math.CA

This is an arXiv category tag: it contains classical analysis (real analysis and harmonic analysis of Euclidean spaces), and ordinary differential equations as subjects.

We describe a theorem due to Mihai Mariş concerning the symmetries of ground states.
Last updated on 13 min read expository

It is fairly well known that experts in partial differential equations and experts in harmonic analysis prefer to define the Fourier …
Last updated on 2 min read mathematical diversions

First let us consider the following question on a finite dimensional vector space. Let $(V, \langle\cdot\rangle)$ be a $k$-dimensional …
Last updated on 4 min read mathematical diversions