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

1 topic

9 results

Clear filters
Project-declaredLean 4.28.0

Ket Is Prod iff rank eq one

MState.Ket.IsProd_iff_rank_eq_one

Plain-language statement

A ket on a product space is a product state if and only if its coefficient matrix has rank 1.

quantum informationentropyquantum channels

Source project: quantumInfo

Person-level attribution pending.

View proof record
Project-declaredLean 4.28.0

Multiset spectrum relabel eq

MState.multiset_spectrum_relabel_eq

Plain-language statement

The multiset of values in the spectrum of a relabeled state is the same as the multiset of values in the spectrum of the original state.

quantum informationentropyquantum channels

Source project: quantumInfo

Person-level attribution pending.

View proof record
Project-declaredLean 4.28.0

Pos Def mix of ne one

MState.PosDef_mix_of_ne_one

Plain-language statement

If the second state is positive definite and the mixture is nondegenerate, their mixture is also positive definite.

quantum informationentropyquantum channels

Source project: quantumInfo

Person-level attribution pending.

View proof record
Project-declaredLean 4.28.0

Pure iff rank eq one

MState.pure_iff_rank_eq_one

Plain-language statement

A mixed state is pure if and only if its rank is 1.

quantum informationentropyquantum channels

Source project: quantumInfo

Person-level attribution pending.

View proof record
Project-declaredLean 4.28.0

Pure of constant spectrum

MState.pure_of_constant_spectrum

Plain-language statement

If the specturm of a mixed state is (1,0,0...) i.e. a constant distribution, it is a pure state.

quantum informationentropyquantum channels

Source project: quantumInfo

Person-level attribution pending.

View proof record
Project-declaredLean 4.28.0

Pure separable iff trace Left pure

MState.pure_separable_iff_traceLeft_pure

Plain-language statement

A pure state is separable iff the partial trace on the left is pure.

quantum informationentropyquantum channels

Source project: quantumInfo

Person-level attribution pending.

View proof record