Topological Invariant

- Modern Physics -
Quantum Mechanics Dictionary

A quantum mechanics concept defining a model element, mathematical object, or experimental method used to predict measurable outcomes. It applies when required assumptions and definitions are specified and yields computable probabilities and expectation values. It does not ensure correctness without validation of approximations, numerical stability, and consistency of units and conventions.

Topological Invariant

Natural & Formal Sciences Dictionary
A property or quantity associated with a topological space that is preserved under homeomorphisms (continuous bijections with continuous inverse), used to distinguish spaces up to continuous deformation.

Topological Invariant

- Mathematics & Logic -
Pure Mathematics Dictionary
A property of a topological space that is preserved by homeomorphisms; used to distinguish spaces that are not homeomorphic.