MyUserIsThis
Reputation
2,558
Top tag
Next privilege 3,000 Rep.
 Mar 31 revised Finding the indefinite integral $\int\frac{\sqrt{x+8}}{\sqrt{x-3}-\sqrt{x+3}}dx$ edited body Mar 31 comment Finding the indefinite integral $\int\frac{\sqrt{x+8}}{\sqrt{x-3}-\sqrt{x+3}}dx$ I multiplied by what I said. $x=0$ is not part of the domain of that function becuase there's a $\sqrt{(x-3)}$ Mar 31 answered Finding the indefinite integral $\int\frac{\sqrt{x+8}}{\sqrt{x-3}-\sqrt{x+3}}dx$ Mar 28 answered Find a $2$ by $3$ system $Ax=b$ whose general solution is… Mar 26 comment Proof of the optimality of A* algorithm In questions like this, you should always post a link to the paper,... the question is not general enough to consider that self-contained, plus you're referring to a particular proof Mar 25 awarded Informed Mar 24 comment Are there any geometric interpretations to uniform continuity? @JulienClancy Yes, I actually think that is the best thing of mathematics (when outcomes of formality that looked like the intuitive thing at first, are so weird) Mar 24 comment Are there any geometric interpretations to uniform continuity? @JulienClancy Although we always have this pathologic (very interesting) cases, I think that intuitive interpretations for this things are important too. Mar 22 accepted Arithmetic progression topology Mar 22 comment Arithmetic progression topology @kahen Thanks, I'll read about it. Mar 22 asked Arithmetic progression topology Mar 22 comment How did Euler prove the Mersenne number $2^{31}-1$ is a prime so early in history? They didn't compute every single possibibility, like we would do with a computer nowadays. Note that some mersenne numbers were found before smaller ones. For example, $M_{127}$ was found to be prime before $M_{61}$, $M_{89}$ and $M_{107}$. So they probably did it in a different way. Read this: en.wikipedia.org/wiki/Mersenne_prime for some primality tests on mersenne numbers. Mar 22 accepted Are these open sets? Mar 22 comment Are these open sets? Thanks for the different approach. Really simple proof. Thanks again! I'm accepting this answer (all 3 were just perfect, there's no really reasonable reason for that) Mar 22 comment Are these open sets? Thanks, so that's really what I did in my EDIT part of the question, plus for unbounded sequences of $b_i$. Mar 22 comment Are these open sets? @FrankMcGovern You opened my eyes :) Thanks! Mar 22 asked Are these open sets? Mar 16 revised ZF+Induction is Inconsistent? change epislons to ins for better understandings Mar 16 comment ZF+Induction is Inconsistent? @RussellEasterly Then I've proposed an edition, the $\LaTeX$ for $\in$ is \in Mar 16 suggested approved edit on ZF+Induction is Inconsistent?