An inhomogeneous Lambda-determinant

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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.

Original languageEnglish (US)
Article numberP19
JournalElectronic Journal of Combinatorics
Issue number3
StatePublished - Aug 16 2013

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Geometry and Topology
  • Discrete Mathematics and Combinatorics
  • Computational Theory and Mathematics
  • Applied Mathematics


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