I am a professor in the Math Department of the University of the Basque Country. I got my PhD at Washington University in St. Louis. My research interests are PDE's and Number Theory. My hobbies are sailing and traveling around the world.
19 Inverse of a bijection f is equal to its derivative Jan 15 '13
18 Can any two irrational numbers NOT of the form (m+A) and (n-A) be added to produce a rational number? Sep 19 '14
17 If $p$ is prime, does there exist a positive integer $k$ such that $2^k\,p+1$ is also prime? Jun 3 '12
16 Is $1992! - 1$ prime? Jul 27 '15