Ask Ubuntu General Room

Normally: General discussion around Ask Ubuntu, Ubuntu & offic...
Jun 1, 2017 20:12
@ByteCommander thank you very much
Jun 1, 2017 19:53
hello, for having flash on firefox, is the recommendation provided in askubuntu.com/questions/562271/…, which directs to instructions on webupd8.org/2014/05/install-fresh-player-plugin-in-ubuntu.html, still up to date?
Feb 12, 2017 04:24
@NathanOsman thanks again! I'm heading off to bed then, bybye
Feb 12, 2017 04:22
it worked! good to know for next time. Interesting to note that I had use the same shell the first command was executed in, as the other would give me: "pid 2993 is not a child of this shell"
Feb 12, 2017 04:21
ok transfer is 95% done....
Feb 12, 2017 04:17
I've successfully fetched the PID. I'll try it now and see if it works
Feb 12, 2017 04:14
thank you very much!
Feb 12, 2017 04:14
that sounds like exactly what I need
Feb 12, 2017 04:13
ahah
Feb 12, 2017 04:12
yes
Feb 12, 2017 04:11
specifically I am currently transferring files using scp. I want it so that when file transfer 1 is done, file transfer 2 starts. Can I request something like that after transfer 1 was requested?
 

 Computer Science

General discussion for cs.stackexchange.com
May 29, 2017 16:02
thanks for the link
May 29, 2017 15:58
that makes a lot of sense
May 29, 2017 15:58
ah right
May 29, 2017 15:57
I've been running tests, that's pretty much what made it clear as to why the random pivot choice also had this pathological case
May 29, 2017 15:56
Java
May 29, 2017 15:54
also, thanks for your answer. I've been reading about it and am slowly understanding exactly what you've. Essentially, we do median of three because we want to get the median, but cant do it really efficiently, so settle on an "approximate" median based on three integers. correct?
May 29, 2017 15:53
film 2
May 29, 2017 15:53
from harry potter
May 29, 2017 15:53
it's ginny weasley
May 29, 2017 15:34
Hello, about quicksort median of three: I understand the logic of median of three for an already sorted array: it lets us pick the middle element, and thus avoid the worst case O(n^2). However, why do we do the median of three? What would be the problem with always picking the middle element? what is the advantage in sorting these three values?
May 21, 2017 12:56
proves that sleeping on it works like a charm¸ I've been stuck on this since last night!
May 21, 2017 12:56
I got it
May 21, 2017 12:56
nevermind
May 21, 2017 12:54
specifically, how can one prove that is it not regular, without setting restrictions on |y|? I find myself unable to pick any fitting words that would prove this
May 21, 2017 12:51
hello, I am having some trouble with the pumping lemma for regular languages, specifically for proving that the language $w \in \{a, b\}^∗ : w^R \neq w$ is not regular
 

 Mathematics

Associated with Math.SE; for both general discussion & math qu...
May 21, 2017 13:14
thank you very much
May 21, 2017 13:14
I didn't realise you could use the complement to prove the regularity of a language
May 21, 2017 13:13
alright
May 21, 2017 13:11
that is correct terminology
May 21, 2017 13:09
does this work "both" ways, as in if a language is not regular, its complementary is also logically not regular?
May 21, 2017 13:08
other than $|y| \geq 1$
May 21, 2017 13:08
without ever setting conditions on |y|
May 21, 2017 13:08
well, I don't see how to do it then
May 21, 2017 13:07
ok
May 21, 2017 13:07
$|xy| \leq m $
May 21, 2017 13:07
ah, no
May 21, 2017 13:06
well, if I understand correctly, the y would be b, or ab, or aab, etc
May 21, 2017 13:05
so, the language $ \{ w \in \{a,b\}^*: w^R \neq w \}$
May 21, 2017 13:04
reverse
May 21, 2017 13:03
then figured the language a^{m-1}ba^{m} should work: no matter how I pick the y, I will always end up removing the b (correct?)
May 21, 2017 13:02
but couldn't figure out how to do it without setting conditions on |y|
May 21, 2017 13:02
I had to prove that the language \{ w \in {a,b}^*: w^R \neq w \} was not regular
May 21, 2017 13:00
no worries
May 21, 2017 13:00
but sleeping on it must have solved it
May 21, 2017 13:00
I've been stuck on it since last night
May 21, 2017 13:00
thank you though
May 21, 2017 13:00
I actually just solved my problem
May 21, 2017 12:49
hello, I am having some trouble with the pumping lemma for regular languages, is anyone familiar with it?
May 19, 2017 21:31
Hey, is anyone familiar with the pumping lemma for regular languages?