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

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Project-declaredLean 4.32.0

Iio subset regularity Domain

LinearPMap.IsSymmetric.Iio_subset_regularityDomain

Plain-language statement

If m is a lower bound on the numerical range then the regularity domain contains (-āˆž,m).

physicsquantum field theoryrelativity

Source project: Physlib

Person-level attribution pending.

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Project-declaredLean 4.32.0

Is Essentially Self Adjoint of defect Number eq zero

LinearPMap.IsSymmetric.isEssentiallySelfAdjoint_of_defectNumber_eq_zero

Plain-language statement

The basic criterion for essential self-adjointness: a symmetric, densely-defined operator whose defect numbers at I and -I both vanish is essentially self-adjoint.

physicsquantum field theoryrelativity

Source project: Physlib

Person-level attribution pending.

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Project-declaredLean 4.32.0

Point Spectrum real

LinearPMap.IsSymmetric.pointSpectrum_real

Plain-language statement

Eigenvalues of a symmetric unbounded operator are real.

physicsquantum field theoryrelativity

Source project: Physlib

Person-level attribution pending.

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Project-declaredLean 4.32.0

Regularity Domain is Connected iff

LinearPMap.IsSymmetric.regularityDomain_isConnected_iff

Plain-language statement

The regularity domain of a symmetric operator is connected iff it contains a real number.

physicsquantum field theoryrelativity

Source project: Physlib

Person-level attribution pending.

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