777 reputation
310
bio website chemie.uni-hamburg.de/ac/AKs/…
location Hamburg
age 53
visits member for 3 years, 4 months
seen yesterday
knot theory dilettant!

Apr
7
asked “Mutant knots” generalizable to “mutant tangled graphs”?
Feb
28
comment (Graded) Lie algebras with “nice” irreps
Ah, I see. This is a newer version of the paper with added sextonions (and a few more graded Lie algebras therein). Everything lies on the Vogel plane but THX.
Feb
26
asked (Graded) Lie algebras with “nice” irreps
Feb
26
comment Replacing the Lie commutator with something else
@UwF and arsmath: Bingo! THX for the references. (I knew it existed, but I wouldn't have known where to begin searching.)
Feb
24
revised Replacing the Lie commutator with something else
If it's still unclear, feel free to delete without asking.
Feb
21
asked Replacing the Lie commutator with something else
Jan
31
asked “Unicolor” irreps (R is in RxR)
Jan
28
accepted Generalizations of Lie algebras
Jan
27
asked Generalizations of Lie algebras
Dec
30
revised Commutators for quantum Lie algebras
Added pic with the formula I'm seeking, but it's just a wild guess.
Dec
28
asked Commutators for quantum Lie algebras
Dec
18
comment Minimal set of 2-2 Pachner move null sequences on a (nonplanar) trivalent graph?
Well, if I could prove that you only have to consider moves on adjacent nodes, it would be easy. Let A flip nodes 1 and 2, B (23) and C (34). AC=CA, but I still can't reduce, say, ABCABC, since already the naming here is inconsistent - after I did move A, 1 and 2 aren't 1 and 2 anymore...
Dec
17
revised Minimal set of 2-2 Pachner move null sequences on a (nonplanar) trivalent graph?
Now with pic
Dec
16
asked Minimal set of 2-2 Pachner move null sequences on a (nonplanar) trivalent graph?
Dec
11
awarded  Yearling
Oct
21
asked Use of “abstract tensors” for trivalent graphs
Sep
18
comment Matrix power problem
@anyone who stumbles over this: It seems (I experimented with MATHEMATICA's NSOLVE command) that if S and D are given, B is uniquely (apart from signs and complex conjugates) defined. Of course I can't prove it.
Sep
12
comment Matrix power problem
@Gerry - your question is very justified in the general case, where no variables are known at all (and where I express B in terms of S elements - that's the best I can do). J and D are mostly irrelevant to this question (except they restrict the form of B somewhat). In this special case, I usually solve for B for any sign combination of S.
Sep
11
asked Matrix power problem
Aug
14
accepted Are all commuting functions “the same”?