User Christopher A. Wong - Mathematics Stack Exchange

Christopher A. Wong

Member for 11 years, 9 months
Last seen more than a week ago

cawong89.github.io
California, USA

421 Answers

Score Activity Newest

229 votes

Accepted

What is $x^y$? How to understand it?

answered Sep 28, 2012 at 6:26

67 votes

Accepted

Finding poles, indicating their order and then computing their residues

answered May 3, 2013 at 20:12

46 votes

Accepted

Solving $ \cos (\cos (\cos (\cos(x))))=\sin (\sin (\sin (\sin (x)))) $

answered Feb 18, 2014 at 22:19

38 votes

Very good linear algebra book.

answered May 22, 2014 at 0:36

32 votes

What is the intuition behind a function being 'weakly differentiable'?

answered Jan 25, 2013 at 3:56

31 votes

Accepted

Why does separation of variable gives the general solution to a PDE

answered Nov 1, 2020 at 23:58

30 votes

Accepted

Limit Supremum and Infimum. Struggling the concept

answered Oct 1, 2012 at 4:04

29 votes

What is the origin of the determinant in linear algebra?

answered Sep 12, 2012 at 7:24

25 votes

Are there any objects which aren't sets?

answered Mar 22, 2016 at 22:34

25 votes

Accepted

Can an underdetermined system have a unique solution?

answered Oct 5, 2012 at 8:29

25 votes

Minimal polynomials and characteristic polynomials

answered Dec 19, 2012 at 22:45

24 votes

Accepted

What is the difference between linear transformation and linear operator?

answered Sep 9, 2013 at 1:13

23 votes

product rule for matrix functions?

answered Apr 19, 2013 at 23:15

23 votes

Accepted

Rank of product of a matrix and its transpose

answered Oct 16, 2012 at 21:35

22 votes

Is the rank of a matrix equal to the number of non-zero eigenvalues?

answered Jun 7, 2020 at 19:28

20 votes

What is the essential difference between ordinary differential equations and partial differential equations?

answered Aug 24, 2015 at 21:11

18 votes

Accepted

Maximum value of $\int_{0}^{1}e^x\log f(x)dx$ when $\int_{0}^{1}f(x)dx=1$

answered Jul 16, 2014 at 9:39

15 votes

Differences between $L^p$ and $\ell^p$ spaces

answered Dec 28, 2013 at 22:02

15 votes

Uniform limit of holomorphic functions

answered Apr 21, 2013 at 23:00

15 votes

Level of Rigor in Mathematical Physics

answered Aug 20, 2013 at 21:23

15 votes

how to show image of a non constant entire function is dense in $\mathbb{C}$?

answered Mar 21, 2013 at 18:43

14 votes

Accepted

How do I find the series expansion of the meromorphic function $\frac{1}{e^z+1}$?

answered May 18, 2013 at 23:28

14 votes

Understanding the Gram-Schmidt process

answered Mar 2, 2014 at 6:04

14 votes

'Obvious' theorems that are actually false

answered Jun 4, 2014 at 18:09

13 votes

Accepted

Orthogonal complement of a Hilbert Space

answered Apr 5, 2013 at 21:00

13 votes

What is the difference between homotopy and homeomorphism?

answered Jan 18, 2013 at 11:57

13 votes

Show that a positive operator is also hermitian

answered Feb 6, 2013 at 1:52

12 votes

Accepted

proving Jensen's formula

answered Apr 16, 2013 at 9:32

12 votes

Column Space and SVD

answered Sep 8, 2013 at 19:25

11 votes

Integration in Banach spaces - interesting, nice and non-trivial examples needed

answered Apr 4, 2014 at 23:30

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