A truth function maps truth values (true/false) to truth values. It is fundamental in logic for defining the meaning of…
In logic, the symbol ⊤ represents the maximal element in a lattice or order. It commonly denotes a tautology or…
Tonk is a fictional logical connective that highlights the necessity of inference rules in defining logical operators. It demonstrates how…
Ternary semantics extend possible worlds semantics using a ternary relation, often in relevant logics. This approach offers a richer framework…
The temperature paradox highlights how seemingly illogical conclusions, like 'ninety is rising,' can be valid within specific formal logical systems.…
Syntactic consequence defines the relationship between premises and conclusions derived through logical rules and axioms within a formal system. It…
A syllogistic mood defines a syllogism's type based on the categorical propositions (universal affirmative, negative; particular affirmative, negative) of its…
A substitution instance is the result of replacing variables in a well-formed formula with other formulas. Each variable must be…
Substitution is the fundamental act of replacing variables or expressions in logical formulas with others. It's crucial for maintaining logical…
A subordinate connective is a logical operator appearing within the scope of another logical operator in a compound proposition. It…