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math.CO2026
Character expansions and affine Jacobi-Trudi identities
Ilse Fischer, Moritz Gangl, Álvaro Gutiérrez +1
We provide character expansions of certain specialisations of multiparameter Hall--Littlewood polynomials of types , , and for rectangul…
math.CO2026
Two Littlewood identities for fully inhomogeneous spin Hall-Littlewood symmetric rational functions
Ilse Fischer, Moritz Gangl
Fully inhomogeneous spin Hall-Littlewood symmetric rational functions arise as partition functions of certain path configurations in the higher spin six ver…
math.CO2026
More minor summation formulae
Shane Chern, Theresia Eisenkölbl, Ilse Fischer +8
We prove determinantal-Pfaffian formulae that simultaneously generalise the Pfaffian minor summation formula of Ishikawa and Wakayama and Byun's recent minor summation formula. The…