Leon Ehrenpreis (1930-2010) a Truly FUNDAMENTAL Mathematician part 1

Date: September 16, 2010 Speaker: Doron Zeilberger, Rutgers University This is a mathematical ה ס פ ד (eulogy) for my great mentor and influencer, Leon Ehrenpreis, who has made fundamental contributions to mathematics, including the seminal theorem about the existence of a Fundamental solution to any partial linear differential operator with constant coefficients and the amazing statement, and proof, of the so-called Fundamental principle. I will illustrate his beautiful ideas by presenting discrete analogs, where things get much simpler, and Leon’s beautiful ideas shine out in their bare beauty, without the “continuous“ distracting background noise, so no knowledge of analysis is needed to understand this talk.