Erotetic Logic: The Logic of Questions
Erotetic logic is the formal study of questions. It examines question structures,…
Entscheidungsproblem
Hilbert's Entscheidungsproblem sought an algorithm to determine the truth of any mathematical…
Elimination Rule in Logical Inference
An elimination rule in logic simplifies formulas by removing connectives or quantifiers.…
Elimination of Quantifiers
A technique in mathematical logic to remove quantifiers from formulas, preserving logical…
Effectively Decidable Theory
An effectively decidable theory is a formal system where an algorithm can…
Effectively Computable Functions
An effectively computable function is one that can be calculated by an…
Dynamic Modal Logic
Dynamic modal logic explores necessary and possible connections between events. It extends…
Dual of a Truth-Table and Formulas
The dual of a truth-table involves swapping truth values. Connectives like conjunction…
Double Turnstile Symbol (⊨) in Logic
The double turnstile (⊨) symbol signifies semantic entailment or logical consequence. It…