 Scientific Computing on AMD CPUs?
 Why replicating the higher bits of RGB565 when converting to RGBA8888?
 Attempting to connect to VPN
 Broadcom 4360 Wifi (2013 MacBook Air) on Juno?
 Default browser can't play youtube videos in full HD
 Could the President abolish the Supreme Court?
 Could the Senate abolish the Supreme Court?
 My friend needs me to act as a current landlord
 Hagrid, a kind giant
 The Atlas Continuity Issue
 For civiEvents in a Drupal View, how to display only one of a repeating event?
 Issue with CiviMail changing hyperlink urls, causing error at resulting link on iphone but not other devices
 What should I do about this cap iron japanning?
 I am really really trying to find the name of this artist and all i can remember is a few music videos
 I'm not sure how to solve this problem(student question)
 What is the script function to select Solid Body in ANSYS Design Modeler?
 Vacuum Rated Sharpie Or Dry Erase Marker/Board?
 What is the limiting factor for a plant's growth?
 What the federal government can do if a state or town became a dictatorship?
 I need flying cities!
Am I on the right track to proving this statement about composite function?
Let $S = \{1,2,3,4\}$. Let $F$ be the sets of all functions from $S$ to $S$.
Now I think this statement is true:
$\forall f \in F , \exists g\in F$ so that $(g \circ f)(1) =2$
I suppose $f \in F$, and I need to show that $\exists g\in F$ so that $(g \circ f)(1) = 2$
Do I just make an example of $g$ so that $(g \circ f)(1) = 2$ ?
Like $f(1) = y$ and then $g (y)=2 ?
You could simply design a function $g$ such that $g(x)=2$ for all $x\in S$. Now since $f\in F$, we know $f(1)\in S$, hence the composition is 2. As f is arbitrary, we have the desired result.
Yes, you just define a function $g$ which takes $f(1)$ to $2$ and then define the rest if images to make $g$ a well defined function from $S$ to $S$

You could simply design a function $g$ such that $g(x)=2$ for all $x\in S$. Now since $f\in F$, we know $f(1)\in S$, hence the composition is 2. As f is arbitrary, we have the desired result.
20180318 23:40:01 
Yes, you just define a function $g$ which takes $f(1)$ to $2$ and then define the rest if images to make $g$ a well defined function from $S$ to $S$
20180319 00:30:22