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Prime Power Conjecture

An Abelian planar Difference Set of order $n$ exists only for $n$ a Prime Power. Gordon (1994) has verified it to be true for $n<2,000,000$.

See also Difference Set


Gordon, D. M. ``The Prime Power Conjecture is True for $n<2,000,000$.'' Electronic J. Combinatorics 1, R6 1-7, 1994.

© 1996-9 Eric W. Weisstein