Let $p<q$ be distinct prime numbers and $G$ be a group with $|G|=pq$
Nonabelian semidirect products of order $pq$?
My friend installed Windows 7 on his computer (upgrading from XP).  He wasn't sure if his processor supported x64 or not, so he installed the x86 version, just to be on the safe side.  After I looked it up, it turns out his processor does support x64, and now we want to upgrade.  The question is: is it possible to upgrade without completely re-installing the OS?  Can I? Or do I have to format the C: partition again? Suppose you have an object with zero for the value of all the derivatives of position. In order to get the object moving you would need to increase the value of the velocity from zero to some finite value. A change is velocity is acceleration, so the value of the acceleration would have to increase from zero to some value. You would also need to increase the jerk from zero to some value to have a change in acceleration.  Is there an infinite series of higher derivatives of position for this to work? Or am I missing something? There is a sentence:     No sooner had he sat down than he fell asleep.   I just do not understand, is this an inversion? And if so, I still do not understand the sentence. How to insert a very large number of records into a MySql database as fast as possible A list of inconveniences between quantum mechanics and (general) relativity? How do I remove hidden backup files? I have files ending in ~ in my home directory, and I want to delete them. How do I do that? How do I prevent this backup functionality? What is the difference between a builtin command and one that is not? Create file and its parent directory I know that touch command creates a file:  touch test1.txt   but how I can create a file and its full path?  for example my desktop contains nothing:  ~/Desktop/$ ls ~/Desktop/$   and I want to create 1.txt in ~/Desktop/a/b/c/d/e/f/g/h/1.txt. Can I do this with a simple command like:  $ touch ~/Desktop/a/b/c/d/e/f/g/h/1.txt   instead of create full path manually and then create the file? What's the Best Way to Shuffle an NSMutableArray? If you have an NSMutableArray, how do you shuffle the elements randomly?  (I have my own answer for this, which is posted below, but I'm new to Cocoa and I'm interested to know if there is a better way.)    Update: As noted by @Mukesh, as of iOS 10+ and macOS 10.12+, there is an -[NSMutableArray shuffledArray] method that can be used to shuffle. See  for details. (But note that this creates a new array, rather than shuffling the elements in place.) Changing password? I would like to change my password.  I have followed the instructions in  but I cannot find the "my logins" hyperlink. What kind of ring $R$ makes $\mathcal O(\mathrm{Proj}\,R[x_0,\cdots,x_n])=R$? Taking the second derivative of a parametric curve Lattices are congruence-distributive How to design the attack class in an RPG game? The equivalence of open-set definition of continuous mappings to the $\epsilon-\delta$ definition Suppose $n$ is an even positive integer and $H$ is a subgroup of $\mathbb Z/n \mathbb Z$. Prove that either every element of $H$ is... What can cause "Android OS" process to use high percentage of battery? Elysia cron module does not execute cron job automatically I have installed the elysia cron module and setup the cron job. My module has a cron function test_cron() which inserts some data into a table.  This function lists in the elysia cron status page. I have setup the the default scheduled rule to */1 * * * * to run the cron after every minute.  When I click on the run infront of the test_cron() the cron runs and some data inserts into the database.  But this the manual method, I want to execute the cron after every minute therefore I defined the scheduled time for the test_cron(),  but it does not executed automatically after every minute.  What should I do? Is there any other configuration which I should do to run the cron automatically? Test of whole distribution for two samples Why are local variables not initialized in Java?