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Mathematics
Combinatorics
An inhomogeneous Lambda-determinant
P. Di Francesco
Abstract
We introduce a multi-parameter generalization of the Lambda-determinant of Robbins and Rumsey, based on the cluster algebra with coefficients attached to a T-system recurrence. We express the result as a weighted sum over alternating sign matrices.
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Submitted on 28 Sep 2012
Updated
arXiv.org
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