Free logic is a formal system that permits terms without existing referents, unlike classical logic, which presumes all terms denote…
A frame in modal logic defines a set of possible worlds and the accessibility relation between them. It serves as…
A formula is a true or false expression in a formal language. It uses variables and logical connectives to construct…
Formation rules define the syntax of a formal language, dictating how basic symbols combine to create valid, well-formed formulas. These…
A formal system is a set of symbols and rules for manipulating them, used to derive statements or theorems in…
Formal semantics explores the connection between formal systems, particularly in logic and linguistics, and their conceptual or referential meanings. It…
A formal proof is a rigorous demonstration of truth within a formal system. Each step is precisely justified by a…
Formal logic is the study of inference based solely on logical form, disregarding the interpretation of terms. It focuses on…
A formal language is a set of strings built using specific rules. It's crucial in mathematics, computer science, and logic…
A formal fallacy is a flaw in the structure or form of an argument, distinct from errors in its content.…