交こう換かん子し

noun

commutator

Physics term for an operator that measures the non-commutativity of two given operators.

• 量りょう子し力りき学がくでは、位い置ちと運うん動どう量りょうの交こう換かん子しはゼロではない。

  In quantum mechanics, the commutator of position and momentum is non-zero.