« first day (2708 days earlier)      last day (425 days later) » 

 
3 hours later…
4:21 AM
$\varheart$
 
 
10 hours later…
1:51 PM
$a\substack{a\\b}b$
$a\stack{a\\b}b$
$a\begin{matrix}\not\subseteq\\ \not\supseteq\end{matrix}b$
 
 
3 hours later…
5:19 PM
1 message moved to Trash
1 message moved to Trashcan
 
6:07 PM

 Linear & Abstract algebra

For any discussion concerning linear, abstract or even element...
Hmm.... I wonder why the same thing was not oneboxed when posted here.
 

« first day (2708 days earlier)      last day (425 days later) »