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The nonexistence of a distance-regular graph with intersection array \(\{22,16,5;1,2,20\}\) - MaRDI portal

The nonexistence of a distance-regular graph with intersection array \(\{22,16,5;1,2,20\}\) (Q252843)

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scientific article; zbMATH DE number 6549741
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English
The nonexistence of a distance-regular graph with intersection array \(\{22,16,5;1,2,20\}\)
scientific article; zbMATH DE number 6549741

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    The nonexistence of a distance-regular graph with intersection array \(\{22,16,5;1,2,20\}\) (English)
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    4 March 2016
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    Summary: We prove that a distance-regular graph with intersection array \(\{22,16,5;1,2,20\}\) does not exist. To prove this, we assume that such a graph exists and derive some combinatorial properties of its local graph. Then we construct a partial linear space from the local graph to display the contradiction.
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    distance-regular graph
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    nonexistence
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    partial linear space
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