It is better to keep your mouth closed and let people think you are a fool than to open it and remove all doubt.

A Story about Rational Numbers and Advice on Studying and Learning, a talk (with some slides borrowed from Anna Stokke) that I gave at the Newark Charter HS on December 20, 2024

Latin Squares, talk given on Friday, May 13, 2022 for our Math Undergraduate and Graduate Students.

Videos of some of my talks

ICERM Talk in 2020

Microsoft Research talk in 2011

I have given a math talk in Canada, United States, Spain, Romania, The Netherlands, Brazil, South Korea, Italy, England, China, Singapore, France, Malta, Japan, United Arab Emirates.


Create Your Own Visited Countries Map

Following David Galvin, the following is a map of all the US states where I have given a math talk.


Create Your Own Visited States Map

  1. West Virginia: Marshall University 2024
  2. Rhode Island: Zoom talk at ICERM Workshop in 2020
  3. Hawai’i: University of Hawai’i at Manoa 2019
  4. Ohio: Ohio State 2018
  5. Georgia: University of West Georgia 2018
  6. DC: George Washington University 2018
  7. Texas: Rice University 2017
  8. New York: Clarkson University 2017
  9. Maryland: US Naval Academy 2016; Norbert Wiener Center, University of Maryland 2019
  10. Iowa: Iowa State University 2015; ILAS 2017
  11. Alabama: University of Alabama at Huntsville 2014
  12. Florida: AMS Meeting Tampa 2014; University of Miami 2017
  13. Wyoming: University of Wyoming 2011, 2013
  14. Tennessee: University of Memphis 2011; AMS Meeting Knoxville 2014; Middle Tennessee State 2018
  15. Virginia: VCU 2018, 2011; College of W&M 2011
  16. Illinois: REGS University of Illinois at Urbana-Champaign 2011
  17. Washington: Microsoft Research, Redmond 2011
  18. Utah: SIAM Applications of Dynamical Systems, Snowbird 2011; BYU 2019
  19. Minnesota: AMS Meeting, Macalaster College 2010
  20. New Jersey: Princeton 2018,2010; Rutgers 2018
  21. Pennsylvania: Penn State, Drexel 2010
  22. Massachusetts: AMS Meeting, Worcester 2009; MIT 2017, 2014; WPI 2017
  23. Delaware: University of Delaware 2008
  24. South Carolina: College of Charleston 2008
  25. Vermont: SIAM Discrete Math Conference 2008
  26. Arizona: AMS Meeting Tucson 2007
  27. California: Caltech 2008,2007; UC San Diego 2006; Cal State San Marcos 2006
  28. Wisconsin: Brualdi-Fest, Madison 2005
  29. Colorado: AMS Meeting, Boulder, 2003
  30. Indiana: AMS Meeting, Bloomington, 2003; Purdue CS 2014; IUPUI 2021
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