Geometry

Differential geometry is a vast subject that has its roots in both the classical theory of curves and surfaces and in the work of Gauss and Riemann motivated by the calculus of variations. The subjects with strong representation at Cornell are symplectic geometry, Lie theory, and geometric analysis.

Symplectic geometry is a branch of differential geometry and differential topology that has its origins in the Hamiltonian formulation of classical mechanics. Geometric analysis is a mathematical discipline at the interface of differential geometry and differential equations. Richard Hamilton and James Eells Jr. did some of their groundbreaking work while at Cornell.

Lie groups are named after the 19th century mathematician Sophus Lie, who was motivated by the problem of analyzing the continuous symmetries of differential equations. This area has expanded to encompass a wide variety of topics related to finite and continuous groups. It has significant applications to harmonic analysis, number theory, and mathematical physics. One of the most influential mathematicians working in Lie theory in the early 1950s was Eugene Dynkin, a member of the Cornell mathematics department from 1977 to 2014.

H. C. Wang was a member of the department from 1966 to 1978 and made groundbreaking contributions to differential geometry, topology, and Lie groups. The H. C. Wang instructorship is named in his honor. William Thurston, one of the most influential modern geometers was active in the department from 2003 to 2012.

Faculty Members

Dan M. Barbasch	Representation theory of reductive Lie groups
Yuri Berest	Representation theory, noncommutative geometry, mathematical physics
Xiaodong Cao	Differential geometry and geometric analysis
Robert Connelly	Discrete geometry, computational geometry and the rigidity of discrete structures
Benjamin Dozier	Dynamical systems, Riemann surfaces
Tara Holm	Symplectic geometry
John H. Hubbard	Analysis, differential equations, differential geometry
Allen Knutson	Algebraic geometry and algebraic combinatorics
Yusheng Luo	Dynamical systems, complex dynamics, Teichmüller theory
Reyer Sjamaar	Symplectic geometry
Daniel Stern	Differential geometry, PDEs, calculus of variations
Nicolas Templier	Number theory, automorphic forms, and mathematical physics
Rachel Webb	Problems related to Gromov-Witten theory
Xin Zhou	Geometric Analysis and Calculus of Variations

Emeritus and Other Faculty

Kelly Delp	Geometric structures, manifolds and orbifolds
Ritvik Ramkumar	Algebraic geometry, commutative algebra
Birgit E. Speh	Lie groups, automorphic forms, representation theory
Zhihan Wang	Differential geometry
Hosea Wondo	Geometric analysis