Project-declaredLean 4.24.0-rc1
Reg lang inter
reg_lang_inter
Plain-language statement
Regular languages are closed under intersection.
automata theoryformal languagescomputer science
Source project: Automata Theory
Person-level attribution pending.
Source-pinned research
Research proof index
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Project-declaredLean 4.24.0-rc1
Reg lang union
reg_lang_union
Plain-language statement
Regular languages are closed under union.
automata theoryformal languagescomputer science
Source project: Automata Theory
Person-level attribution pending.
Project-declaredLean 4.21.0-rc3
Categorise permutative Extension of one One
Rel.categorise_permutativeExtension_of_oneOne
Plain-language statement
TODO: Strengthen statement in blueprint version.
set theoryconsistencyfoundations
Source project: Con(NF)
Person-level attribution pending.
Project-declaredLean 4.21.0-rc3
Codom Eq Dom iff
Rel.codomEqDom_iff'
Plain-language statement
An elementary description of the property CodomEqDom.
set theoryconsistencyfoundations
Source project: Con(NF)
Person-level attribution pending.
Project-declaredLean 4.33.0-rc1
Locally Confluent Terminating to Confluent
Relation.LocallyConfluent.Terminating_toConfluent
Project documentation
Newman's lemma: a terminating, locally confluent relation is confluent.
computer sciencecomputabilityprogram semantics
Source project: Lean Computer Science Library
Person-level attribution pending.
Project-declaredLean 4.32.0-rc1
Relative inductive construction of loc
relative_inductive_construction_of_loc
Plain-language statement
We are given a suitably nice extended metric space X and three local constraints P₀,P₀' and P₁ on maps from X to some type Y. All maps entering the discussion are required to statisfy P₀ everywhere. The goal is to turn a map f₀ satisfying P₁ near a compact set K into one satisfying everywhere without changing f₀ near K. The assumpt...
topologydifferential geometryhomotopy
Source project: Sphere eversion
Person-level attribution pending.