Quotation is the practice of repeating words from another source, often marked by quotation marks. In logic, it refers to…
QED, a Latin phrase meaning "which was to be demonstrated," marks the conclusion of a mathematical proof or logical argument.…
Quantity in logic refers to whether a categorical proposition is universal (applies to all members of a class) or particular…
Quantifiers are fundamental logical operators like 'all' or 'some' that specify the quantity of elements in a domain satisfying a…
Pseudo modus ponens is an axiom representing assertion, stating that if A is true and A implies B, then B…
The prosentential theory of truth views truth as a linguistic tool, akin to pronouns, that allows us to refer to…
A propositional function is an expression with variables that becomes a true or false proposition when those variables are assigned…
A proposition is a declarative statement that can be true or false. It's the fundamental building block of logical reasoning,…
Proof-theoretic consequence, also known as syntactic consequence, explores logical entailment based on the structure of proofs within formal systems. It…
A method of mathematical proof where a statement is divided into several exhaustive cases. The statement is then proven to…