Reputation
47,332
Next tag badge:
392/400 score
96/80 answers
Badges
4 72 163
Newest
 Nice Answer
Impact
~824k people reached

May
9
reviewed Reject and Edit When is $2$ a quadratic residue mod $p$?
Apr
17
reviewed Approve convergent series and divergent series
Apr
16
reviewed Reject Given $\lvert \vec u \rvert, \lvert \vec v \rvert$, and $\angle(\vec u, \vec v)$, calculate $\cos \angle(\vec u + \vec v, \vec u - \vec v)$.
Apr
13
reviewed Looks OK How can “$y = \sqrt{-x}$ ” be sketched on the x-y plane?
Apr
13
reviewed Leave Closed Evaluate the following series using elementary methods.
Apr
4
reviewed Reviewed Model Theory, Proof Theory, Set Theory, Recursion Theory: Where to begin?
Apr
4
reviewed Reviewed Show that the Julia set of a function is a Cantor set
Apr
4
reviewed Approve Trying to calculate the integral limit $\lim_{n\rightarrow\infty} \int_{-\sqrt n}^{\sqrt n}\left (1 - \frac{x^2}{2n}\right)^ndx$
Apr
3
reviewed Leave Closed Water Density and Fluid Force (question below)
Mar
26
reviewed Reviewed Calculus without functions (or, how did Newton differentiate?)
Mar
25
reviewed Approve Evaluating $\sum_{\gcd\left(m,n\right)=1}\frac{1}{m^2n^2}$
Mar
23
reviewed Close What is an Isomorphism: Linear algebra
Mar
22
reviewed Close Recommended topics for Chemical Engineering grad.
Mar
22
reviewed Close Mathematical Background for Computer Vision
Mar
22
reviewed Close Ray line intersection question
Mar
21
reviewed No Action Needed Taking the limit of the sum of approximating rectangles
Mar
21
reviewed Leave Open Define $f:\mathbb{R}\to\mathbb{R}$ as follows:$\ldots$
Mar
15
reviewed Leave Open How to effectively study math?
Mar
8
reviewed Leave Open The Best of Dover Books (a.k.a the best cheap mathematical texts)
Mar
8
reviewed Leave Open Proof that $\mathbb{Z}[\sqrt{-5}]$ is integrally closed