On \(\sigma\)-polynomials (Q1111560)
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scientific article; zbMATH DE number 4075089
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | On \(\sigma\)-polynomials |
scientific article; zbMATH DE number 4075089 |
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On \(\sigma\)-polynomials (English)
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1988
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This paper discusses properties of \(\sigma\)-polynomials (which are closely related to chromatic polynomials in factorial form), and characterizes those that are quadratic. The number of graphs with a given quadratic \(\sigma\)-polynomials is derived, as well as the number of quadratic \(\sigma\)-polynomials, \(\sigma^ 2+a\sigma +b\), for a given a.
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sigma-polynomial
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\(\sigma\)-polynomials
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chromatic polynomials
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quadratic \(\sigma\)-polynomials
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