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arXiv · 1203.3780

Quantum Schubert cells via representation theory and ring theory

Joel Geiger·Milen Yakimov
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Abstract

We resolve two questions of Cauchon and Meriaux on the spectra of the quantum Schubert cell algebras U^-[w]. The treatment of the first one unifies two very different approaches to Spec U^-[w], a ring theoretic one via deleting derivations and a representation theoretic one via Demazure modules. The outcome is that now one can combine the strengths of both methods. As an application we solve the containment problem for the Cauchon-Meriaux classification of torus invariant prime ideals of U^-[w]. Furthermore, we construct explicit models in terms of quantum minors for the Cauchon quantum affine space algebras constructed via the procedure of deleting derivations from all quantum Schubert cell algebras U^-[w]. Finally, our methods also give a new, independent proof of the Cauchon-Meriaux classification.

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Joel Geiger, Milen Yakimov. 2014-01-03. Quantum Schubert cells via representation theory and ring theory. https://arxiv.org/abs/1203.3780

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