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v3
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Mathlib v3 is deprecated.
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Theorem
nat.card_eq_two_iff'
Modification history
2022-10-12 13:05
src/set_theory/cardinal/finite.lean
refactor(set_theory/cardinal): review API about `#α = 2`/`nat.card α = 2` (#16899) …
Added
nat.card_eq_two_iff'
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