New posts in Propositional Calculus

Need help formalising simple propositional logic sentences

Propositional calculus and intuitionist logic

Trouble understanding proof to $\vdash ((\neg(\phi\rightarrow \psi))\rightarrow\phi)$?

Why isn’t ‘because’ a logical connective in propositional logic?

Derive $P \to \neg \neg P$ in a structure with not and implies

How is "interpretation" used differently in propositional vs. first-order logic?

When "If $A$ is true then $B$ is true", is it valid to assert that "If $B$ is false, $A$ must also be false"?

Is many-valued logic more powerful than two-valued logic?

Is the disjunction of these two false statements true?

Still struggling to understand vacuous truths