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Feb
5
comment The Weyl group of E8 versus $O_8^+(2)$
Yep - the kernel of $W \rightarrow O(\bar \Omega, N)$ is $\{ \pm 1 \}$.
Feb
4
revised The Weyl group of E8 versus $O_8^+(2)$
Hedged a bit due to confusions on notation.
Feb
4
comment The Weyl group of E8 versus $O_8^+(2)$
Incidentally, the notation issues with finite simple groups of Lie type in type $D$ are bemoaned at en.wikipedia.org/wiki/Group_of_Lie_type#Notation_issues.
Feb
4
revised The Weyl group of E8 versus $O_8^+(2)$
added 23 characters in body
Feb
4
answered The Weyl group of E8 versus $O_8^+(2)$
Jan
26
awarded  Yearling
Dec
21
awarded  Nice Question
Nov
23
awarded  Popular Question
Oct
19
comment Effective bound of $L(1,\chi)$
Thanks very much -- that's perfect!
Oct
18
asked Effective bound of $L(1,\chi)$
Oct
17
awarded  Nice Answer
Jul
26
comment Is the twisted symmetric fifth power $L$-function holomorphic?
@7-adic: Nope -- $Sym^5$ and higher are out of range of Langlands-Shahidi. Basically getting up to $Sym^4$ requires some special cases of Levi subgroups in exceptional groups, and sadly the special cases run out. Garland has a long-term program to try to extend these methods to infinite-dimensional groups -- if one is allowed to use Kac-Moody groups, one could go further. But alas, the results in that direction are not nearly strong enough for $Sym^5$ L-functions as far as I know.
Jul
7
comment Why is there a $\sqrt{5}$ in Hurwitz's Theorem?
My favorite proof is in Ford's aptly titled article "Fractions" (Amer. Math. Monthly, Vol 45, No 9 (Nov 1938)). He gives the "Ford circle" proof of Dirichlet's approximation theorem, and the $\sqrt{5}$ comes straight out of the geometry he uses. So, if "visual" suffices for "intuitive," this might suffice for your needs.
May
21
awarded  Nice Answer
Feb
24
comment $ n $-Cats-in-a-Bed Problem: Picking $ n $ points in a given planar domain to maximize the sum of their pairwise distances
In the case n=2, a Google image search indicates that pairs of cats in a bed tend not to maximize their pairwise distance. This may be a case of sampling bias however.
Feb
23
comment $ n $-Cats-in-a-Bed Problem: Picking $ n $ points in a given planar domain to maximize the sum of their pairwise distances
When $n=1$, the solution can be found at sleepingcatsw.com/images/cats/luther_bed.jpg
Jan
26
awarded  Yearling
Nov
16
comment Weil index computation, p-adic integral
These computations should be straightforward, using the explicit formulas of Ranga Rao. See the appendix of "On some explicit formulas in the theory of the Weil representation" in Pacific J. of Math., Vol. 157, No. 2, 1993.
Nov
3
comment What are the higher homotopy groups of a K3 suface?
A new entry in the encyclopedia of integer sequences, perhaps?
Oct
28
comment Visibility interpretation of Riemann zeta zeros on the critical line?
You forgot to mention, the fraction of $\mathbb Z$ lattice points visible from the origin is $1 / \zeta(1) = 0$.