1999/12/30 by Victor G. Kac, Kac, Victor G.
Mathematics · #17B66 #17B69 #81V22 #FOS: Mathematics #Quantum Algebra (math.QA) #math.QA #msc:17B66 #msc:17B69 #msc:81V22
paper · pdf · doi:10.48550/arxiv.math/9912235
25 pages; a few corrections made in the new version
arxiv created 2001/03/28 · arxiv updated 2009/11/30
Talk given at the conference "Visions in Mathematics toward the year 2000", August 1999, Tel-Aviv.