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Geometric Complexity Theory IV

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Geometric Complexity Theory IV Synopsis

The Kronecker coefficient $g_{\lambda \mu \nu}$ is the multiplicity of the $GL(V)\times GL(W)$-irreducible $V_\lambda \otimes W_\mu$ in the restriction of the $GL(X)$-irreducible $X_\nu$ via the natural map $GL(V)\times GL(W) \to GL(V \otimes W)$, where $V, W$ are $\mathbb{C}$-vector spaces and $X = V \otimes W$. A fundamental open problem in algebraic combinatorics is to find a positive combinatorial formula for these coefficients.

The authors construct two quantum objects for this problem, which they call the nonstandard quantum group and nonstandard Hecke algebra. They show that the nonstandard quantum group has a compact real form and its representations are completely reducible, that the nonstandard Hecke algebra is semisimple, and that they satisfy an analog of quantum Schur-Weyl duality.

About This Edition

ISBN: 9781470410117
Publication date:
Author: Jonah Blasiak, Ketan Mulmuley, Milind Sohoni
Publisher: American Mathematical Society
Format: Paperback
Pagination: 160 pages
Series: Memoirs of the American Mathematical Society
Genres: Algebraic geometry
Algebra