Ring theoretic properties of quantum grassmannians
A C Kelly, T H Lenagan, L Rigal
Abstract
The m x n quantum grassmannian, Gq(m,n), is the subalgebra of the algebra of m x n quantum matrices that is generated by the maximal m x m quantum minors. Several properties of Gq(m,n) are established. In particular, a basis of Gq(m,n) is obtained, and it is shown that Gq(m,n) is a noetherian domain of Gelfand-Kirillov dimension m(n-m)+1. The algebra Gq(m,n) is identified as the subalgebra of coinvariants of a natural left coaction of the m x m quantum special linear group on the algebra of m x n quantum matrices and it is shown that Gq(m,n) is a maximal order.
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