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Anakhand
  • Member for 6 years, 1 month
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  • Sant Cugat del Vallès (Barcelona), Spain
18 votes

Continuous functions do not necessarily map closed sets to closed sets

16 votes

Precise definition of the support of a random variable

5 votes

Proof that the dimension of a matrix row space is equal to the dimension of its column space

3 votes

Is proofwiki.org a reliable source of math proofs?

2 votes
Accepted

Expected value as well as variance of observing a TH string in coin flips

2 votes
Accepted

Degree of subfield fixed by single automorphism

2 votes
Accepted

Proving $\lVert T\rVert <\infty $ for $Tf(x):=\frac{1}{\sqrt2}f\big(\frac{x}{2}\big)$ (with $L^2$ norm on $f$)

1 vote
Accepted

Tschirnhaus transformation for cubic equation - "Galois Theory" by Stewart, 3rd edition

1 vote

Practicing degree arguments for field extensions

1 vote
Accepted

Why is the free product of a group with itself not isomorphic to itself?

1 vote

In $K(\alpha)/K$, example of different $K$-automorphisms with the same image of $\alpha$

1 vote

What is scaled partial pivoting?

1 vote

What's the number of possible paths from $(0,0)$ to $(m,n)$ cell in a matrix?

0 votes

To find the equation of a plane

0 votes

Could binomial probability be used as an approximation in this scenario?

0 votes

Topologically equivalent metrics but not strongly equivalent in $\mathrm{Lip}_M(\mathbb{R})=\{f:[0,1]\rightarrow\mathbb{R}:|f(y)-f(x)|\leq M·|y-x|\}$

0 votes
Accepted

Example in $\ell^1$ of a bounded and componentwise convergent sequence that is not weakly convergent

0 votes

How much redundancy is needed to comfortably ensure an outcome of a probabilistic event?

-1 votes
Accepted

$P (x)$ and $Q (x)$ are predicates and $a$ is an element of the domain of the variable $x$