Otto Toeplitz

Otto Toeplitz

male, deceased (1940)
University of Bonn faculty, Jewish person, linear, mathematician, bonn, quadratic…Erdős number 4
Otto Toeplitz (1 August, 1881- 15 February, 1940) was a leading German born mathematician, working on infinite linear and quadratic forms. He was a...
Peter Stefan

Peter Stefan

male, deceased (1978)
Warwick, mathematician, communist, bratislava, slovak, university of warwick…Erdős number 4
Peter Stefan (1941- 1978) was a Slovak mathematician who was known for his works on dynamical systems and mathematical entropy. He attended school...
James Waddell Alexander II

James Waddell Alexander II

male, deceased (1971)
Princeton University, Rockies, mathematician, Princeton University faculty, algebraic topology, mountaineer…Erdős number 4
James Waddell Alexander II was an important topologist of the pre-WWII era and part of an influential Princeton topology elite, which included...
Nigel Weiss

Nigel Weiss

male, 73 years old
Erdős number 4, Nigel Oscar Weiss, Clare College, Cambridge, fluid dynamics, Astronomer, Royal Astronomical Society
Nigel Oscar Weiss (born South Africa, 16 December 1936) is an astronomer and mathematician, and leader in the field of astrophysical and...
Francisco Antônio Dória

Francisco Antônio Dória

male, 64 years old
Stanford University, Brazilian Center for Research in Physics, P=NP, paraconsistent logic, Federal University at Rio de Janeiro, Chemical engineering…Erdős number 4
Francisco Antônio de Moraes Accioli Dória is a Brazilian mathematician and philosopher. Francisco Antônio Dória received his B.S. in Chemical Engi...

William Arthur Kirk

male
University of Iowa, Kirk theorem, fixed point theory, William Arthur ("Art") Kirk, nonlinear functional analysis, Caristi-Kirk fixed point theorem…Erdős number 4
William Arthur ("Art") Kirk is an American mathematician. His research interests include nonlinear functional analysis, the geometry of Banach...

Eduard Prugovečki

male, deceased (2003)
Canadian of Croatian descent, Communist authorities, Communist Romania, Erdős number 4, immigrant to Canada, Yugoslav
Eduard Prugovečki was a Canadian physicist and mathematician of Croatian-Romanian descent. Prugovečki was born in Craiova, Romania to a Romanian mo...

Herbert Seifert

male, deceased (1996)
mathematician, German, University of Leipzig, topology, University of Heidelberg, Technische Universität Dresden…Erdős number 4
Herbert Karl Johannes Seifert was a German mathematician known for his work in topology. He was born in Bernstadt, but soon moved to Bautzen, where...

J. H. C. Whitehead

male, deceased (1960)
Old Etonian, Fellow of Magdalen College, Oxford, Alumni of Balliol College, Oxford, bletchley park, chennai, University of Oxford…Erdős number 4
John Henry Constantine Whitehead, known as Henry, was a British mathematician and was one of the founders of homotopy theory. He was born in Madras...

René Thom

male, deceased (2002)
mathematician, Alumni of the École Normale Supérieure, French, Fields Medalist, topologist, Erdős number 4
René Thom was a French mathematician. He made his reputation as a topologist, moving on to aspects of what would be called singularity theory; he b...