Sunil Chebolu
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    Sunil K. Chebolu

    Associate Professor and Undergraduate Director
    Illinois State University
    Ph.D., Univ. of Washington (2005)

    Research interests: Modular Representation theory, Tate Cohomology, Galois Cohomology, Number Theory, Triangulated Categories, and General Recreational Mathematics.

    Office: Stevenson 337.
    Office Phone: (309) 438 3893

    Fax: (309) 540 5678 (Include my name)
    E-mail: szchebol@ilstu.eduz     (with the two "z"s removed)

    Address: Department of Mathematics, Illinois State University, Campus Box 4520, Normal, IL 61790. USA

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Sage Cell

About me

I am an associate professor and the undergraduate director in the department of mathematics at Illinois State University. I also hold research assistant professor positions in the mathematics departments at UIUC, and at Western University in Canada.

A brief history of my time since college: From 1995 to 2000, I attended the Indian Statistical Institute (Kolkatta) where I got my Bachelors and Masters degrees in Statistics with a specialisation in Advanced Probability. Under the supervision of John Palmieri I got my Ph.D. in Mathematics at the University of Washington, Seattle in 2005. My thesis was in the area of stable homotopy theory. After completing my Ph.D., I had a 3-year postdoctoral fellowship at the University of Western Ontario, Canada. I joined the Illinois State University in Fall 2008.

My broad interests include Mathematics, Music, Physics, Astronomy, Cosmology, Games, Logic, Computing, Philosophy, and the History of Intellectual Thought.

My current Erdos number is 3: Erdos ---> John Conway ---> Dave Benson ---> Me. You can read about the Erdos number here. The homotopy type of my known mathematical genealogy is a wedge of three circles.

I love working with students. If you are a student who is interested in doing an Honors project, a Masters thesis/project or an independent study/research in some area of Mathematics under my supervision please contact me. I will be very happy to guide you.

I work on a bunch of different areas. Current interests lie in the fields of Number theory, representation theory of groups, Tate cohomology, and Galois cohomology. Visit my research page for more information. My research is being currently supported by a grant from the National Security Agency (NSA).

I am in-charge of the Putnam Mathematical Competition at ISU. If you are an undergraduate student who loves solving math problems, you should definitely take part in Putnam. For more information visit ISU Putnam homepage.


PDF Slides of some talks

  1. What is special about the divisors of 24? Discrete Mathematics seminar, Illinois State Univ., April 21, 2011.
  2. Progress report on the generating hypothesis AMS special session on Homotopy theory and Geometric aspects of algebraic topology, Univ. of Kentucky, Lexington, Mar 27-29, 2010.
  3. The unreasonably beautiful world of numbers, Presentation in Math Club, Illinois State University, March 3rd 2010.
  4. Cohomology of Bloch-Kato profinite groups AMS special session on Homotopy theory, Penn. State Univ., State College, Oct 24-25, 2009.
  5. Cohomology with stones and sticks, Plenary talk at MAA meetings, Bradley univeristy, Peoria, February 2009.
  6. Strongly regular graphs, Discrete Math Seminar, Oct 14th 2008. (Page 10 is missing, here it is Page 10.)
  7. A new interpretation of the quadratic closure of a field, AMS meetings in Vancouver, BC, Oct 3-4, 2008.
  8. A new perspective on groups with periodic cohomology, CMS meetings in London, ON, Dec. 10, 2007.
  9. Towards a refinement of the Bloch-Kato conjecture, CMS meetings in London, ON, Dec. 9, 2007.
  10. Finite generation of Tate cohomology and Freyd's generating hypothesis, AMS meetings in Murfreesboro, TN, Nov. 3, 2007.
  11. Diagrammatic methods in representation theory and cohomology, Graduate student seminar, UWO, London, July 23rd, 2007.
  12. Tate cohomology often fails to detect null homotopy, AMS meetings in Davidson, NC, March 3-4, 2007.
  13. Which finite p-groups are like a finite product of fields?, CMS Winter 2006 meetings, Toronto, December 10, 2006.
  14. Stable homotopy theory -- A gateway to Modern Mathematics, Indian Institute of Science (IISc) and the Indian Statistical Institute (ISI), Bangalore, May 2006
  15. Thick subcategories in stable homotopy theory (work of Devinatz, Hopkins, Smith) at a workshop on thick subcategories, Oberwolfach, Germany, February 2006.
  16. My final examination at the University of Washington, Seattle, May 11 (on my birthday!) 2005.
  17. A Brave New World in homotopy theory, Graduate student topology conference, Northwestern University, Evanston, April 2005
  18. A Krull-Schmidt theorem for wide subcategories of modules, Joint Meetings of the AMS, Atlanta, January 2005


  1. Keir Lockridge and I have organised an AMS special session on "Triangulated categories and their associated cohomology theories" at University Park, PA on October 24-25, 2009.

  2. George Seelinger and I have organised the Fall Midwest Topology Seminar at ISU on Saturday, October 8th, 2011.


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