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Foulkes' conjecture for sixth powers and quadratic stabilization

OpenAI research collection · 2 manuscripts · Source checked 2026-10-19

OpenAI's result summary

Proves the sixth case of Foulkes’ conjecture: \mathop{Sym}\nolimits ^6(\mathop{Sym}\nolimits ^bV) embeds equivariantly in \mathop{Sym}\nolimits ^b(\mathop{Sym}\nolimits ^6V) for every b ≥ 6 and finite-dimensional complex V. More generally, the canonical multiplication map \mathop{Sym}\nolimits ^b(\mathop{Sym}\nolimits ^aV)→\mathop{Sym}\nolimits ^a(\mathop{Sym}\nolimits ^bV) is surjective for a ≥ 2 and b≥ a(a-1), giving dimension-independent quadratic stabilization.

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Short excerpts below come from OpenAI's abstracts. The full abstract and original PDF preserve the paper's precise scope.

MANUSCRIPT 01

Foulkes' conjecture for the sixth symmetric power

We prove the sixth-symmetric-power case of Foulkes' conjecture. For every integer b ≥ 6 and every finite-dimensional complex vector space V, there is a \mathop{GL}\nolimits (V)-equivariant injection \mathop{Sym}\nolimits ^6(\mathop{Sym}\nolimits ^b V)\hookrightarrow\mathop{Sym}\nolimits ^b(\mathop{Sym}\nolimits ^6 V).

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MANUSCRIPT 02

Quadratic stabilization of the canonical Foulkes--Howe map

For every finite-dimensional complex vector space V, we prove that the canonical Foulkes–Howe map \mathop{Sym}\nolimits ^b(\mathop{Sym}\nolimits ^a V)\longrightarrow\mathop{Sym}\nolimits ^a(\mathop{Sym}\nolimits ^b V) is surjective whenever a ≥ 2 and b≥ a(a-1). This gives a quadratic stabilization bound independent of \dim V.

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