Motivated by a proof without words for the sum of the alternating harmonic series, this article delves into some interesting questions regarding a series to which the usual convergence tests do not ...

The study of automorphic forms and Lie theory stands at the intersection of analysis, geometry and arithmetic, providing a unifying framework that connects the spectral theory of differential ...

Brjuno and Rüssmann proved that every irrationally indifferent fixed point of an analytic function with a Brjuno rotation number is linearizable, and Yoccoz proved that this is sharp for quadratic ...