two equivalent truth tables, two seemingly inequivalent statements
136734
Do truth tables need proofs?
150882
If $\Gamma \cup \{ \neg \varphi \}$ is inconsistent, then $\Gamma \vdash \varphi$
18287
Distinction between equality, logical equivalence and biconditionality.
27107
intersection of the empty set and vacuous truth
83714
$A \in B$ vs. $A \subset B$ for proofs
72034
Truth table and the meaning of $\oplus$ in propositional logic
147874
Why does the existence of independent statements not prove consistency?
106797
Truth Tables for Digital Circuits
65910
Reflexivity of equivalence relations
34045
3 Statements of axiom of choice are equivalent
94421
Why $P(A) \cup P(B)$ is not equivalent to $P(A \cup B)$
43655
Verify is tautology by using logical equivalence
4027
Why does the material conditional have the truth table it does?
35370
Why is this proposition provable and its converse not?
105221
Confusion about Satisfiability by a denumerable sequence.
69043
The equivalence relation generated by a relation
129062
Distinguishing definitions from equivalences.