Suffix notation, also known as reverse Polish notation (RPN), places operators after their operands. This efficient method is used in…
Substructural logics are non-classical systems that alter or remove structural rules of classical logic, like relevance and linear logic, impacting…
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 sublogic is a logical system that forms a subset of a more extensive logic. It preserves certain operations and…
A structural rule in logic, particularly proof theory, governs the manipulation of sequent components. It operates without regard to the…
A relation R is strongly connected if for any two elements x and y, either x is related to y…
Strong induction strengthens the inductive hypothesis, allowing the assumption that the proposition holds for all smaller cases. This powerful technique…
Strong Kleene connectives are logical operators in three-valued logic designed by Stephen Cole Kleene. They handle indeterminate or undefined values,…
A cornerstone of computable function theory, the S-M-N theorem offers a way to create specific computable functions from general ones,…