Reputation
4,262
Next privilege 5,000 Rep.
Approve tag wiki edits
Badges
8 29
Impact
~75k people reached

Jun
25
answered Is it possible to work out the derivative of $e^x$ using the summation definition of $e = \sum_n 1/n!$?
Apr
22
awarded  Popular Question
Feb
20
awarded  Popular Question
Feb
5
awarded  Popular Question
Jan
30
awarded  Yearling
Sep
24
awarded  Autobiographer
Sep
8
awarded  Popular Question
Jul
2
answered How can I prove that $2^{n+2}\mid(2n+3)!$?
Jul
2
awarded  Curious
Jul
2
awarded  Inquisitive
Jun
14
awarded  Nice Question
Jun
12
awarded  Popular Question
Apr
16
awarded  Benefactor
Apr
16
accepted Showing the set $A+B$ is closed.
Apr
16
comment Showing the set $A+B$ is closed.
ok thanks! that was really cool. I didnt know much about embeddings.
Apr
15
comment Combinatoric Graph
Yes, although you are missing $\{a,b,c\}$. Then for each one draw a point and which do you connect to which?
Apr
15
comment Combinatoric Graph
First step: What are the subsets of $\{a,b,c\}$?
Apr
15
answered Isomorphisms between finite abelian groups and cyclic groups
Apr
10
asked Showing the set $A+B$ is closed.
Apr
9
answered a group of order $9$ is abelian