Curriculum Vitae

Leslie Saper

Box 90320, Dept. Of Mathematics, Durham, NC 27708-0320 (919) 660-2843 (office)
(email)
Personal

Born: 17 October 1957
Place: West Chester, PA
Citizenship: US

Education

Ph.D.Princeton University1984
B.S.Yale University1979
M.S.Yale University1979
Areas of Research

Locally symmetric varieties, Number theory and automorphic forms,
L2-cohomology and intersection cohomology, Geometrical analysis of singularities

Professional Experience / Employment History

Duke University
Professor, Mathematics, 2005 - present
Associate Profesor, Mathematics, 1988 - 2005
(tenure granted, 1989)
Assistant Professor, Mathematics, 1986-88
M.I.T.
C. L. E. Moore Instructor, Mathematics, 1984-86
Visiting Positions
Visiting Professor, University of North Carolina, August 2010 - December 2010
Member, Tata Institue for Fundamental Research, December 2005 - February 2006
Member, Institut des Hautes Études Scientifiques, March-April 2000
Visiting Scholar, UCSD, June-August, 1996-97
Hermann Minkowski Gastprofessur, Katholische Universität Eichstätt, May-August 1995
Member, Institute for Advanced Study, 1992-93
Visiting Scholar, UCSD, June-August, 1990-94
Visiting Scholar, Harvard University, 1988-89
Visiting Assistant Professor, University of Illinois at Chicago, 1987-88
Visiting Scholar, UCSD, June-August, 1984-87
Awards, Honors, and Distinctions

Fellow, American Mathematical Society, 0 2013
Inaugural class of Fellows, American Mathematical Society, 0 2012
Invited Address, International Congress of Mathematicians, Kyoto, Japan, August 1990
Invited Address, International Congress of Mathematicians, Kyoto, Japan, August 1990
Alfred P. Sloan Foundation Fellowship, 1989-93
Fellowship, Alfred P. Sloan Foundation, 0 1989
NSF Presidential Young Investigator Award, 1989-95
Presidential Young Investigator Award, NSF, 0 1989
NSF Postdoctoral Research Fellowship, 1987-91
Postdoctoral Research Fellowship, NSF, 0 1987
Major Grant Support

NSF DMS-0502821
NSF DMS-9870162
NSF DMS-9005129
NSF DMS-8957216
NSF DMS-8504029

Conferences Organized

Workshop on Locally Symmetric Spaces, co-organizer with S. Kudla, J. Rohlfs, and B. Speh, May 18, 2008 - May 23, 2008
Professional Service

SPIRE Fellows Advisory Board, October 2, 2017 - present
Mentor for Duke SPIRE Fellows, August 9, 2017 - present
Director of Undergraduate Studies, July 01, 2018 - June 30, 2019
Director of Undergraduate Studies, Department of Mathematics, 2015-19
Director of Undergraduate Studies, July 01, 2015 - June 30, 2018
AMS Committee on Committees, AMS Committee on Committees. February 1, 2013 - January 31, 2015, February 1, 2013 - January 31, 2015
Associate Chair, July 1, 2009 - June 30, 2010
Associate Chair, Department of Mathematics, 2007-10
Associate Chair, July 1, 2007 - June 30, 2009
Workshop on Locally Symmetric Spaces, Co-organizer with S. Kudla, J. Rohlfs, and B. Speh, May 2008
Arts & Sciences Council, 2004-07
Director of Graduate Studies, Department of Mathematics, Duke University, 2001-03
Director of Graduate Studies, Department of Mathematics, 2001-03
Editor, Proceedings of the American Mathematical Society, 1996-2000
Editorial board member, Proceedings of the American Mathematical Society, 1996-2000
Editorial board member, Duke Mathematical Journal, 1991-94
Selected Invited Talks

