de Weger, Benne - Eindhoven University of Technology. Diophantine problems, ABC conjecture. Waldschmidt, Michel - Paris VI (Université Pierre et Marie Curie). Diophantine approximation and transcendence. Weiss, Alfred - University of Alberta. Group representations and number theory. Wamelen, Paul van - Louisiana State University. Genus 2 curves, class number formulae, Jacobi sums, Stark's conjectures, computational projects. Weingartner, Andreas - Southern Utah University. Contact information. Wingberg, Kay - Universität Heidelberg. Algebraic number theory, Iwasawa theory; arithmetic geometry; structure of profinite (or pro-p) groups. Publications. Wan, Daqing - University of California Irvine. Number theory and arithmetic geometry. Publications, preprints. Weston, Tom - University of Massachusetts. Arithmetic geometry, special values of L-functions, Iwasawa theory, deformation theory of Galois representations. Papers and expository articles. Washington, Lawrence C. - University of Maryland. Number theory, cyclotomic fields, elliptic curves, cryptology. Wagstaff, Samuel S. Jr - Purdue University. Cryptography, parallel computation, and analysis of algorithms, especially number theoretic algorithms. Publications, updates on the Cunningham project, software.