Source-pinned research

Research proof index

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Project-declaredLean 4.32.0-rc1

Per corrugation

per_corrugation

Plain-language statement

The integral appearing in corrugations is periodic.

topologydifferential geometryhomotopy

Source project: Sphere eversion

Person-level attribution pending.

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Project-declaredLean 4.32.0-rc1

Relative inductive construction of loc

relative_inductive_construction_of_loc

Plain-language statement

We are given a suitably nice extended metric space X and three local constraints P₀,P₀' and P₁ on maps from X to some type Y. All maps entering the discussion are required to statisfy P₀ everywhere. The goal is to turn a map f₀ satisfying P₁ near a compact set K into one satisfying everywhere without changing f₀ near K. The assumpt...

topologydifferential geometryhomotopy

Source project: Sphere eversion

Person-level attribution pending.

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Project-declaredLean 4.32.0-rc1

Rel Loc Formal Sol improve

RelLoc.FormalSol.improve

Plain-language statement

Homotopy of formal solutions obtained by successive corrugations in some landscape L to improve a formal solution 𝓕 until it becomes holonomic near L.K₀.

topologydifferential geometryhomotopy

Source project: Sphere eversion

Person-level attribution pending.

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Project-declaredLean 4.32.0-rc1

Rel Loc Htpy Formal Sol exists sol

RelLoc.HtpyFormalSol.exists_sol

Plain-language statement

A corollary of the local parametric h-principle, forgetting the homotopy and ε-closeness, and just stating the existence of a solution that is holonomic near K. Furthermore, we assume that P = ℝ and K is of the form compact set × I. This is sufficient to prove sphere eversion.

topologydifferential geometryhomotopy

Source project: Sphere eversion

Person-level attribution pending.

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