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 146 research declarations. Search 10,000 more complete Mathlib declarations.

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Project-declaredLean 4.29.0-rc6

Weak Problem exists of divergence Data

DeGiorgi.weakProblem_exists_of_divergenceData

Plain-language statement

Existence of zero-Dirichlet weak solutions for divergence-form right-hand side data div F.

partial differential equationsregularity theoryanalysis

Source project: DeGiorgi

Person-level attribution pending.

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Project-declaredLean 4.29.0-rc6

Weak Problem unique

DeGiorgi.weakProblem_unique

Plain-language statement

Zero-boundary weak solutions are unique up to a.e. equality.

partial differential equationsregularity theoryanalysis

Source project: DeGiorgi

Person-level attribution pending.

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Project-declaredLean 4.29.0-rc6

Weak Problem RHSOf Field eq of mem H01

DeGiorgi.weakProblemRHSOfField_eq_of_memH01

Plain-language statement

On H₀¹(Ω), the raw-function RHS agrees with the witness-dependent divergence-form functional.

partial differential equationsregularity theoryanalysis

Source project: DeGiorgi

Person-level attribution pending.

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Project-declaredLean 4.29.0-rc6

Weak Problem RHSOf Field And Datum bound

DeGiorgi.weakProblemRHSOfFieldAndDatum_bound

Plain-language statement

The shifted raw RHS is bounded on H₀¹(Ω) with respect to the gradient seminorm.

partial differential equationsregularity theoryanalysis

Source project: DeGiorgi

Person-level attribution pending.

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Project-declaredLean 4.29.0-rc6

Weak Solution stability

DeGiorgi.weakSolution_stability

Plain-language statement

Stability estimate for weak solutions.

partial differential equationsregularity theoryanalysis

Source project: DeGiorgi

Person-level attribution pending.

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