Is there any Functional equation In functional derivatives so the Feynmann Path integral is its solution?.. i mean given:(adsbygoogle = window.adsbygoogle || []).push({});

[tex] A[\Phi]=\int \bold D[\Phi]e^{iS/\hbar} [/tex]

Then A (functional) satisfies:

[tex] G( \delta , \delta ^{2} , B[\phi] )A[\Phi]=0 [/tex]

where B is a known functional and "delta" here is the functional derivative.

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# Feynmann path integral

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