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Theorem real.sign_of_not_neg

Modification history

2021-06-25 18:48
src/data/real/sign.lean
fix(real/sign): make `real.sign 0 = 0` to match `int.sign 0` (#8080) …
Deleted real.sign_of_not_negView on Github →
2021-06-11 21:18
src/data/real/sign.lean
feat(linear_algebra/quadratic_form): Real version of Sylvester's law of inertia (#7427) …
Added real.sign_of_not_negView on Github →