Department of Mathematics

Georgios Pappas

Picture of Georgios Pappas


  • Ph.D., Columbia University, New York, 1992

Currently Teaching
Research Interests

I am interested in number theory, algebraic geometry and representation theory.  I mostly work in arithmetic algebraic geometry. Some more specific themes in my research have been: Shimura varieties and their reductions modulo primes, finite group actions on algebraic varieties, Galois module structure, Galois representations, epsilon constants and values of L-functions, and Riemann-Roch type theorems.

Selected Publications
  • Local Models of Shimura varieties and a conjecture of Kottwitz. (with X. Zhu), Inventiones Math. 194, (2013), no. 1, 147–254.  
  • Cubic structures, equivariant Euler characteristics and modular forms. (with T. Chinburg and M. Taylor), Annals of Math. (2) 170 (2009) no. 2, 561-608.  
  • Twisted loop groups and their affine flag varieties. (with M. Rapoport), Advances in Math. 219 (2008), no. 1, 118--198.   
  • Integral Grothendieck-Riemann-Roch theorem. Inventiones Math., 170 (2007), 455-481.  
  • Galois modules and the Theorem of the Cube. Inventiones Math., 133 (1998), 193-225.   
  • Singularit'es des espaces de modules de Hilbert en caract'eristiques divisant le discriminant. (with P. Deligne), Compositio Mathematica 90 (1994), 59-79.