849 reputation
414
bio website twitter.com/#!/ziyuang
location
age
visits member for 2 years, 11 months
seen 13 hours ago

enter image description here


Apr
14
revised Similarity between $I+N$ and $e^N$ when $N$ is nilpotent
added 359 characters in body
Apr
14
revised Similarity between $I+N$ and $e^N$ when $N$ is nilpotent
added 306 characters in body
Apr
14
revised Similarity between $I+N$ and $e^N$ when $N$ is nilpotent
added 271 characters in body
Oct
17
revised How many $n$'s can make $4m^2-n^2$ a perfect square? And, triple of a perfect square?
edited title
Oct
17
revised How many $n$'s can make $4m^2-n^2$ a perfect square? And, triple of a perfect square?
edited title
Oct
17
revised How many $n$'s can make $4m^2-n^2$ a perfect square? And, triple of a perfect square?
added 79 characters in body
Oct
17
revised How many $n$'s can make $4m^2-n^2$ a perfect square? And, triple of a perfect square?
added 79 characters in body
Sep
25
revised Solution to a system of linear equations in GF(2)
added 104 characters in body
Sep
25
revised Solution to a system of linear equations in GF(2)
added 11 characters in body
Sep
25
revised Getting the inverse of a lower/upper triangular matrix
added 4 characters in body
Jun
26
revised How to use Galerkin method to prove uniqueness of solutions of hyperbolic equations?
uniqueness -> existence
Jun
25
revised Getting the inverse of a lower/upper triangular matrix
added 11 characters in body
Jun
25
revised Question in solving $\phi(t)=\phi(2t)+\phi(2t-1)$, $\phi\ne0$
edited tags
Jun
23
revised Question in solving $\phi(t)=\phi(2t)+\phi(2t-1)$, $\phi\ne0$
deleted 73 characters in body
Jun
23
revised Question in solving $\phi(t)=\phi(2t)+\phi(2t-1)$, $\phi\ne0$
title refined
Jun
23
revised Question in solving $\phi(t)=\phi(2t)+\phi(2t-1)$, $\phi\ne0$
Simplify the description
Jun
22
revised How to calculate dual frames under constraints?
added 4 characters in body; added 3 characters in body
Jun
22
revised How to calculate dual frames under constraints?
added 89 characters in body
Jun
22
revised How to calculate dual frames under constraints?
problem 1 is solved and thus removed
Jun
22
revised How to calculate dual frames under constraints?
added 135 characters in body