953 reputation
817
bio website a.b.c.d
location Paris, France
age 55
visits member for 3 years, 8 months
seen Nov 24 at 7:21

Not much to say.


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
May
18
awarded  Constituent
May
8
awarded  Caucus
Apr
14
comment Orthogonal Latin Square 6*6
See my answer for a link on the original paper. A physical copy of the journal of the French "Association for l'Avancement des Sciences" is not so easy to find outside France (where most University libraries have it).
Apr
14
revised Orthogonal Latin Square 6*6
added explanations on the start of the demonstration
Apr
14
answered Orthogonal Latin Square 6*6
Mar
22
awarded  Yearling
Mar
20
awarded  Taxonomist