Algebra · Oct 6, 2026

Saxl’s conjecture and universal tensor squares

Proves Saxl's conjecture: the tensor square of every staircase representation contains every irreducible complex representation of the corresponding symmetric group. More generally, every Sn with n∉{2,4,9}n\notin\{2,4,9\} has an irreducible representation whose tensor square contains all irreducibles.

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