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Don't have much time these days...


3h
awarded  Enlightened
3h
awarded  Nice Answer
18h
revised Reduction from Hamiltonian cycle to Hamiltonian path
deleted 104 characters in body
1d
awarded  Enlightened
2d
revised Simple Number Theory Question
edited tags
May
19
answered Prove that $(1+1/x)^x$ is concave for $x>0$
May
19
comment How to find area of triangle from its medians
Thanks! I see it now :-) +1.
May
19
comment How to find area of triangle from its medians
What right triangle? Can you please elaborate?
May
19
revised Generalizing $\sum \limits_{n=1}^{\infty }n^{2}/x^{n}$ to $\sum \limits_{n=1}^{\infty }n^{p}/x^{n}$
added 6 characters in body
May
19
comment Closed form for n-th anti-derivative of $\log x$
You can add an arbitrary $(n-1)^{\text{th}}$ degree polynomial...
May
19
comment Closed form for n-th anti-derivative of $\log x$
@Argon: Even though I cast a close vote, I now believe it is slightly different, as the $H_n$ term becomes important for $\log x$, but not for $\frac{1}{x}$.
May
19
comment How to find area of triangle from its medians
You can also use Appolonius theorem.
May
18
comment Using the hypothesis $\frac{1}{a}+\frac{1}{b}+\frac{1}{c}=\frac{1}{a+b+c}$ to prove something else
@cruise: I say it is pointless because there is essentially no non-trivial mathematical content there. Anyway, you are entitled to your opinion, as I am mine (and so do the other downvoters/upvoters). I only commented because you seemed interested to know why you got downvotes. I tried to give you the reason why I gave a downvote. Let's leave it at that. It is clear that there won't be an agreement. (btw, you seem to conveniently choose to ignore the 5 downvotes and talk about the solitary upvote you got :-)).
May
18
revised Find the minimum of $q$.
edited tags
May
18
comment Using the hypothesis $\frac{1}{a}+\frac{1}{b}+\frac{1}{c}=\frac{1}{a+b+c}$ to prove something else
@cruise: I gathered that for the previous comments. But really, the interpretation you chose is quite pointless.
May
17
revised why is $\sum\limits_{k=1}^{n} k^m$ a polynomial with degree $m+1$ in $n$
added 12 characters in body
May
17
answered Identity with Bernoulli numbers: $\sum\limits_{k=1}^{n}k^p=\frac{1}{p+1}\sum\limits_{j=0}^{p}\binom{p+1}{j}B_j n^{p+1-j}$
May
17
revised Integrate: $\int_0^{\infty} \frac{\sin (ax)}{e^{\pi x} \sinh(\pi x)}dx$
edited tags
May
17
answered Using the hypothesis $\frac{1}{a}+\frac{1}{b}+\frac{1}{c}=\frac{1}{a+b+c}$ to prove something else
May
17
comment Using the hypothesis $\frac{1}{a}+\frac{1}{b}+\frac{1}{c}=\frac{1}{a+b+c}$ to prove something else
-1: The interpretation in this answer is nonsensical. Sorry.