Theorem Counterexample.SorgenfreyLine.isClosed_of_subset_antidiagonal

Modification history

2023-07-19 07:03
Counterexamples/SorgenfreyLine.lean
feat: +1 proof that Sorgenfrey plane is not normal (#5775)
Modified Counterexample.SorgenfreyLine.isClosed_of_subset_antidiagonalView on Github →
2023-07-04 05:50
Counterexamples/SorgenfreyLine.lean
feat: port Counterexamples.SorgenfreyLine (#4978)
Added Counterexample.SorgenfreyLine.isClosed_of_subset_antidiagonalView on Github →