A Cyclic Polytabloid Proof of Saxl's Conjecture

OpenAI

For every m≥1, the tensor square of the staircase Specht representation of the symmetric group S_{m(m+1)/2} contains every irreducible complex representation.

Sources for this record

What was already known

Earlier work established specified constituent families and asymptotically almost all partitions; the tensor cube was known to cover all constituents. The tensor-square conjecture remained open.

AI involvement AI-led

OpenAI credits an internal model with the cyclic-polytabloid manuscript and formal proof. Earlier constituent-family and tensor-cube results are human work.

The source credits an internal OpenAI model with the mathematical manuscript and formal proof; individual-session autonomy is not documented.

Importance Notable

The claimed proof settles the staircase tensor-square conjecture for every m.

Limitations

The source reports a matching Lean proof. The broader universal tensor-square theorem is a separate claim, and no human audit of this induction is documented.

Technical verification Formal (Lean 4 with Mathlib)

The release's Lean scope document says the staircase Kronecker-positivity statement is proved for every m ≥ 1, and the OAI/Saxl main file contains the corresponding theorem. This is a source-reported formal check; the Lean project was not rebuilt here. The comparator file is a target containing sorry, not the proof.

Formal checking

Lean proof of OAI.Saxl.saxl_conjecture and saxl_kronecker_pos in the OAI library, matched to the stated Saxl comparator

Checker
Lean 4 kernel, as reported by the OpenAI math release
Scope
Every staircase Specht tensor square contains every irreducible of the corresponding symmetric group for m ≥ 1
Basis
Reported by the linked checker
Evidence source

Checking a formal statement does not establish that it matches the original problem.

Human understanding Few

No named human explanation of the cyclic-polytabloid mechanism is documented. Few is the evidence default, not a finding that mathematicians cannot understand the proof.

Correction and publication history