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In a practical sense, hasn't type theory already replaced ZFC in the foundations of math? Lean is what working mathematicians currently use to formally prove th
by b9r5 2y ago
In a practical sense, hasn't type theory already replaced ZFC in the foundations of math? Lean is what working mathematicians currently use to formally prove theorems, and Lean is based on type theory rather than ZFC.
- westurner 2y agoBut HoTT is removed from lean core? From https://news.ycombinator.com/item?id=42440016#42444882 https://news.ycombinator.com/item?id=42440016#42444882 : > /? Hott in lean4 https://www.google.com/search?q=hott+in+lean4 https://www.google.com/search?q=hott+in+lean4 https://github.com/forked-from-1kasper/ground_zero https://github.com/forked-from-1kasper/ground_zero : > Lean 4 HoTT Library