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Brazilian student of master's degree in mathematics at Unicamp
Showing that a function is discontinuous
asked Sep 23 '16 at 19:13
Kernel of the diagonal homorphism $f:B\otimes_A B\rightarrow B$
asked Feb 26 '18 at 19:18
$X$ is locally compact, show that $A$ is open in $X$ iff $A\cap K$ is open in $K$ for all $K$ compact in $X$.
asked Jun 25 '17 at 22:23
If $T^m$ is diagonalizable for a $m\in\mathbb N$, then $T$ is diagonalizable.
asked Jul 7 '17 at 17:09
If $|a|=2$ for all $a \in G$, then why is $abab=e$?