Finite fields and Ramanujan graphs (Q1362096)
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scientific article; zbMATH DE number 1042498
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Finite fields and Ramanujan graphs |
scientific article; zbMATH DE number 1042498 |
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Finite fields and Ramanujan graphs (English)
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12 August 1997
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A connected \(k\)-regular graph is called a Ramanujan graph if the modulus of any eigenvalue (of its adjacency matrix), different from \(\pm k\), does not exceed \(2\sqrt{k-1}\). The author gives a new method to construct Ramanujan graphs, and he constructs two new families of Ramanujan graphs.
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Ramanujan graph
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eigenvalue
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