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Quiver varieties and quantum affine algebras. (English. Japanese original) Zbl 1246.17021

Sugaku Expo. 19, No. 1, 53-78 (2006); translation from Sūgaku 52, No. 4, 337-359 (2000).
This is mainly an introduction of expository nature to quiver varieties and their applications, however also new results relating quiver varieties to quantum enveloping algebras of affine Lie algebras and their finite-dimensional representations are presented. First the author explains the construction of algebras via convolution products and geometric constructions of quantized enveloping algebras due to Ringel and Lusztig. Then the definition of quiver varieties is given and their relations to (non-affine) quantum enveloping algebras is explained.
See also the author’s paper [J. Am. Math. Soc. 14, No. 1, 145–238 (2001; Zbl 0981.17016)].

MSC:

17B37 Quantum groups (quantized enveloping algebras) and related deformations
14D21 Applications of vector bundles and moduli spaces in mathematical physics (twistor theory, instantons, quantum field theory)
14L30 Group actions on varieties or schemes (quotients)
16G20 Representations of quivers and partially ordered sets
33D80 Connections of basic hypergeometric functions with quantum groups, Chevalley groups, \(p\)-adic groups, Hecke algebras, and related topics