A Characterization of Association Schemes from Affine Spaces |
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| Authors: | Edwin R van Dam |
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| Institution: | (1) Dept., Tilburg University, PO Box 90153, 5000 LE Tilburg, The Netherlands |
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| Abstract: | We characterize theassociation schemes from affine spaces as the association schemesin which all relations are equivalence relations (when unitedwith the identity relation). The schemes from affine spaces ofdimension at least three are counterexamples of a conjectureof A. V. Ivanov Problem 1.3]I on amorphic schemes. |
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| Keywords: | Affine geometry association schemes |
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