6,145 reputation
623
bio website mrcactu5.herokuapp.com/…
location New York, NY
age 30
visits member for 4 years
seen 13 hours ago

Data Scientist @ Explorer Media


Dec
12
revised Set of the form $m + n \alpha $ is bounded by $0$?
added 11 characters in body
Dec
12
revised Set of the form $m + n \alpha $ is bounded by $0$?
added 1028 characters in body
Dec
12
answered Set of the form $m + n \alpha $ is bounded by $0$?
Dec
11
asked sum of divisors function $\sum \tau(n) = \frac{1}{4}$
Dec
9
accepted inversion of the circle $t \mapsto (3 + is) + e^{it} $ around the unit circle.
Dec
9
answered inversion of the circle $t \mapsto (3 + is) + e^{it} $ around the unit circle.
Dec
9
revised inversion of the circle $t \mapsto (3 + is) + e^{it} $ around the unit circle.
mistake in the algebra
Dec
9
asked inversion of the circle $t \mapsto (3 + is) + e^{it} $ around the unit circle.
Dec
9
awarded  Caucus
Dec
7
revised estimating the roots of $ \epsilon z^n + p(z)$
make his response slightly more accurate.
Dec
7
revised estimating the roots of $ \epsilon z^n + p(z)$
added 164 characters in body
Dec
7
asked estimating the roots of $ \epsilon z^n + p(z)$
Dec
5
revised Prove that there exists a point $c$ such that $f''(c)\ge 4$
added 936 characters in body
Dec
5
answered Prove that there exists a point $c$ such that $f''(c)\ge 4$
Dec
4
asked Can inequality $-1<(x-\tfrac{1}{2})^2 - 3 (y-\tfrac{1}{2})^2 < 1$ be solved with continued fractions?
Dec
4
comment What is a concrete example to demonstrate that $\mathcal{O}_{\mathbb{Q}(\sqrt{-19})}$ is NOT a norm-Euclidean domain?
math.stackexchange.com/questions/23844/…
Dec
4
comment Nice proof that $\mathbb{Z}[\sqrt{6}]$ is a Euclidean domain wrt absolute norm map
A modern device for quadratic forms is the topograph as discussed by Ch 2 of Topology of Numbers by Allen Hatcher
Dec
4
comment Nice proof that $\mathbb{Z}[\sqrt{6}]$ is a Euclidean domain wrt absolute norm map
It's common to talk about $|x^2 - 6y^2 |< 1$ as a sphere even though the interior of a hyperbola. One could solve Pell's equation $x^2 - 6y^2 = 1$ by finding the continued fraction expansion of $\sqrt{6}$, which is periodic. Maybe we can use continued fractions to solve $|(x-a)^2-6(y-b)^2 |< 1$.
Dec
4
comment How to arrange 3 rectangles in a big rectangle
I don't understand $40^2 + 40^2 + 10^2 = 3300 < 10000 = 100^ 2$, so it's not possible to giver the big rectangle with three smaller rectangles.
Dec
4
revised Nice proof that $\mathbb{Z}[\sqrt{6}]$ is a Euclidean domain wrt absolute norm map
added 670 characters in body