Robinson Arithmetic
Robinson arithmetic is a simplified version of Peano arithmetic, omitting the induction…
Reverse Mathematics
Reverse mathematics investigates the logical strength of mathematical theorems. It aims to…
Relative Consistency Proof
A relative consistency proof demonstrates that if a system S is consistent,…
Reflexivity in Relations
Reflexivity means every element in a set is related to itself. This…
Recursive Relation
A recursive relation defines a relationship based on its own previous terms.…
Recursive Function Theory
Recursive function theory explores the properties of recursive functions, focusing on their…
Recursive Definition
A recursive definition defines a mathematical object by referring to itself. It…
Understanding the Range of a Function
The range of a function encompasses all possible output values it can…
Ramified Theory of Types
An extension of the simple theory of types, the ramified theory introduces…
Quod Erat Demonstrandum (QED)
QED, a Latin phrase meaning "which was to be demonstrated," marks the…