Quantum cluster algebra structures on quantum Grassmannians and their quantum Schubert cells: the finite-type cases

preprint2009arXivOpen access

Abstract

We exhibit quantum cluster algebra structures on quantum Grassmannians Kq[Gr(2,n)]K_q[Gr(2,n)] and their quantum Schubert cells, as well as on Kq[Gr(3,6)]K_q[Gr(3,6)], Kq[Gr(3,7)]K_q[Gr(3,7)] and Kq[Gr(3,8)]K_q[Gr(3,8)]. These cases are precisely those where the quantum cluster algebra is of finite type and the structures we describe quantize those found by Scott for the classical situation.

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