Apr
1
awarded Yearling
Mar
14
awarded Nice Question
Feb
23
awarded Student
Feb
23
awarded Editor
Feb
23
revised Group elements fixed by all automorphisms
clarify a little
Feb
23
comment Group elements fixed by all automorphisms
What groups are these? The only non-abelian groups of order 12 are $D_6$ and $Dic_3$, whose centres have order 2, and $A_4$, which has centre of order 1 (by my calculation).
Feb
23
asked Group elements fixed by all automorphisms
Feb
23
awarded Caucus
Feb
13
awarded Popular Question
Nov
29
awarded Notable Question
Nov
16
comment javascript regular expression to match url
Then just remove the final \/ from the regexp. Or add a question mark just after it if you want it to be optional.
Oct
26
comment X/Html Validator in PHP
Just discovered that it now requires a User-Agent header to be set. So I've now got it setting one and it seems to work now.
Oct
26
comment X/Html Validator in PHP
@Gordon - This is doing the same as the regular HTML output - working through my browser but giving a 403 error when I try it through PHP.
Oct
26
comment X/Html Validator in PHP
I think I tried DOMDocument::validate but had problems with it. I forget what these problems were exactly - it was a while ago now. So I set up my PHP code to access the W3C validator (just file_get_contents with the URL of the validation result page) and it worked, but nowadays for some reason the W3C server is sending a 403 error back to my PHP script. Strange - the validator is still accessible through my web browser.
Oct
4
comment Riddle: 1 question to know if the number is 1, 2 or 3
That's very like the first solution I thought I'd found: "Does there exist a perfect number that is indivisible by your number?" But then I read the puzzle again - the girl knows EVERYTHING about these numbers, and as such, knows whether any odd perfect number exists even if nobody on our side of the fourth wall does.
Aug
31
comment Why do so many applications require permission to read the phone state and identity?
developer.android.com/reference/android/os/… gives a full list of target version identifiers and the changes in permissions (among other differences) between them.
Aug
31
comment How to stop "Make your phone more social" prompts?
@Al I don't see an app "Facebook Home", but I see a few services listed under the fb app: MediaUploadService, BackgroundDetectionService, MqttPushService.
Aug
31
comment How to stop "Make your phone more social" prompts?
@Jeffrey Before, Allow didn't seem to be doing anything, but now whenever I try it, it opens up Facebook to an error page "The page you requested cannot be displayed at the moment. It may be temporarily unavailable, the link you clicked on may be broken our expired, our you may not have permission to view this page."
Aug
31
comment How to stop "Make your phone more social" prompts?
@Jeffrey What would an app do over and above the built-in "Manage apps" facility?
Aug
29
awarded Great Question
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