RequireImport ssreflect. Goal True \/ True -> False. Proof. (* the following should fail: 2 subgoals, but only one intro pattern *)
Fail case => [a]. Abort.
Messung V0.5 in Prozent
[zur Elbe Produktseite wechseln0.12QuellennavigatorsAnalyse erneut starten2026-06-04]