If all the premises are true and the conclusion is false, is it possible for the argument to be logically valid?
47926
What is the logical form of the definition of validity?
30076
Why evaluation doesn't fail if arguments are invalid?
119888
Is it possible to convert $\forall$ quantifiers to $\exists$ quantifiers without negation?
52322
Implication in mathematics - How can A imply B when A is False?
71250
Is this statement always true?
109858
How could a statement be true without proof?
113605
In Fitch, how does one prove "(P → Q)" from the premise "(¬P ∨ Q)"?
127642
Is "incorrect facts" a contradiction in terms?
15504
In classical logic, why is $(p\Rightarrow q)$ True if $p$ is False and $q$ is True?
122075
Does Pascal's Wager contain any logical flaws or fallacies?
143318
Is it possible to accept the alternative hypothesis?
5293
Show that the logic $ \ \forall x \exists y \ P(x,y) \ $ is not logically equivalent to $ \ \exists x \forall y \ P(x,y) \ $
15873
What fallacy dismisses a conclusion because supporters give invalid arguments for it?
57672
Trying to get all this terminology straight in logic
150041
T must be contravariantly valid
101877
Assumed True until proven False. The Curious Case of the Vacuous Truth
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.