wrobel's latest activity

I would like to share a derivation of the celebrated Liouville's formula using the framework of differential forms and the Lie...

$$a^x:=\exp(x\ln a),\quad \exp(x):=1+\sum_{k=1}^\infty\frac{x^k}{k!},\quad a>0$$

Uniqueness does not hold under these conditions, even in the finite-dimensional case.

Perhaps someone would be interested in offering it to their students. There is a disk of radius ##R##. The disk is wound with two...

text: normal distribution, abnormal distribution, paranormal distribution, normal distribution inside a boa constrictor

The angular velocity of a rigid body is defined by the Euler formula: $$\boldsymbol{v}_A=\boldsymbol...

I am confident that this theorem is not new. Its proof relies heavily on Zorn's lemma, which is also not surprising

Hi everyone, I would like to share a result regarding the existence of solutions for systems of ordinary differential equations with an...

I’m reposting a question from MathOverflow here. I’d love to hear your thoughts/comments on it...