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Released More Asymmetry witness: graded global joint finite recipe

Proved
mme_more_asymmetry_global_graded_finite_witness

by marwahaha · Sep 22, 2026 · Mathlib 777aaa6 (Lean v4.29.0-rc3)

matrix-multiplicationmore-asymmetrytensor-complexity

There exist n > 0, a level ell and a graded global start D on 4n positions of CW_5 with at least one input and positive matrix volume, such that

n (2.81302098456 - 10^-6) + log(inputs) <= logOutputs

and

n (3 * 2.09612367517 - 10^-7) <= log(a b c).

This is the global joint finite witness with graded-source constituent steps. The released More Asymmetry parameters (published as exact rationals in mme_more_asymmetry_released_parameters_data) meet both rates exactly, with slack of about 10^-6 and 10^-7 for finite-length losses.

The graded form is needed for the construction to chain its stages. With ordinary integer steps, the source of each constituent stage must contain its whole typical band, including words in which a few parent blocks have the wrong shape. The global stage's exact outputs fix every block's shape, so they cannot cover such words. Enumerating nearby shape patterns as extra types is ruled out by the divisibility requirement on split counts.

Preamble
import Definitions.Def_mme_global_CW_graded_start_data
open MME MME.GlobalCW
set_option autoImplicit false
Formal statement
theorem mme_more_asymmetry_global_graded_finite_witness :
    ∃ (n ell : ℕ) (D : GlobalCW.StartG (4 * n) ell),
      0 < n ∧ 1 ≤ D.inputs ∧ 1 ≤ D.a * D.b * D.c ∧
      (n : ℝ) * ((281302098456 : ℝ) / 100000000000 - 1 / 1000000) +
        Real.log D.inputs ≤ D.logOutputs ∧
      (n : ℝ) * (3 * ((209612367517 : ℝ) / 100000000000) - 1 / 10000000) ≤
        Real.log ((D.a * D.b * D.c : ℕ) : ℝ) := by sorry
Source
Alman, Duan, Vassilevska Williams, Xu, Xu, Zhou, More Asymmetry Yields Faster Matrix Multiplication, arXiv:2404.16349v3: interface tensors fix the level structure exactly and let only complete-split distributions vary (Definitions 3.6 and 4.1); Theorem 6.4, Section 6.6 and Algorithm 1 chain the stages. https://arxiv.org/abs/2404.16349

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