Launois, Stephane, Lenagan, T.H., Rigal, L. (2008) Prime ideals in the quantum grassmanian. Selecta Mathematica  New Series, 13 (4). pp. 697725. ISSN 10221824. (doi:10.1007/s000290080054z) (KAR id:14632)
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Official URL: http://dx.doi.org/10.1007/s000290080054z 
Abstract
We consider quantum Schubert cells in the quantum grassmannian and give a cell decomposition of the prime spectrum via the Schubert cells. As a consequence, we show that all primes are completely prime in the generic case where the deformation parameter q is not a root of unity. There is a natural torus action of H = (k*)(n) on the quantum grassmannian Oq(G(m,n)(k)) and the cell decomposition of the set of Hprimes leads to a parameterisation of the Hspectrum via certain diagrams on partitions associated to the Schubert cells. Interestingly, the same parameterisation occurs for the nonnegative cells in recent studies concerning the totally nonnegative grassmannian. Finally, we use the cell decomposition to establish that the quantum grassmannian satisfies normal separation and catenarity.
Item Type:  Article 

DOI/Identification number:  10.1007/s000290080054z 
Uncontrolled keywords:  quantum matrices; quantum grassmannian; quantum Schubert variety; quantum Schubert cell; prime spectrum; total positivity 
Subjects: 
Q Science > QA Mathematics (inc Computing science) > QA150 Algebra Q Science > QA Mathematics (inc Computing science) > QA165 Combinatorics Q Science > QA Mathematics (inc Computing science) 
Divisions:  Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Mathematics, Statistics and Actuarial Science 
Depositing User:  Stephane Launois 
Date Deposited:  17 Apr 2009 13:25 UTC 
Last Modified:  16 Nov 2021 09:53 UTC 
Resource URI:  https://kar.kent.ac.uk/id/eprint/14632 (The current URI for this page, for reference purposes) 
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