About the validity of arguments
57672
Trying to get all this terminology straight in logic
79686
How can I prove these statements?
118176
Why is the darapti syllogism invalid?
75381
How can we reason about "if P then Q" or "P only if Q" statements in propositional logic?
76635
Proof through combinatorial argument
136577
In formal logic, how is it possible for an argument with a contradictory conclusion to be valid?
51229
What's the difference between "debate" and "argument"?
108902
Can reason defend itself without resort to reason?
48030
Axiom of Choice: Where does my argument for proving the axiom of choice fail? Help me understand why this is an axiom, and not a theorem.
12186
How does predicate logic handle contradictory statements about something that does not exist?
68265
Why is it sensical for a proposition with a false antecedent to validate to true?
22193
Why, logically, is proof by contradiction valid?
32589
Prove or disprove that Arg(zw)=Arg(z)+Arg(w)
34809
Debate, Bare Plurals, and Mass Nouns
37196
"If P, then Q; If P, then R; Therefore: If Q, then R." Fallacy and Transitivity
24720
varargs and the '...' argument
58983
What fallacy dismisses problems by presenting "bigger" problems?