Understanding the Concept of ‘Mention’ in Philosophy
In philosophy, 'mention' refers to discussing a word or phrase as a…
Matrix in Logic
The matrix is the quantifier-free part of a formula after it's converted…
Material Equivalence in Logic
Material equivalence describes a relationship between two propositions that always share the…
Löb’s Theorem
Löb's theorem in mathematical logic states that if a system can prove…
Knaves in Logic Puzzles
In logic puzzles, knaves are characters who always lie. They are central…
Introduction Rule in Logic
An introduction rule in logic defines how to logically infer a connective…
Hume’s Principle
Hume's principle states that two collections have the same number of objects…
Existential Import in Logic
Existential import refers to the assumption that a statement implies the existence…
Existence Predicate
An existence predicate, often found in free logics, is a logical construct…
Diagonalization Lemma
A crucial lemma in Gödel's incompleteness theorems. It states that for any…