Functional integration is a collection of results in mathematics and physics where the domain of an integral is no longer an ordinary region of space, but a space of functions. Functional integrals appear in probability, in the study of partial differential equations, and in the path integral formulation to the quantum mechanics of particles and fields.
Functional integration is a collection of results in mathematics and physics where the domain of an integral is no longer an ordinary region of space, but a space of functions. Functional integrals appear in probability, in the study of partial differential equations, and in the path integral formulation to the quantum mechanics of particles and fields.
Source: Wikipedia "Functional integration" · CC BY-SA 4.0
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