Skip to main content

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 2,569 curated research declarations and 119,070 complete package declarations. Search 10,000 more complete Mathlib declarations.

All topics

Showing 715 to 720 of 2,569 results.

Project-declaredLean 4.29.0-rc6

Abs subball Average sub ball Average le

DeGiorgi.abs_subballAverage_sub_ballAverage_le

Mathematical statement

The average on a sub-ball differs from the average on a larger ball by at most the volume ratio times the mean oscillation on the larger ball.

partial differential equationsregularity theoryanalysis

Source project: DeGiorgi

Person-level attribution pending.

View proof record
Project-declaredLean 4.29.0-rc6

Ae eq dyadic Ball Average Limit on half Ball

DeGiorgi.ae_eq_dyadicBallAverageLimit_on_halfBall

Mathematical statement

On the inner ball, the dyadic Campanato average limit agrees a.e. with the original function.

partial differential equationsregularity theoryanalysis

Source project: DeGiorgi

Person-level attribution pending.

View proof record
Project-declaredLean 4.29.0-rc6

Ae eq zero of mem H01 of grad Lp Of Witness eq zero

DeGiorgi.ae_eq_zero_of_memH01_of_gradLpOfWitness_eq_zero

Mathematical statement

A zero-trace Sobolev function with vanishing gradient class vanishes almost everywhere.

partial differential equationsregularity theoryanalysis

Source project: DeGiorgi

Person-level attribution pending.

View proof record
Project-declaredLean 4.29.0-rc6

Aestrongly Measurable unit Ball Extension of mem Lp

DeGiorgi.aestronglyMeasurable_unitBallExtension_of_memLp

Mathematical statement

AEStronglyMeasurable for unitBallExtension of rough u. Uses measurable representative + ae_eq transfer.

partial differential equationsregularity theoryanalysis

Source project: DeGiorgi

Person-level attribution pending.

View proof record