The uniqueness of plethystic factorisation

Bowman, Chris; Paget, Rowena

doi:10.1090/tran/8021

The uniqueness of plethystic factorisation
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by Chris Bowman and Rowena Paget PDF

Trans. Amer. Math. Soc. 373 (2020), 1653-1666 Request permission

Abstract:

We prove that the plethysm product of two Schur functions can be factorised uniquely (modulo some trivial cases) and classify homogeneous and indecomposable plethysm products.

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