
Infinite analogues of the Paley graphs are constructed, based on uncountably many infinite but locally finite fields. Weil's estimate for character sums shows that they are all isomorphic to the random or universal graph of Erd\H os, R��nyi and Rado. Automorphism groups and connections with model theory are considered.
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FOS: Mathematics, Mathematics - Combinatorics, Combinatorics (math.CO), Primary: 05C63. Secondary: 03C13, 03C15, 05C80, 05E18, 11L40, 12E20, 20B25, 20B27, 510, 004
FOS: Mathematics, Mathematics - Combinatorics, Combinatorics (math.CO), Primary: 05C63. Secondary: 03C13, 03C15, 05C80, 05E18, 11L40, 12E20, 20B25, 20B27, 510, 004
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