L2-cohomology of projective algebraic varieties, International Conference on Singularity Theory—in Honor of Henry Laufer's 70th Birthday, Tsinghua Sanya International Mathematics Forum, Sanya, China, 20 December 2015
Perverse sheaves on compactifications of locally symmetric spaces, Isaac Newton Institute, Cambridge, England, July 28, 2015
Perverse sheaves and the reductive Borel-Serre compactification, Johns Hopkins University, Baltimore, November 21-23, 2014
Raghunathan's Vanishing Theorem and Applications, Mumbai, India, December 28, 2011
Cohomology of Locally Symmetric Spaces and the Moduli Space of Curves, Germany, June 09, 2011
The congruence subgroup kernel and the reductive Borel-Serre compactification, Algebraic Geometry and Number Theory seminar at John Hopkins University, Baltimore, March 1, 2011
Self-dual sheaves and L²-cohomology of locally symmetric spaces, Hausdorff Center for Mathematics, Bonn, Germany, June 24, 2010
What is ... intersection homology?, University of Michigan, Ann Arbor, February 17, 2009
$\mathscr L$-modules and the cohomology of locally symmetric spaces, International conference on Représentations des groupes de Lie et applications, Institut Henri Poincaré, Paris, France, December 15, 2008
ℒ-modules and the cohomology of locally symmetric spaces, Institut Henri Poincaré, Paris, France, 15 December 2008
Quadratic Reciprocity from Euler to Langlands, Graduate/faculty Seminar, Duke University, [abstract], September 28, 2007
Geometry and Topology of Locally Symmetric Spaces, Instituto de Matemáticas Unidad Morelia, Morelia, Mexico, January 8, 2007
Cohomology of Locally Symmetric Spaces, International conference and instructional workshop on discrete groups, Morningside Center of Mathematics, Chinese Academy of Science, Beijing, China [slides], July 17 - August 4, 2006
L²-Harmonic Forms on Locally Symmetric Sapces, Tata Institute for Fundamental Research, Mumbai, India, January 19, 2006
L2-cohomology of locally symmetric spaces, International Conference In Memory of Armand Borel: Algebraic groups, arithmetic groups, automorphic forms and representation theory, Center of Mathematical Sciences at Zhejiang University, China, 26 - 30 July, 2004
Cohomology of compactifications of locally symmetric spaces, The Graduate School of Mathematical Sciences, University of Tokyo, Japan, 16 - 30 December 2003
On the Cohomology of Locally Symmetric Spaces and their Compactifications (two lectures), Harvard University, 15-17 November 2002
The Rapoport-Goresky-MacPherson Conjecture, Johns Hopkins University, 23 March 2001
Rapoport's conjecture on the intersection cohomology of the reductive Borel-Serre compactification, Institut Henri Poincaré, Paris, France, 25 April 2000
L₂-cohomology of Algebraic Varieties, International Congress of Mathematicians, Kyoto, Japan, 23 August 1990
Doctoral Theses Directed

Oliver Gjoneski, Cohomology of Arithmetic Groups, and Multi-Variable Period Polynomials Associated to Cusp Forms, (January, 2007 - May 15, 2011)
Dan Yasaki, On the Existence of Spines for Q-rank 1 Groups, (January 1, 2001 - May 15, 2005)
Charles Vuono, The Kodaira Embedding Theorem for Kähler Varieties with Isolated Singularities, (September 1, 1989 - May 31, 1992)
Professional Affiliations

