Hi all, I'm a senior undergraduate in US. My direction is in applied math and numerical analysis so I want to contribute to our suborg this year :) This is my first time to apply for GSoC. As I mentioned above, I've already had some background in related math and I have some experience in solving PDEs numerically with classical schemes. In the ideas list, I'm more interested in "implement scipy.diff (numerical differentiation)" and "improve the parabolic cylinder functions". For programming languages, I'm a intermediate learner in Python, MATLAB and R, also having some skills in C/C++. If anyone can give me some tips in the requirements of these two projects and proposal writing I'll be very appreciate, and if you have suggestions in choosing projects or developing ideas please let me know. Thanks! Best, Qianhui Qianhui Wan, senior Fall 2016 - Spring 2017, visiting, Math Department, University of Wisconsin, Madison, US Spring 2016, visiting, Math Department, University of California, Berkeley, US Fall 2013 - Spring 2017, Math School, Sun Yat-sen University, Guangzhou, China