The Feynman identity for planar graphs (Q312455)
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scientific article; zbMATH DE number 6627600
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | The Feynman identity for planar graphs |
scientific article; zbMATH DE number 6627600 |
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The Feynman identity for planar graphs (English)
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15 September 2016
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The Feynman identity for a planar graph is an important tool to deal with combinatorics in the two-dimensional Ising model. It was conjectured by Feynman and proved by Sherman in the sixties. Sherman also noticed that in some special case it has some analogies with the Witt identity used in the Lie algebras. The author works out this algebraic interpretation, by using the Kach-Ward transition matrix.
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Ising model
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Feynman identity
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planar graphs
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Lie superalgebras
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