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visits member for 2 years, 5 months
seen Sep 8 at 2:35

Feb
27
asked Predicate vs function
Feb
27
comment Different definition of antipode for $SL_q(2)$?
Thanks. In Kassel, it is written that the comultiplication $\Delta$ of $M_q(2)$ equip $SL_q(2)$ with Hopf algebra structures. And the comultiplications seem to be the same, $\Delta (a)=a\otimes a+b\otimes c$, etc. I am really puzzled.
Feb
27
asked Why are the rational numbers an elementary substructure of the reals?
Feb
24
asked Different definition of antipode for $SL_q(2)$?
Feb
24
asked Quantum Groups: prove $U_1'\cong U[K]/(K^2-1)$ and $U\cong U_1'/(K-1)$
Feb
24
accepted disjoint union Topology question
Feb
6
asked disjoint union Topology question
Jan
23
asked Converse of Hopf Algebra Theorem
Jan
19
awarded  Promoter
Jan
19
comment Basis of $SL_q(2)$
@JulianKuelshammer thanks a lot. may i ask how is the topological group (denoted as $F_h(SL_2(\mathbb{C}))$ different from $SL_q(2)$?
Jan
17
accepted How to show that $SL_q(2)$ and $U_q(\mathfrak{sl}(2))$ are noncommutative and noncocommutative
Jan
17
revised Basis of $SL_q(2)$
added 1266 characters in body
Jan
16
asked Basis of $SL_q(2)$
Jan
16
accepted Tensor Product Question in Kassel's Quantum Groups
Jan
15
answered How to show that $SL_q(2)$ and $U_q(\mathfrak{sl}(2))$ are noncommutative and noncocommutative
Jan
12
awarded  Popular Question
Jan
12
accepted what is the difference between $\mathrm{SL}(2)$ and $\mathfrak{sl}(2)$?
Jan
9
asked Tensor Product Question in Kassel's Quantum Groups
Jan
8
asked How to show that $SL_q(2)$ and $U_q(\mathfrak{sl}(2))$ are noncommutative and noncocommutative
Jan
6
accepted $U_q$ Quantum group and the four variables: E, F, K, K^{-1}