10,513 reputation
22253
bio website gottwurfelt.wordpress.com
location Atlanta, GA
age 31
visits member for 4 years, 6 months
seen 8 hours ago

Data scientist and math blogger.


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?
Jan
7
awarded  Nice Answer
Jan
6
reviewed No Action Needed Can $n$ vertices be removed so the directed graph contains no cycles?
Jan
6
awarded  Custodian
Jan
6
reviewed Leave Closed Property of ideal
Jan
6
reviewed Close Fibonacci sequence, strings without 00, and binomial coefficient sums
Jan
6
reviewed Leave Open Intersection of functions $\ln(x)$ and $\frac{1}{x}$
Jan
6
reviewed Leave Open When a 0-1-matrix with exactly two 1’s on each column and on each row is non-degenerated? [3]
Jan
6
reviewed Leave Open connected graph with its vertices
Jan
6
reviewed Leave Open How do I find this limit?
Jan
6
answered If a prime number is reversed, and then appended to itself, why is the result always a composite number?
Dec
19
answered how many ways to choose 3 coins?
Dec
18
answered Four dice, probability that difference of some outcomes is equal to others
Dec
16
answered Expected value of a die when decision to role again depends on previous outcome
Dec
15
comment Taylor approximation for $\ln(1.3)$
Your book probably should say $0.255$.
Dec
15
comment Expected value of this deceptively simple variable
To find $E(Z)$: note that $Z$ is either 1, 0, or -1. With what probability does it take each of those values?