10,511 reputation
22251
bio website gottwurfelt.wordpress.com
location Atlanta, GA
age 31
visits member for 4 years, 6 months
seen 6 hours ago

Data scientist and math blogger.


Jan
10
reviewed Close function is continuous iff its composition with a curve is continuous
Jan
10
reviewed Leave Open How can I prove $\lim_{x\rightarrow \infty } \tan^{-1}(1+\sqrt{2}x)=\pi /2$
Jan
10
reviewed Close An Application: The Stone-Cech Compactification
Jan
10
reviewed Leave Open Solutions of $x(\ln x)^2=e$
Jan
10
awarded  Custodian
Jan
10
reviewed Close Show that the product is a perfect square
Jan
10
reviewed Leave Open Eigenvalue problem in functional analysis?
Jan
10
reviewed Leave Open comparing Betti numbers
Jan
10
reviewed Leave Open simplification of trig identities math check
Jan
9
answered Is there a reason of $\cos(11x)+\sin(11(x+1))\approx 0$
Jan
9
comment Visually stunning math concepts which are easy to explain
The basic idea is pretty simple: ${i \choose k} = {i \choose k-1} + {i-1 \choose k-1}$, and this recurrence holds $\mod p$ as well.
Jan
9
comment Visually stunning math concepts which are easy to explain
I'd also note that it's possible to compute ${i \choose k} \mod p$ without computing $i \choose k$. For large $i$ this would matter.
Jan
9
reviewed Leave Open Projection onto U through V
Jan
8
awarded  Good Answer
Jan
7
answered Distinct ways three integers can sum to a constant
Jan
7
reviewed Leave Open Standard deviation of a baised $d$-sided coin
Jan
7
reviewed Reject Gelfand-Mazur theorem on $GL_n(\mathbb{C})$
Jan
7
reviewed Approve Spivak Calculus on Manifolds, Theorem 5-2
Jan
7
reviewed Close Replacing Variables in Integration
Jan
7
reviewed Approve If a prime number is reversed, and then appended to itself, why is the result always a composite number?