The sigma coindex of graph operations (Q2036071)
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scientific article; zbMATH DE number 7363825
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | The sigma coindex of graph operations |
scientific article; zbMATH DE number 7363825 |
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The sigma coindex of graph operations (English)
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28 June 2021
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Summary: The sigma coindex is defined as the sum of the squares of the differences between the degrees of all nonadjacent vertex pairs. In this paper, we propose some mathematical properties of the sigma coindex. Later, we present precise results for the sigma coindices of various graph operations such as tensor product, Cartesian product, lexicographic product, disjunction, strong product, union, join, and corona product.
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0.88762754
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0.8636067
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