematicians American philosophers Combinatorialists American people of Italian descent Princeton University alumni Yale University alumni Massachusetts Institute of Technology School of Science faculty Phenomenologists Probability theorists