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The last subconstituent of the Hemmeter graph |
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| Authors: | John S Caughman IV Elizabeth J Hart Jianmin Ma |
| Institution: | aDepartment of Mathematics, Portland State University, P.O. Box 751, Portland, OR 97207, USA bDepartment of Mathematics, Penn State University, University Park, State College, PA 16802, USA cDepartment of Mathematics, Oxford College of Emory University, Oxford, GA 30054, USA |
| Abstract: | We prove that when q is any odd prime power, the distance-2 graph on the set of vertices at maximal distance D from any fixed vertex of the Hemmeter graph HemD(q) is isomorphic to the graph QuadD-1(q) of quadratic forms on |
| Keywords: | Distance-regular graph Quadratic form Hemmeter graph |
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