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This is an
arXiv
category tag for the analysis of partial differential equations.
Some Notes on Weighted Sobolev Spaces
Embedding theorems for Weighted Sobolev Spaces
Willie WY Wong
2021-02-23
Last updated on
2021-02-23
8 min read
Expository
Colloquium Notes: Craig Evans
L. Craig Evans is a professor at UC Berkeley. For many students he is best known for his textbook on partial differential equations. I …
Willie WY Wong
2020-02-27
Last updated on
2020-02-28
10 min read
notes from talks
Matter field from diffeomorphism: on a theme of Capoferri and Vassiliev
I try to reformulate an idea of Capoferri and Vassiliev in the infinitesimal limit and see where it goes.
Willie WY Wong
2019-11-21
Last updated on
2019-11-21
5 min read
research
Oscillatory Solutions to the Heat Equation
As we all learned in a first course in PDEs, for "reasonable" initial data $u_0$, the solution to the linear heat equation …
Willie WY Wong
2019-10-03
Last updated on
2019-10-07
4 min read
mathematical diversions
The Nirenberg Trick and Wave Maps
The "Nirenberg trick" or "Nirenberg transformation" is the observation1 that the semilinear wave equation …
Willie WY Wong
2019-06-19
Last updated on
2019-06-19
5 min read
mathematical diversions
Convergence to Planewaves for Solutions to Schrödinger's equation III
In this installment, we look at Schrödinger's equation with barriers, and study the decay of the solutions.
Willie WY Wong
2019-05-23
Last updated on
2019-11-15
25 min read
mathematical diversions
Convergence to Planewaves for Solutions to Schrödinger's equation II
We use Laplace transform arguments to look at the convergence of infinite energy solutions of the free 1D Schrödinger's equation …
Willie WY Wong
2019-05-20
Last updated on
2019-05-23
11 min read
mathematical diversions
Convergence to Planewaves for Solutions to Schrödinger's equation
We look at the convergence of infinite energy solutions of the free 1D Schrödinger's equation to plane waves.
Willie WY Wong
2019-05-10
Last updated on
2019-05-15
16 min read
mathematical diversions
Simulating Closed Cosmic Strings
One of my current research interests is in the geometry of constant-mean-curvature time-like submanifolds of Minkowski space. A special …
Willie WY Wong
2016-06-01
Last updated on
2019-05-31
8 min read
mathematical diversions
Shooting particles with Python
Numpy simulation of how classical and quantum particles interact with potential barriers.
Willie WY Wong
2015-04-24
Last updated on
2019-06-04
8 min read
mathematical diversions
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