ScienceAugust 15, 2026

noncommutativity

non-kom-myoo-tuh-TIV-ih-tee

Definition

A mathematical or physical property where the order in which two operations are performed affects the outcome.

Etymology

Derived from the Latin prefix 'non-' (not) and 'commutare' (to change/exchange), referencing the mathematical property where the order of operations does not matter; in quantum mechanics, it describes variables that do not commute.

In the news

The article discusses how noncommutativity in spacetime models alters the commutation relations of position and momentum, leading to detectable changes in a crystal's thermodynamics.

Thermodynamic Effects Emerge In Snyder-de Sitter Einstein Crystals

Read the full article ↗

Quantum Zeitgeist

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