Felix Christian Klein was a German mathematician and mathematics educator, known for his work in group theory, complex analysis, non-Euclidean geometry, and the associations between geometry and group theory. His 1872 Erlangen program classified geometries by their basic symmetry groups and was an influential synthesis of much of the mathematics of the time.
Marius Sophus Lie was a Norwegian mathematician. He largely created the theory of continuous symmetry and applied it to the study of geometry and differential equations. He also made substantial contributions to the development of algebra.
Moritz Benedikt Cantor was a German historian of mathematics.
Wilhelm Johann Eugen Blaschke was an Austrian mathematician working in the fields of differential and integral geometry.
Adolf Kneser was a German mathematician.
Oskar Perron was a German mathematician.
Friedrich Engel was a German mathematician.
Karl Emanuel Robert Fricke was a German mathematician, known for his work in complex analysis, especially on elliptic, modular and automorphic functions. He was one of the main collaborators of Felix Klein, with whom he produced two classic, two-volume monographs on elliptic modular functions and automorphic functions.
Eugen Otto Erwin Netto was a German mathematician. He was born in Halle and died in Giessen.
Francesco Giacomo Tricomi was an Italian mathematician famous for his studies on mixed type partial differential equations. He was also the author of a book on integral equations.
Alexander Wilhelm von Brill was a German mathematician.
Leon Lichtenstein was a Polish-German mathematician, who made contributions to the areas of differential equations, conformal mapping, and potential theory. He was also interested in theoretical physics, publishing research in hydrodynamics and astronomy.
Georg Scheffers was a German mathematician specializing in differential geometry.
Edward James McShane was an American mathematician noted for his advancements of the calculus of variations, integration theory, stochastic calculus, and exterior ballistics. His name is associated with the McShane–Whitney extension theorem and McShane integral. McShane was professor of mathematics at the University of Virginia, president of the American Mathematical Society, president of the Mathematical Association of America, a member of the National Science Board and a member of both the National Academy of Sciences and the American Philosophical Society.
Lynn Harold Loomis was an American mathematician working on analysis. Together with Hassler Whitney, he discovered the Loomis–Whitney inequality.
Clarence Raymond Adams was an American mathematician who worked on partial difference equations.
Arnold Dresden (1882–1954) was a Dutch-American mathematician, known for his work in the calculus of variations and collegiate mathematics education. He was a president of the Mathematical Association of America and a member of the American Philosophical Society.
Paul Rudolf Eugen Jahnke was a German mathematician.
Karl Rudolf Fueter was a Swiss mathematician, known for his work on number theory.
William Woolsey Johnson (1841–1927) was an American mathematician, who was one of the founders of the American Mathematical Society.
