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- W4297330071 abstract "Many related products and coproducts (e.g. Hadamard, Cauchy, Kronecker, induction, internal, external, Solomon, composition, Malvenuto-Reutenauer, convolution, etc.) have been defined in the following objects : species, representations of the symmetric groups, symmetric functions, endomorphisms of graded connected Hopf algebras, permutations, non-commutative symmetric functions, quasi-symmetric functions, etc. With the purpose of simplifying and unifying this diversity we introduce yet, another -non graded- product the Heisenberg product, that for the highest and lowest degrees produces the classical external and internal products (and their namesakes in different contexts). In order to define it, we start from the two opposite more general extremes: species in the commutative context, and endomorphisms of Hopf algebras in the non-commutative environment. Both specialize to the space of commutative symmetric functions where the definitions coincide. We also deal with the different coproducts that these objects carry -to which we add the Heisenberg coproduct for quasi-symmetric functions-, and study their Hopf algebra compatibility particularly for symmetric and non commutative symmetric functions. We obtain combinatorial formulas for the structure constants of the new product that extend, generalize and unify results due to Garsia, Remmel, Reutenauer and Solomon. In the space of quasi- symmetric functions, we describe explicitly the new operations in terms of alphabets." @default.
- W4297330071 created "2022-09-28" @default.
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- W4297330071 creator A5046098158 @default.
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- W4297330071 date "2015-04-23" @default.
- W4297330071 modified "2023-09-23" @default.
- W4297330071 title "The Heisenberg product: from Hopf algebras and species to symmetric functions" @default.
- W4297330071 doi "https://doi.org/10.48550/arxiv.1504.06315" @default.
- W4297330071 hasPublicationYear "2015" @default.
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