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The scalar-curvature extension conjecture for Ricci flow in all dimensions

Theorem 1.1: for some q≥10q\ge10 there is a smooth Ricci flow on the closed manifold S2×Sq+1S^2\times S^{q+1} with sup⁡∣R∣<∞\sup|R|<\infty and max⁡M∣Rm∣→∞\max_M|\mathrm{Rm}|\to\infty at the finite maximal time; a corollary gives two-sided power-law curvature blowup with arbitrarily large exponents in one fixed dimension. This refutes the unrestricted all-dimensions conjecture. It relies on Stolarski's construction and gives no explicit dimension; it does not touch dimension four, which the companion proves true.

Exact FrontierDelta

Prior state unknown→disproved

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Occurred: Sep 24, 2026

Delta type: SOURCE CLAIM

Assumptions: VibeMathed verification: unreviewed. Publication: announcement. AI contribution: ai-discovered. VibeMathed editorial classifications, scores, notes, relations, and dataset structure are CC BY 4.0. Source statements and linked content retain their own rights.

Canonical aliases: The scalar-curvature extension conjecture for Ricci flow in all dimensions · Scalar-curvature extension conjecture

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VibeMathed record: The scalar-curvature extension conjecture for Ricci flow in all dimensions evidence for this event

The scalar-curvature extension conjecture for Ricci flow in all dimensions parent of this event

Theorem 1.1: for some q≥10q\ge10 there is a smooth Ricci flow on the closed manifold S2×Sq+1S^2\times S^{q+1} with sup⁡∣R∣<∞\sup|R|<\infty and max⁡M∣Rm∣→∞\max_M|\mathrm{Rm}|\to\infty at the finite maximal time; a corollary gives two-sided power-law curvature blowup with arbitrarily large exponents in one fixed dimension. This refutes the unrestricted all-dimensions conjecture. It relies on Stolarski's construction and gives no explicit dimension; it does not touch dimension four, which the companion proves true. parent of this event

The scalar-curvature extension conjecture for Ricci flow in all dimensions evidence for this event

Bounded scalar curvature and smooth extension of four-dimensional Ricci flow evidence for this event

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