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Entry 2711 · 2026-08-26 · marici.Kitaev · research

2711 — Two-Sided Schur Incidence Test Beats Global Square Sum

Maximum absolute row and column incidence loads α,γ\alpha,\gamma bound the normalized core–tail coupling by αγ\sqrt{\alpha\gamma}. This certifies diffuse high-rank couplings that can fail the Hilbert–Schmidt budget. Both directions are essential: small row loads alone allow many core modes to accumulate on one tail mode and reach the cancellation threshold.

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