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Rod and Balls and Finsler (Redux)
In a previous post we discussed a little problem in "almost" Finsler geometry. In this post we will dissect some properties …
Willie WY Wong
2021-03-25
Last updated on
2021-03-25
9 min read
Mathematical Diversions
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
A Rod and Ball Problem (Finsler Geometry)
This post is inspired by: In the diagram a 1 meter rod, initially horizontal, rotates 90-degrees about endpoint B & then translates …
Willie WY Wong
2021-02-08
Last updated on
2021-02-09
11 min read
Mathematical Diversions
The Second Mean Value Theorem for Integrals
This post concerns the second mean value theorem for definite integrals. Theorem [Second MVT for Integrals] Let $w$ be a …
Willie WY Wong
2020-11-03
Last updated on
2020-11-03
4 min read
expository
Integration Theories
Since I am preparing to teach intro real analysis this fall, it is a good time for me to get reacquainted with Riemann integration and …
Willie WY Wong
2020-08-05
Last updated on
2020-08-05
8 min read
expository
Moore-Osgood Theorem
This short post aims at proving a general version of the Moore-Osgood Theorem on interchanging of limits. Theorem …
Willie WY Wong
2020-07-16
Last updated on
2020-07-16
2 min read
expository
Jacobi Iteration Method
Summary of the Jacobi iteration method in numerical linear algebra, and some caveats.
Willie WY Wong
2020-07-13
Last updated on
2020-07-13
6 min read
mathematical diversions
Volume of Simplices
How to compute the volume of a simplex using the Cayley-Menger determinant, and a higher dimensional Pythagorean theorem
Willie WY Wong
2020-07-07
Last updated on
2020-07-07
11 min read
expository
Logical Formulae
Since the COVID-19 crisis and the university moving to online instruction, I've spent too much time programming WeBWorK assignments. …
Willie WY Wong
2020-04-19
Last updated on
2020-04-19
2 min read
mathematical diversions
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
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