Member: AMS

Publications

Papers Published

  1. Saper, L, ℒ-modules and micro-support, to appear in Annals of Mathematics (2018).
  2. Saper, L, Perverse sheaves and the reductive Borel-Serre compactification, in Hodge Theory and L²-analysis, edited by Ji, L, vol. 39 (2017), pp. 555-581, International Press.
  3. Ji, L; Murty, VK; Saper, L; Scherk, J, The fundamental group of reductive Borel–Serre and Satake compactifications, Asian Journal of Mathematics, vol. 19 no. 3 (2015), pp. 465-486, International Press of Boston.
  4. Leslie D. Saper, $\mathscr L$-modules and the conjecture of Rapoport and Goresky-MacPherson, in Formes Automorphes (I) -- Actes du Semestre du Centre Émile Borel, printemps 2000, Astérisque, edited by J. Tilouine, H. Carayol, M. Harris, M.-F. Vignéras, vol. 298 (2005), pp. 319--334, Société Mathématique de France.
  5. Saper, L, ℒ-modules and the conjecture of Rapoport and Goresky-Macpherson, in Formes Automorphes (I) — Actes du Semestre du Centre Émile Borel, printemps 2000, edited by Tilouine, J; Carayol, H; Harris, M; Vignéras, M-F, vol. 298 no. 298 (2005), pp. 319-334.
  6. Saper, L, L2-Cohomology of Locally Symmetric Spaces, I, Pure and Applied Mathematics Quarterly, vol. 1 no. 4 (2005), pp. 889-937, International Press of Boston.
  7. Saper, L, Geometric rationality of equal-rank Satake compactifications, Mathematical Research Letters, vol. 11 no. 5 (2004), pp. 653-671, International Press of Boston.
  8. Saper, L, On the Cohomology of Locally Symmetric Spaces and of their Compactifications, in Current developments in mathematics, 2002, edited by Jerison, D; Lusztig, G; Mazur, B; Mrowka, T; Schmid, W; Stanley, R; Yau, S-T (2003), pp. 219-289, International Press (reprinted in Lie Groups and Automorphic Forms, edited by L. Ji, et al., AMS/IP Studies in Advanced Mathematics, vol. 37, 2006.).
  9. Saper, L, Tilings and finite energy retractions of locally symmetric spaces, Commentarii Mathematici Helvetici, vol. 72 no. 2 (December, 1997), pp. 167-201, Research Institute for Mathematical Sciences, Kyoto University.
  10. Saper, L, L²-cohomology of the Weil-Peterson metric, in Mapping Class Groups and Moduli Spaces of Riemann Surfaces Proceedings of Workshops Held June 24-28, 1991, in Göttingen, Germany, and August 6-10, 1991, in Seattle, Washington, edited by Bödigheimer, C-F; Hain, R, vol. 150 , pp. 345-360, Amer. Math. Soc..
  11. Leslie D. Saper and Mark Stern, Appendix to: On the shape of the contribution of a fixed point on the boundary. The case of Q-rank one, by M. Rapoport, in The Zeta Functions of Picard Modular Surfaces, edited by R. Langlands and D. Ramakrishnan (1992), Les Publications CRM, Montréal (pp. 489-491.).
  12. Saper, L, $L_2$-cohomology of Kähler varieties with isolated singularities, Journal of Differential Geometry, vol. 36 no. 1 (1992), pp. 89-161, International Press of Boston.
  13. Saper, L; Stern, M, Appendix to: On the shape of the contribution of a fixed point on the boundary. The case of Q-rank one, by M. Rapoport, in The zeta functions of Picard modular surfaces based on lectures delivered at a CRM Workshop in the spring of 1988, edited by Langlands, R; Ramakrishnan, D (1992), pp. 489-491, Centre De Recherches Mathématiques.
  14. Habegger, N; Saper, L, Intersection cohomology of cs-spaces and Zeeman's filtration, Inventiones Mathematicae, vol. 105 no. 1 , pp. 247-272, Springer Nature.
  15. Saper, L, L₂-cohomology of algebraic varieties, in Proceedings of the International Congress of Mathematicians, August 21-29, 1990, Kyoto, edited by Satake, I, vol. 1 , pp. 735-746, Springer Verlag.
  16. Saper, L; Zucker, S, An introduction to L²-cohomology, in Several Complex Variables and Complex Geometry, vol. 52, Part 2 , pp. 519-534, Amer. Math. Soc..
  17. SAPER, L; STERN, M, L2-COHOMOLOGY OF ARITHMETIC VARIETIES, Annals of Mathematics, vol. 132 no. 1 , pp. 1-69, JSTOR.
  18. Saper, L; Stern, M, L(2)-cohomology of arithmetic varieties., Proceedings of the National Academy of Sciences of the United States of America, vol. 84 no. 16 , pp. 5516-5519.
  19. Saper, L, L₂-cohomology and intersection homology of certain algebraic varieties with isolated singularities, Inventiones Mathematicae, vol. 82 no. 2 , pp. 207-255, Springer Nature.

Preprints

  1. L. Ji, K. Murty, L. Saper, and J. Scherk, The Congruence Subgroup Kernel and the Fundamental Group of the Reductive Borel-Serre Compactification (June, 2011).

Last modified: 2019/02/19