Quiver varieties and t-analogs of q-characters of quantum affine algebras
Quiver varieties and t-analogs of q-characters of quantum affine algebras
We consider a specialization of an untwisted quantum affine algebra of type ADE at a nonzero complex number, which may or may not be a root of unity.The Grothendieck ring of its finite dimensional representations has two bases, simple modules and standard modules.We identify entries of the transition matrix with …