Truth-Tree: A Guide to Analytic Tableaux
Truth-trees, also known as analytic tableaux, are a method for testing logical…
Structural Rule in Logic
A structural rule in logic, particularly proof theory, governs the manipulation of…
Semantic Tableau: A Tree-Based Proof Method in Logic
The semantic tableau method is a systematic proof technique in logic. It…
Relative Consistency Proof
A relative consistency proof demonstrates that if a system S is consistent,…
Proof-Theoretic Validity
Proof-theoretic validity defines a valid proof within proof-theoretic semantics. It focuses on…
Proof-Theoretic Semantics
An alternative to truth-condition semantics, proof-theoretic semantics emphasizes the role of proof…
Proof-Theoretic Consequence
Proof-theoretic consequence, also known as syntactic consequence, explores logical entailment based on…