Mathlib v3 is deprecated. Go to Mathlib v4

Theorem counterexample.is_symm_B

Modification history

2023-05-30 23:18
counterexamples/quadratic_form.lean
chore(archive + counterexamples): namespaces imo, theorems_100, counterexample, plus three more (#19129) …
Added counterexample.is_symm_BView on Github →