188 reputation
1213
bio website igm.univ-mlv.fr/~giraudo
location France
age 27
visits member for 2 years, 10 months
seen 9 hours ago
Researcher in algebraic combinatorics.

Jan
10
comment Intersection of free objects
And by the way, thanks for the reference!
Jan
10
accepted Intersection of free objects
Jan
10
comment Intersection of free objects
Indeed, I know for the while only the proof given in Lothaire's $\textit{Combinatorics on words}$. The reason why I ask this is because I consider intersection of many other free (combinatorial) algebraic structures than monoids and I would hope that a categorical argument imply their freeness. Since this is not the case (see Jeremy's answer) the only way seems to proceed case by case.
Jan
10
comment Intersection of free objects
Great example. Thanks, Jeremy.
Jan
10
asked Intersection of free objects
Dec
26
revised “The” random tree
Indentation fix in Sage code.
Oct
11
awarded  Constituent
Oct
10
awarded  Caucus
Sep
4
comment How universal is operadic approach to studying algebras?
What is the statement of the theorem that someone should prove? Besides, do you have an example of an algebraic structure which, like groups, cannot be straightforwardly captured by operads, but, unlike groups, a "sneaky" presentation of it makes that it can be?
Aug
12
comment Aspherical operads
You call "monochromatic" any coloured operad on only one colour? The construction you describe is a classical construction from operads to PROs (see Operads and PROPs of M. Markl, Example 60).
Aug
8
awarded  Excavator
Aug
8
revised Subgroups of p-groups
Add an occurrence of the word "order" and a typo corrected.
Aug
8
suggested suggested edit on Subgroups of p-groups
Aug
8
comment Equivalent paths in graphs
@ViditNanda: I think a "face" is a cycle here.
Jul
30
comment Arithmetic product of symmetric functions: why is it integral?
How this product expresses on the monomial, elementary, and Schur bases of symmetric functions?
Jul
28
revised Generating function of factorable binary words
Reformulation of the question.
Jul
28
suggested suggested edit on Generating function of factorable binary words
Jul
28
comment Generating function of factorable binary words
Indeed, it seems that oeis.org/A056267 and oeis.org/A027375 are duplicate.
Jul
28
comment Generating function of factorable binary words
oeis.org/A056267
Jul
28
comment Generating function of factorable binary words
Your are asking for primitive words over a binary alphabet. The coefficients of the generating series you are looking for are the ones of Sequence A056267 of the OEIS. (And please, make an effort in writing your question.)