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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
Jun
22
revised How to use Galerkin method to prove uniqueness of solutions of hyperbolic equations?
added 9 characters in body