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arxiv: 1803.10918 · v3 · pith:DLEVOKIG · submitted 2018-03-29 · math.CO · math.RT

A simplified presentation of Specht modules

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classification math.CO math.RT
keywords presentationmodulesspechtappliescolumnsfriedmann-hanlon-stanley-wachscolumnconstruction
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Fulton and Kraskiewicz gave a presentation of Specht modules as a quotient of the space of column tabloids by dual Garnir relations. We simplify this presentation by showing that it can be generated by a single relation for each pair of columns of a tableau with ordered columns, thereby significantly reducing the number of generators given in the original construction. Our presentation applies to all Specht modules, and is of a similar nature to a recent result by Friedmann-Hanlon-Stanley-Wachs that applies to staircase partitions. We show that our presentation implies the Friedmann-Hanlon-Stanley-Wachs presentation.

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