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Reply to sibling - lean4 doesn't rest on ZF or ZFC. https://lean-lang.org/theorem_proving_in_lean4/Axioms-and-Computation/ https://lean-lang.org/theorem_proving
by lanstin 12d ago
Reply to sibling - lean4 doesn't rest on ZF or ZFC. https://lean-lang.org/theorem_proving_in_lean4/Axioms-and-Computation/ https://lean-lang.org/theorem_proving_in_lean4/Axioms-and-Co... However I believe an equivalence of power has been shown between the two.
- mietek 12d agoRoughly, yes. See B. Werner (1997) “Sets in types, types in sets”.