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[Wick's/Isserlis's theorems] 본문
Wick's theorem is a method of reducing high-order derivatives to a combinatorics problem. It is named after Italian physicist Gian-Carlo Wick. It is used extensively in quantum field theory to reduce arbitrary products of creation and annihilation operators to sums of products of pairs of these operators.
https://en.wikipedia.org/wiki/Wick%27s_theorem
Wick's theorem - Wikipedia
From Wikipedia, the free encyclopedia Jump to navigation Jump to search For the formula expressing the higher moments of a Gaussian distribution in terms of the second moments, see Isserlis' theorem. Theorem transforming derivatives into combinatorics prob
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For the formula expressing the higher moments of a Gaussian distribution in terms of the second moments, see Isserlis' theorem.
https://en.wikipedia.org/wiki/Isserlis%27_theorem
Isserlis' theorem - Wikipedia
From Wikipedia, the free encyclopedia Jump to navigation Jump to search For the result in quantum field theory about products of creation and annihilation operators, see Wick's theorem. In probability theory, Isserlis' theorem or Wick's probability theorem
en.wikipedia.org
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