A (49,16,3,6) strongly regular graph does not exist (Q1824629)
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scientific article; zbMATH DE number 4118396
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | A (49,16,3,6) strongly regular graph does not exist |
scientific article; zbMATH DE number 4118396 |
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A (49,16,3,6) strongly regular graph does not exist (English)
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1989
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A (49,16,3,6) strongly regular graph has 49 vertices, each vertex has 16 neighbours, any two adjacent vertices have three common neighbours, and any two distinct non-adjacent vertices have six common neighbours. It is proved that such a graph does not exist. The proof uses counting techniques, eigenvalues and a computer.
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strongly regular graph
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counting techniques
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eigenvalues
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computer
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