We follow on from the pioneering paper by the second author where he introduced the Knutson index for the character ring of a finite group. We introduce the Knutson index for general commutative rings. Then we study it for Burnside rings and global representation rings. We also introduce the global table of a finite group, that encompasses both the character table and the Burnside table of marks.
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Johnston et al. (2024) studied this question.
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