Functional integration successfully entered physics as path integrals in the 1942 Ph.D. dissertation of Richard P.Feynman, but it made no sense at all as a mathematical definition.

• 职能的综合在理查页范曼的1942哲学博士长篇论文成功进入物理学作为道路积分， 但是它确实没有意义作为一个数学定义。