``We are here and it is now. Further than that all human knowledge is moonshine.''
-- H.L. Mencken
David G. Wagner
Department of Combinatorics and Optimization
Faculty of Mathematics
University of Waterloo
CANADA N2L 3G1
dgwagner (at) math.uwaterloo.ca
+1 (519) 888-4567 x32487
Notes for a series of lectures prepared for the Undergraduate Summer
Research Assistants of the C&O Department in 2009.
A survey of the recent work of Julius Borcea and Petter Br"and'en
on their multivariate generalization of the theory of univariate
polynomials with only real roots, and its applications, including
Gurvits's proof of the van der Waerden Conjecture.
Commissioned by the A.M.S. for the Current Events Bulletin at the San Francisco
meeting in January, 2010.
``In the fight between you and the world, back the world.''
-- Frank Zappa
I stumped Google.