Skip to main content
4 events
when toggle format what by license comment
Jun 11, 2013 at 10:15 vote accept Freddy
Jun 11, 2013 at 9:56 history edited user34821 CC BY-SA 3.0
added 123 characters in body
Jun 11, 2013 at 9:28 comment added user34821 ok, I think that's correct in the general case: for $n\geq 2, k>n$, then if $F$ is, up to reordering, the minimal element of $B_k$ in the lexicographic ordering, then there are infinitely many $w's$ for which you have a positive answer to your question. It's probably true that this condition is also sufficient, i.e. if $F$ is not minimal, then there are no solutions.
Jun 11, 2013 at 9:16 history answered user34821 CC BY-SA 3.0