Vocation : Science : Mathematics/ Statistics

Gustave-Adolphe_Hirn

Gustave-Adolphe Hirn (21 August 1815 – 14 January 1890) was a French physicist, astronomer, mathematician, and engineer who made important measurements of the mechanical equivalent of heat and contributions to the early development of thermodynamics. He further applied his science in the practical development of steam engines.

Théophile_de_Donder

Théophile Ernest de Donder (French: [də dɔ̃dɛʁ]; 19 August 1872 – 11 May 1957) was a Belgian mathematician, physicist and chemist famous for his work (published in 1923) in developing correlations between the Newtonian concept of chemical affinity and the Gibbsian concept of free energy.

Carlos_Graef_Fernández

Carlos Graef Fernández (February 25, 1911 – January 13, 1988) was a Mexican physicist and mathematician. A graduate of the National Autonomous University of Mexico (UNAM) and the Massachusetts Institute of Technology (MIT), he was a founding member of the Mexican Mathematical Society and the Mexican Physical Society. He helped to establish the Tonantzintla Observatory and he later directed it. He received the National Prize for Arts and Sciences in 1970.

George_E._Collins

George E. Collins (January 10, 1928 in Stuart, Iowa – November 21, 2017 in Madison, Wisconsin) was an American mathematician and computer scientist. He is the inventor of garbage collection by reference counting[G60]
and of the method of quantifier elimination by cylindrical algebraic decomposition.[G75]He received his PhD from Cornell University in 1955. He worked at IBM, the University of Wisconsin–Madison (1966–1986) Ohio State University, RISC-Linz, Delaware University, and North Carolina State University.

Charles_Sims_(mathematician)

Charles Coffin Sims (April 14, 1937 – October 23, 2017) was an American mathematician best known for his work in group theory. Together with Donald G. Higman he discovered the Higman–Sims group, one of the sporadic groups. The permutation group software developed by Sims also led to the proof of existence of the Lyons group (also known as the Lyons–Sims group) and the O'Nan group (also known as the O'Nan–Sims group).
Sims was born and raised in Elkhart, Indiana, and received his B.S. from the University of Michigan. He did his graduate studies at Harvard University, where he was a student of John G. Thompson and received his Ph.D. degree in 1963. In his thesis, he enumerated p-groups, giving sharp asymptotic upper and lower bounds. Sims is one of the founders of computational group theory and is the eponym of the Schreier–Sims algorithm. He was a faculty member at the Department of Mathematics at Rutgers University from 1965 to 2007. During that period he served, in particular, as Department Chair (1982–84) and Associate Provost for Computer Planning (1984–87). Sims retired from Rutgers in 2007 and moved to St. Petersburg, Florida.In 2012, he became a fellow of the American Mathematical Society.

Carl_Pearcy

Carl Mark Pearcy, Jr. (born August 25, 1935) is an American mathematician whose research has been concentrated on operator theory and operator algebras. He has coauthored several books, including "Introduction to Operator Theory I", Introduction to Analysis", and "Measure and integration", all published by Springer and coauthored by Arlen Brown (and Hari Bercovici in the case of Measure and integration). Pearcy had 31 Ph. D. students at Michigan and TAMU
, several of whom are outstanding mathematicians. Pearcy's bibliography contains more than 150 papers, and his research has concerned the invariant subspace problem and the theory of dual algebras.

Henry_F._Dobyns

Henry Farmer Dobyns, Jr. (July 3, 1925 – June 21, 2009) was an anthropologist, author and researcher specializing in the ethnohistory and demography of native peoples in the American hemisphere. He is most well known for his groundbreaking demographic research on the size of indigenous American populations before the arrival of Christopher Columbus in 1492.