A nonsymmetric version of Okounkov’s BC-type interpolation Macdonald polynomials

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Authors
Publication date 12-2021
Journal Transformation Groups
Volume | Issue number 26 | 4
Pages (from-to) 1261-1292
Organisations
  • Faculty of Science (FNWI) - Korteweg-de Vries Institute for Mathematics (KdVI)
Abstract Nonsymmetric interpolation Laurent polynomials in n variables are introduced, with the interpolation points depending on q and on a n-tuple of parameters τ = (τ1, …, τn). When τi = stn − 1, Okounkov’s 3-parameter BCn-type interpolation Macdonald polynomials are recovered from the nonsymmetric interpolation Laurent polynomials through Hecke algebra symmetrisation with respect to a type Cn Hecke algebra action. In the Appendix we give some conjectures about extra vanishing, based on Mathematica computations in rank two.
Document type Article
Language English
Published at https://doi.org/10.1007/S00031-021-09672-x
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