Source-pinned research

Research proof index

Search theorem names, mathematical ideas, modules, topics, projects, and role-labelled researchers. Open a result for its complete indexed Lean declaration and source record.

This index contains 22 research declarations. Search 10,000 more complete Mathlib declarations.

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Project-declaredLean 4.32.0-rc1

Rel Mfld Satisfies HPrinciple With bs

RelMfld.SatisfiesHPrincipleWith.bs

Plain-language statement

If a relation satisfies the parametric relative C⁰-dense h-principle wrt some data then we can forget the homotopy and get a family of solutions from every family of formal solutions.

topologydifferential geometryhomotopy

Source project: Sphere eversion

Person-level attribution pending.

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Project-declaredLean 4.32.0-rc1

Sf Homotopy in

sfHomotopy_in'

Plain-language statement

A more precise version of sfHomotopy_in.

topologydifferential geometryhomotopy

Source project: Sphere eversion

Person-level attribution pending.

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Project-declaredLean 4.32.0-rc1

Surrounding Family In iff germ

surroundingFamilyIn_iff_germ

Project documentation

A more precise version of sfHomotopy_in. -/ theorem sfHomotopy_in' {ι} (h₀ : SurroundingFamily g b γ₀ U) (h₁ : SurroundingFamily g b γ₁ U) (τ : ι → ℝ) (x : ι → E) (i : ι) {V : Set E} (hx : x i ∈ V) {t : ℝ} (ht : t ∈ I) {s : ℝ} (h_in₀ : ∀ i, x i ∈ V → ∀ t ∈ I, ∀ (s : ℝ), τ i ≠ 1 → (x i, γ₀ (x i) t s) ∈ Ω) (h_in₁ : ∀ i, x i ∈ V → ∀ t ∈ I, ∀ (s : ℝ), τ i ≠...

topologydifferential geometryhomotopy

Source project: Sphere eversion

Person-level attribution pending.

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