Mathematics

Associated with Math.SE; for both general discussion & math qu...
Jul 17, 2015 02:10
It unfortunately answers a different question than the one asked, and it has already misled one person. I feel bad about this.
Jul 17, 2015 02:10
Dear moderators, could you please delete my accepted answer here: math.stackexchange.com/questions/1058658/…
Jul 9, 2015 05:22
Nevertheless, having multiple misspellings in every sentence makes a bad impression. For example, people are more likely to answer questions that are well-edited, etc. Your writing is the only window we have into you as a person, after all.
Jul 9, 2015 05:18
What browser do you use?
Jul 9, 2015 05:17
But presumably you are not using Atom to compose your messages here? There are spellcheckers for browsers that will help you do that.
Jul 9, 2015 05:16
Are you aware that many browsers and operating systems offer spellchecking tools?
Jul 9, 2015 05:06
Anyone here handy with Riemannian geometry? I'm having trouble calculating the expression for a geodesic equation.
Jun 30, 2015 23:49
Thank you.
Jun 30, 2015 23:46
This is clearly true because the intersection of any collection of closed sets is closed, yes?
Jun 30, 2015 23:45
The book I'm reading puts the qualifier "finite" on that statement (not "infinite") so I'm wondering if I'm missing something.
Jun 30, 2015 23:44
Easy question: the common zero set of an infinite number of continuous functions mapping to R is closed, right?
Jun 29, 2015 20:14
Take the Cantor set on [0,1]. Its complement is open, and the indicator function of this open set is not Riemann integrable, correct?
Nov 12, 2014 06:06
Are there any moderators about? A user is causing trouble.
Jul 19, 2014 20:35
No, fortunately you cannot see anything there.
Jul 19, 2014 20:33
My link is the same as Daniel's.
Jul 19, 2014 20:33
It looks like someone just took care of it, but a new user posted porn in response to a question here:math.stackexchange.com/questions/872015/…
Jul 19, 2014 20:32
@robjohn Hey, are you around?
Jul 19, 2014 20:31
Any moderators around? We have an emergency.
Dec 18, 2013 01:15
Thanks!
Dec 18, 2013 01:15
@robjohn Someone is posting intentionally nonsense questions and answers. Could you please do something about this? math.stackexchange.com/users/115389/dr-terence-b-allen
Dec 14, 2013 04:52
You can do analysis over more complication algebras, but it's really icky, if I recall correctly.
Dec 14, 2013 04:51
Nothing good comes of separating things out like that.
Dec 14, 2013 04:51
That's a bad question, Mike!
Dec 14, 2013 04:42
@TedShifrin You have no questions!
Dec 14, 2013 04:42
@Mike Thanks!
Dec 14, 2013 04:42
Hey, do you any of you know of some good unanswered questions that are worthy of a bounty? I'm in a bountying mood tonight.
Dec 10, 2013 07:12
@T.Bongers Just noticed your location. Are you planning on working with Volberg?
Dec 9, 2013 07:36
This is clearly not his/her first rodeo.
Dec 9, 2013 07:36
@anon Do you know which old user Post No Bills is?
Dec 9, 2013 07:31
Huh. I guess there's all sorts of MSE inside baseball I'm missing.
Dec 9, 2013 07:29
@anon Questions got bulk-deleted?
Dec 9, 2013 07:28
@robjohn Thanks.
Dec 9, 2013 06:33
In what context did someone say, "If you don't like that answer, you will not improve"?
Dec 9, 2013 06:31
Why?
Dec 9, 2013 06:31
Normative language?
Dec 9, 2013 06:27
@EricStucky Yes. Check his profile blurb.
Dec 9, 2013 06:27
Sorry.
Dec 9, 2013 06:26
@anon Yes, my connected dropped for a second.
Dec 9, 2013 06:25
@robjohn I have a moderation concern. This user is vandalizing their answers: math.stackexchange.com/users/17762/user17762?tab=activity
Dec 9, 2013 06:21
@robjohn I have a moderation concern. This user is vandalizing their answers: math.stackexchange.com/users/17762/user17762?tab=activity
2
Dec 9, 2013 06:19
This user is vandalizing his/her answers:math.stackexchange.com/users/17762/user17762?tab=activity
Dec 9, 2013 06:19
Any moderators present?
Nov 28, 2013 07:45
I commented and notified the answerer, but nothing was done.
Nov 28, 2013 07:45
Hi all. What should I do when an accepted answer is wrong?
Oct 16, 2013 02:01
I agree it looks fine in questions. Without the Courier font it's much less offensive.
Oct 16, 2013 02:00
Oh, sure. It's just something I've never seen elsewhere, and it seems very out of place to me. Just registering my displeasure.
Oct 16, 2013 01:58
It looks very weird. Why not use quote marks? That's what they're there for.
 
Jul 6, 2015 20:27
Right, that works. I'm wondering if there's a way to see it without appealing to the diagonalization, though. (Because if you're going to diagonalize, why not just do that in the first place and be more explicit?)
Jul 6, 2015 20:27
Honest question: Must a self-adjoint operator with $1$ as the only point in its spectrum be the identity?
Jul 6, 2015 20:27
I see what you're trying to do, but is this enough? All you've shown is that the spectrum of the limit is just $1$, which I don't think uniquely characterizes the identity. Or does it?