Chieh-Lei Wong

collaborators

2 papers

math.NT2021

On the elegance of Ramanujan's series for $π$

Chieh-Lei Wong

Re presenting the traditional proof of Srinivasa Ramanujan's own favorite series for the reciprocal of $π$ :\begin{equation}\frac{1}π = \frac{\sqrt{8}}{9801} \sum_{n=0}^{+\infty} \…

math.AP2014

On the lack of compactness on stratified Lie groups

Chieh-Lei Wong

In $R^{d}$ , the characterization of the \mbox{lack of compactness of the continuous Sobolev injection $H ˚^{s} ↪ L^{p}$ }, with $ \displaystyle{\frac{s}{…

On the elegance of Ramanujan's series for π

On the lack of compactness on stratified Lie groups

On the elegance of Ramanujan's series for $π$