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 Feb 10 comment Circular permutations - $n$ sitting at a round table without repeating neighbors @0ana : 13524 and 14253 are not related by a rotation but by a reversal. Feb 5 comment The discriminant of an integral binary quadratic form and the discriminant of a quadratic number field Is this something you came up by yourself ? If not, please give the source by respect of the authors. Dec 21 awarded Constituent Dec 12 answered zeros of Incomplet Gamma function Dec 12 comment zeros of Incomplet Gamma function @TylerHG : these are not zeroes but misinterpretations of underflows. Dec 11 answered Hypergeometric value Dec 8 awarded Caucus Oct 28 comment What does a non-mathematician need to google to learn more about latin squares in which each number in each row always has a different successor? @hcc23 : I am also interested by your opinion on my sequential solution to your experimental problem. Oct 28 revised What does a non-mathematician need to google to learn more about latin squares in which each number in each row always has a different successor? error in terminology Oct 28 comment What does a non-mathematician need to google to learn more about latin squares in which each number in each row always has a different successor? No you don't miss anything. You spotted a mistake in my terminology. I should have said cyclic (I will edit it), because in the Williams construction described on the H. Bruin page, this is the same array of differences from one column to the next. In fact, this property might be considered a disadvantage if there is an interaction between the properties of your operations and this sequence of difference, making this series of experimental tests not "mixed" or "unbiased" enough. Oct 28 revised What does a non-mathematician need to google to learn more about latin squares in which each number in each row always has a different successor? Added another point of view for the original application of the result. Oct 28 answered What does a non-mathematician need to google to learn more about latin squares in which each number in each row always has a different successor? Oct 27 comment What does a non-mathematician need to google to learn more about latin squares in which each number in each row always has a different successor? Dear @hcc23, you just require that the pairs do not repeat horizontally, am I right ? You also don't need to exclude circular pairs (seeing the latin square as a cylinder or a torus) ? Oct 19 answered Connections between loops (algebraic structure) and graphs Sep 30 awarded Explainer Jul 9 revised Modified latin square added remark about number of symbols. Jul 9 answered Modified latin square Mar 22 awarded Yearling Jan 30 comment Proof concerning Latin squares You are welcome. Consider reading a book about problem solving. The one which was fashionable in my time was Polya's, but there a lot of resources available on the web and in libraries. Jan 28 answered Proof concerning Latin squares