Here I will post some of my expository papers.
Fefferman's disc multiplier counterexample.
Description: A constructive counterexample to show that Fourier transform restricted to a unit ball is not a bounded operator.
Link download: Fefferman's disc multiplier counterexample.
Dynamics of piecewise translation maps.
Description: Study a special case of piecewise translation map on compact domains.
Link download: Dynamics of piecewise translation maps.
UC Irvine Real Analysis Qual
Description: Solutions to UC Irvine Real analysis quals. Use this at your own risk.
Link download: UCI Real Qual.
Description: Some techniques of using Bernoulli's inequality to solve non-homogeneous inequalities that occurred in some math competitions.
Link download: Bernoulli's inequality.
Tuyển tập các bài toán hình học phẳng
Description: A collection of typical geometry problems that occurred in math competitions.
Link download: Tuyển tập các bài toán hình học phẳng.