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  • A generalization of immanants based on partition algebra characters

  • Part of
  • John M. Campbell
  • Journal:
    Canadian Mathematical Bulletin / Volume 67 / Issue 4 / December 2024
    Published online by Cambridge University Press:
    01 April 2024, pp. 1001-1010
    Print publication:
    December 2024
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  • We introduce a generalization of immanants of matrices, using partition algebra characters in place of symmetric group characters. We prove that our immanant-like function on square matrices, which we refer to as the recombinant, agrees with the usual definition for immanants for the special case whereby the vacillating tableaux associated with the irreducible characters correspond, according to the Bratteli diagram for partition algebra representations, to the integer partition shapes for symmetric group characters. In contrast to previously studied variants and generalizations of immanants, as in Temperley–Lieb immanants and f-immanants, the sum that we use to define recombinants is indexed by a full set of partition diagrams, as opposed to permutations.