bio | website | chemie.uni-hamburg.de/ac/AKs/… |
---|---|---|
location | Hamburg | |
age | 54 | |
visits | member for | 4 years, 5 months |
seen | May 24 at 17:16 | |
stats | profile views | 1,311 |
knot theory dilettant!
May 20 |
comment |
Fusion category R-symbols diagonal even when multiplicity present?
Also, regarding 3.3. of Galindo: Of course they are, but can you get BOTH Schur and braiding to be diagonal? (I assume the unitary case by default.) |
May 20 |
comment |
Fusion category R-symbols diagonal even when multiplicity present?
@Matthew - I know the Ostrik paper. But the data is OK - the Verlinde matrix V is symmetric, has V=V+ and VV=I, and it exists a diagonal matrix W such that (VW)^3=I. What is NOT the case is that W is cyclotomic. So F is not modular but still braided. Or do I confuse the many many fusion category bynames again? |
May 19 |
asked | Fusion category R-symbols diagonal even when multiplicity present? |
May 14 |
comment |
Not especially famous, long-open problems which anyone can understand
Arguably, the brick violates the "outside mathematician" condition. I even tried to convince some crank (may one say this word here? :-) not to waste as many of his lifetime to the problem as I did. |
May 12 |
comment |
Physics that needs “new” math
Calculus by Newton, how could I forget that? :-) Yes, that's the "canonical" answer (and my question can as well be closed). |
May 11 |
asked | Physics that needs “new” math |
May 5 |
comment |
“Prime” fusion rings
After reading Höhns webpage on modular categories etc. - yes, the concept "prime" seems to be known. |
May 5 |
comment |
Non Lie-group ribbon categories
That was a very detailed comment. Most of the papers I already have DLed (and I already suspected the "Haagerup" to be an example - maybe I somewhen compute the skein relation just for fun :-). THX and upped. |
May 5 |
accepted | Non Lie-group ribbon categories |
May 4 |
asked | Non Lie-group ribbon categories |
May 2 |
answered | Polynomial invariants for unoriented links |
Apr 26 |
accepted | “Diagonalizing” an associative algebra |
Apr 22 |
asked | “Diagonalizing” an associative algebra |
Apr 7 |
awarded | Nice Question |
Apr 1 |
revised |
“Epicycles” (Ptolemy style) in math theory?
Some extension |
Mar 31 |
comment |
“Epicycles” (Ptolemy style) in math theory?
@David: A hint I'm German :-) (Some theory within math, singular...) |
Mar 31 |
comment |
“Epicycles” (Ptolemy style) in math theory?
Upped this one because I can understand it most easily (and, as Todd said, Ptolemy was just an example by me - which I used because "epicycles" nowadays is used figuratively). |
Mar 31 |
accepted | “Epicycles” (Ptolemy style) in math theory? |
Mar 30 |
asked | “Epicycles” (Ptolemy style) in math theory? |
Feb 20 |
revised |
Maximum symmetry of generic 6j symbols?
Minor corrections |