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Signed combinatorial interpretations in algebraic combinatorics
Igor Pak, Colleen Robichaux
Source abstract
We prove the existence of signed combinatorial interpretations for several large families of structure constants. These families include standard bases of symmetric and quasisymmetric polynomials, as well as various bases in Schubert theory. The results are stated in the language of computational complexity, while the proofs are based on the effective Möbius inversion.
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