Offer 01$1,000Ridgway Scott Foundation
DocumentedPublish either the existence proof or the nonexistence proof described in the official PDF. First-solver priority and detailed adjudication are not specified.
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The problem
Prove the existence of a nonconstant time-periodic two-dimensional Navier–Stokes solution for flow around a cylinder in the indicated Reynolds-number regime, roughly 50–1000, or prove that none exists.
Open since2025dated prize PDF
Last checked2026.07.27Catalog verification
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Reward offers
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