π€ββ{TF}
ββPβQ
ββπ’
ββππ€
μΉ νβββοΈ
π’{}ββ
ββ«Β±{βββ΄}
βββ
{β¦}βββ
ββxyπ
π€―*+?
ππ*+?
ββββ«
ββΒΉ
#proof #deduction #reasoning #formal logic #quantifiers #truth values #predicate logic #propositional logic