Source-pinned research

Research proof index

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This index contains 4 research declarations. Search 10,000 more complete Mathlib declarations.

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Project-declaredLean 4.29.0-rc6

Mem W01p of cont Diff has Compact Support

DeGiorgi.memW01p_of_contDiff_hasCompactSupport

Plain-language statement

A smooth compactly supported function belongs to W₀^{1,p}(ℝ^d).

partial differential equationsregularity theoryanalysis

Source project: DeGiorgi

Person-level attribution pending.

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Project-declaredLean 4.29.0-rc6

Mem W01p of cont Diff has Compact Support subset

DeGiorgi.memW01p_of_contDiff_hasCompactSupport_subset

Plain-language statement

A smooth compactly supported function whose support is contained in an open set belongs to W₀^{1,p} on that set.

partial differential equationsregularity theoryanalysis

Source project: DeGiorgi

Person-level attribution pending.

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Project-declaredLean 4.29.0-rc6

Mem W01p add

DeGiorgi.MemW01p.add

Plain-language statement

H₀¹(Ω) is closed under addition.

partial differential equationsregularity theoryanalysis

Source project: DeGiorgi

Person-level attribution pending.

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Project-declaredLean 4.29.0-rc6

Mem W01p smul

DeGiorgi.MemW01p.smul

Plain-language statement

H₀¹(Ω) is closed under scalar multiplication.

partial differential equationsregularity theoryanalysis

Source project: DeGiorgi

Person-level attribution pending.

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