Discharge is the act of eliminating an assumption within a logical derivation. It's a crucial step, often used to prove…
Dilution in logic weakens a statement by adding disjunctive clauses. These additions don't change the original statement's truth value, making…
A designated value in logic functions similarly to truth in classical systems. It ensures that if premises hold a designated…
A derivable rule is a logical rule that can be derived from the existing axioms and inference rules of a…
Deontic modal logic is a specialized field within modal logic that rigorously examines concepts of obligation, permission, and prohibition. It…
Deductivism champions logical deduction as the foremost path to knowledge and reasoning. It prioritizes deriving specific conclusions from general principles,…
Deductive validity ensures that if premises are true, the conclusion *must* be true. It's a cornerstone of logical reasoning, guaranteeing…
The deduction theorem states that if a statement can be derived from a set of premises plus an additional statement,…
A theory with a decision procedure, allowing algorithmic determination of truth or falsehood for any statement within its framework. This…
Curry's paradox is a logical paradox that emerges from self-referential statements asserting their own unprovability. It challenges the consistency of…