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Theorem is_upper_set_preimage_to_dual_iff

Modification history

2022-05-04 11:10
src/order/upper_lower.lean
feat(order/basic): Notation for `order_dual` (#13798) …
Modified is_upper_set_preimage_to_dual_iffView on Github →
2022-03-12 16:17
src/order/upper_lower.lean
feat(order/upper_lower): Upper/lower sets (#12189) …
Added is_upper_set_preimage_to_dual_iffView on Github →