Reimplement HOL mechanizing.#254
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sankalpgambhir merged 54 commits intoepfl-lara:mainfrom Feb 16, 2026
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…verse Structure - Added Cardinal.scala to define cardinality concepts including equinumerosity and dominance. - Introduced Universe.scala to establish the structural definition of Tarski/Grothendieck Universes. - Implemented UniverseRank.scala to define the level of a universe and its properties. - Created Predef.scala to export essential definitions from the cardinal package. - Updated Helper.scala, Examples.scala, Symbols.scala, and TypingRules.scala to integrate new cardinality and universe functionalities. - Added new theorems related to universes and cardinalities, including Cantor's theorem and the structure of universes.
…mbols with proposition variable
…rse structure theorem
… handling and subset relations
…etup instructions
Merge branch 'main' into holtypes
…nd fixed most tests.
…uite pass but probably nothing complicated.
sankalpgambhir
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Feb 16, 2026
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reimplement the mechanization of HOL, using the capabilities of lambda-FOL. Made various improvements along the way. Many files changed because I ran scalafix to remove unused imports. Also better integrate the CoC type system development. The HOL system uses it (in part) for proof-producing typechecking.
Interesting parts are the Types package and lisa.hol packageg (including tests). Also some minor changes to the Function package and some other small improvements.