Mathematics – Representation Theory
Scientific paper
2007-10-08
J.Algebra 320:2079-2100,2008
Mathematics
Representation Theory
19 pages, no figures, uses conm-p-l.cls style file
Scientific paper
10.1016/j.jalgebra.2008.05.026
In this paper we prove a formula for fusion coefficients of affine Kac-Moody
algebras first conjectured by Walton [Wal2], and rediscovered in [Fe]. It is a
reformulation of the Frenkel-Zhu affine fusion rule theorem [FZ], written so
that it can be seen as a beautiful generalization of the classical
Parasarathy-Ranga Rao-Varadarajan tensor product theorem [PRV].
Feingold Alex J.
Fredenhagen Stefan
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