Gamamal
Reputation
26,038
95/100 score
 Mar4 revised Hard Olympiad Proof Problem added 50 characters in body Mar4 answered discrete family of sets Mar4 answered The characteristics of a subfield of a field is same as that of the field. Mar4 comment Interesting number theory question(divisibility) Oh yeah, the other one is for quadratic residues right? Thank you. Mar4 revised Interesting number theory question(divisibility) added 3 characters in body Mar4 answered Hard Olympiad Proof Problem Mar4 answered Interesting number theory question(divisibility) Mar4 asked Every closed subset of $\mathbb R^2$ is the frontier of a set? Mar4 awarded algebra-precalculus Mar4 awarded discrete-mathematics Mar4 comment $\mathbb Z_p^*$ is a group iff $p$ is prime oh yeah. thanks. Mar4 revised $\mathbb Z_p^*$ is a group iff $p$ is prime edited body Mar4 comment online courses and books covering the theory of cellular automata mathoverflow.net/a/157025/24478 Mar4 comment The Square Root of a Positive Irrational is Irrational Good point, I changed it for $o$. thanks. Mar4 revised The Square Root of a Positive Irrational is Irrational edited body Mar4 comment $\mathbb Z_p^*$ is a group iff $p$ is prime yeah, I forgot to add the asterisk. Thanks for noticing. Mar4 answered $\mathbb Z_p^*$ is a group iff $p$ is prime Mar4 answered The Square Root of a Positive Irrational is Irrational Mar4 answered Orders, Groups, and Cyclic Groups Mar3 comment How to tell where parentheses go in functional notation? It looks like it is $f(z)=\ln(r)+i\theta$. Because otherwise the lack of parenthesis is inexcusable.