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Not to mention operator calculus. Operators do not, in general, associate. Feynman developed his own notation for operator calculus.
by smaddox 8y ago
Not to mention operator calculus. Operators do not, in general, associate. Feynman developed his own notation for operator calculus.
- gjm11 8y agoHow do operators in general fail to associate? Usually the "multiplication" operation for operators is function application, which is a paradigmatic example of a thing that is associative.
- smaddox 8y agoOperator calculus is much more general than multiplication. It can involve exponentiation, differentiation, integration, etc.