bio | website | people.virginia.edu/~deh4n |
---|---|---|
location | ||
age | ||
visits | member for | 4 years, 6 months |
seen | Jun 24 '13 at 17:02 | |
stats | profile views | 722 |
Jun 22 |
awarded | Nice Answer |
Nov 8 |
awarded | Yearling |
Jun 25 |
awarded | Revival |
May 1 |
comment |
Notation for substructure, especially for permutations?
Have your read the first chapter of Kleshchev's "Linear and projective representations of symmetric groups"? This reminds me of ideas of Okounkov & Vershik front.math.ucdavis.edu/0503.5040. |
May 1 |
revised |
Projective modules over Lie (super) algebras
deleted 10 characters in body |
May 1 |
comment |
Plethysm of $\mathrm{QSym}$ into $\mathrm{QSym}$: can it be defined?
Well, $f\circ(g+h)=\sum(f_{(1)}\circ g)(h\circ f_{(2)}$ fixes this, and seems like a more natural formula anyway. |
Apr 27 |
comment |
permutation representation of $S_n$
This is precisely the construction I linked to above. |
Apr 25 |
revised |
Projective modules over Lie (super) algebras
added 209 characters in body |
Apr 24 |
answered | Projective modules over Lie (super) algebras |
Apr 22 |
comment |
Projective modules over Lie (super) algebras
Do I understand correctly that $G_0$ is just a finite dimensional Lie algebra? |
Apr 16 |
answered | permutation representation of $S_n$ |
Apr 11 |
comment |
Name for algebra and its tensor products
I don't know if this is helpful, but when $n=2$, $U_1$ can be written in terms of $U_0$, so we can regard the algebra as a quotient of a polynomial algebra: $k[x]/\langle x(x^3-4x^2+2x-1)\rangle$. Perhaps it would be easier for someone to recognize this algebra. |
Apr 9 |
comment |
Name for algebra and its tensor products
How do I interpret your relation when $j=1$ or $n$? |
Mar 11 |
comment |
Why are there two Hopf algebra structures on a Kac--Moody Algebra.
Chari-Pressley's text is good. |
Mar 5 |
answered | character formula for demazure modules |
Feb 26 |
comment |
Reference request on symmetric polynomials
Doesn't setting $x_j=-1$ just change the coefficient of $e_{k-1}$ to $-1$ (same for $e_{n-1}$. In that case, setting one $x_j=-1$ gives you -1 in (1). |
Feb 26 |
answered | Reference request on symmetric polynomials |
Feb 25 |
accepted | A question on Lusztig's `graph with automorphism' construction? |
Feb 25 |
comment |
A question on Lusztig's `graph with automorphism' construction?
Thanks, Peter! Yeah, I guess that is obvious. |
Feb 24 |
revised |
A question on Lusztig's `graph with automorphism' construction?
improved presentation |