Reputation
11,288
Top tag
Next privilege 15,000 Rep.
Protect questions
Badges
2 12 38
Impact
~139k people reached

Mar
15
awarded  Notable Question
Mar
11
revised Bijective proof of $ \sigma_0(m) \,\sigma_0(n) = \sum_{r | (m,n)} \sigma_0( mn / r^2) $?
edited title
Mar
11
revised Bijective proof of $ \sigma_0(m) \,\sigma_0(n) = \sum_{r | (m,n)} \sigma_0( mn / r^2) $?
added 2 characters in body
Mar
11
asked Bijective proof of $ \sigma_0(m) \,\sigma_0(n) = \sum_{r | (m,n)} \sigma_0( mn / r^2) $?
Mar
9
revised Simplify Product of sines
added 510 characters in body
Mar
9
answered Simplify Product of sines
Mar
4
revised Why is $1 - \frac{1}{1 - \frac{1}{1 - \ldots}}$ not real?
added 188 characters in body
Mar
4
comment Why is $1 - \frac{1}{1 - \frac{1}{1 - \ldots}}$ not real?
Notice that $n \geq 2$. In this guy's example $n \equiv 1$.
Mar
4
answered Why is $1 - \frac{1}{1 - \frac{1}{1 - \ldots}}$ not real?
Mar
2
revised Show that $ \sum_{\mathbb{Z}/N\mathbb{Z}} f(n) g(n+r)h(n+2r) = \sum_{a \in \mathbb{Z}/N\mathbb{Z}} \hat{f}(a)\hat{g}(-2a)\hat{h}(a)$
partial progress
Mar
2
asked Show that $ \sum_{\mathbb{Z}/N\mathbb{Z}} f(n) g(n+r)h(n+2r) = \sum_{a \in \mathbb{Z}/N\mathbb{Z}} \hat{f}(a)\hat{g}(-2a)\hat{h}(a)$
Feb
7
comment Show that $J_n(x)$ satisfies Bessel equation $ x^2 \frac{d^2 y}{dx^2} + x \frac{dy}{dx} + (x^2 - n^2)y = 0 $
also math.stackexchange.com/questions/359107/…
Feb
7
asked Show that $J_n(x)$ satisfies Bessel equation $ x^2 \frac{d^2 y}{dx^2} + x \frac{dy}{dx} + (x^2 - n^2)y = 0 $
Feb
6
answered Representing a linear operator on $V$ with an element of $V \otimes V^*$
Feb
4
accepted How to derive $\sum_{n=0}^\infty 1 = -\frac{1}{2}$ without zeta regularization
Jan
29
accepted Does $\overline{ \sqrt{1 + i}} = \sqrt{1-i} \ $?
Jan
29
comment Does $\overline{ \sqrt{1 + i}} = \sqrt{1-i} \ $?
The paper that I am reading is unusual as they are cutting along $\mathbb{R}^+$ instead of $\mathbb{R}^-$ I should have mentioned that thanks.
Jan
29
comment Does $\overline{ \sqrt{1 + i}} = \sqrt{1-i} \ $?
what if you cut at positive reals?
Jan
29
asked Does $\overline{ \sqrt{1 + i}} = \sqrt{1-i} \ $?
Jan
26
answered If $[x+0.19] +[x+0.20] +[x+0.21] +\cdots [x+0.91] =546$ find the value of $[100x]$..