Source-pinned research

Research proof index

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This index contains 199 research declarations. Search 10,000 more complete Mathlib declarations.

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Project-declaredLean 4.32.0

Lipschitz On With of i Lip ENorm ne top

LipschitzOnWith.of_iLipENorm_ne_top

Plain-language statement

If the project’s inhomogeneous Lipschitz norm of φ\varphi on the ball B(z,R)B(z,R) is finite, then φ\varphi is Lipschitz on that ball. A valid Lipschitz constant is the finite normalized norm divided by RR.

harmonic analysisFourier analysismeasure theory

Source project: Carleson formalization

Person-level attribution pending.

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Project-declaredLean 4.31.0

Logderiv tendsto of div exp tendsto

logderiv_tendsto_of_div_exp_tendsto

Plain-language statement

If F z / exp(a·z) → C ≠ 0 at i∞, then D F / F → a/(2πi): the exponential contributes a/(2πi) and the bounded limit factor's log-derivative vanishes. Public so downstream files (e.g. #331's Θ₂ analysis) can reuse it.

sphere packingFourier analysismodular forms

Source project: Sphere Packing in Dimension 8

Person-level attribution pending.

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Project-declaredLean 4.32.0

Maximal bound antichain

maximal_bound_antichain

Plain-language statement

At every point xx, the magnitude of the Carleson sum over an antichain of tiles is bounded by a constant depending on aa times a maximal function of ff. The maximal function uses, for each tile pp, a ball centered at the tile center with radius 8Ds(p)8D^{\mathfrak{s}(p)}.

harmonic analysisFourier analysismeasure theory

Source project: Carleson formalization

Person-level attribution pending.

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Project-declaredLean 4.31.0

MDifferentiable div

MDifferentiable_div

Plain-language statement

Division of MDifferentiable functions on ℍ is MDifferentiable, when the denominator is everywhere nonzero.

sphere packingFourier analysismodular forms

Source project: Sphere Packing in Dimension 8

Person-level attribution pending.

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Project-declaredLean 4.32.0

Measurable lco Convergent

measurable_lcoConvergent

Plain-language statement

For measurable ff with f(x)1\lVert f(x)\rVert\le1, the scale-nn quantity lcoConvergent, which records a supremum of truncated linearized Carleson integrals over rational radii, is a measurable function of xx.

harmonic analysisFourier analysismeasure theory

Source project: Carleson formalization

Person-level attribution pending.

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Project-declaredLean 4.32.0

C Lp Norm conjneg

MeasureTheory.cLpNorm_conjneg

Plain-language statement

The compact normalized LpL^p norm is unchanged by conjugating a function and reflecting its argument: xf(x)p=fp\|x\mapsto\overline{f(-x)}\|_p=\|f\|_p.

additive combinatoricsarithmetic progressionsFourier analysis

Source project: Arithmetic Progressions Almost Periodicity

Person-level attribution pending.

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