anon
Reputation
62,469
398/400 score
 Jul 2 asked General relationship between braid groups and mapping class groups Jun 23 answered What does $(G:G')$ mean? Jun 16 answered Induction of an irreducible group representation Jun 12 answered Is the map $x\mapsto x^2+x$ uniformly continuous on $(0,\infty)$? Jun 6 answered Dirac delta function with a sum as the argument May 31 answered Couldn't there be a better definition of imaginary numbers? May 30 answered Finding explicit discrete valuation of ring of germs of analytic functions on $\mathbb{C}$ May 30 answered Extend isomorphism of subgroups to homomorphism of groups May 29 answered Maximal ideals of the ring of all continuous functions May 29 answered How continuity of $f$ and path-connectedness of $g$ results in $f\circ g$ to be path-connected? May 29 answered Show that the subset $\overline{I} = \{\overline{x}:x \in I\}$ is an ideal. May 26 answered The number of $3\times 3$ nilpotent matrices over $\mathbb{F}_q$ using the Orbit-Stabilizer theorem May 23 answered In $\mathbb Q_p$, proving every open ball is the disjoint union of more than one open ball May 23 answered Are binomial series multiplicative in their bases? May 22 answered Is $\mathbb{Q}(\pi) \cong \mathbb{Q}[[x]]/ \langle \sin(x) \rangle$? May 22 answered How to visualize $\mathbb{C}^2$? May 22 answered DVR, power series expansion. May 21 answered How to appreciate Fermat's last theorem? May 18 answered Show that $\mathbb{C} \otimes_\mathbb{Z} \mathbb{C} \cong \mathbb{C} \otimes_\mathbb{Q} \mathbb{C}$ May 17 answered Question about ideals of a ring: $IJ=I \implies J=I$?