43,142 reputation
475187
bio website
location
age
visits member for 3 years, 9 months
seen Jun 24 '13 at 0:06

No, his mind is not for rent
to any god or government.
Always hopeful, yet discontent.
He knows changes aren't permanent,
but change is.

— Rush, Tom Sawyer


Taking an externally-imposed and much-needed break from SE activities.

E-mail (flipped ROT13): zqd˙ʎʌuzʇ@ʇɐʌǝɥʇʌssqɹǝɥɟuɹʎɔ
Any code I've posted here I place under the WTFPL.


Jun
11
revised What 's the differece between $\cot(x)$ and $\arctan(x)$?
edited tags
Jun
11
revised Goldberg polyhedra coordinates
edited tags
Jun
11
comment My sister absolutely refuses to learn math
@Love, your suggestion of "treat it like a Foreign language" is quite sound; the symbols were invented precisely to compress what would take a lot of English/whatever words to describe. 'course, some people don't want to bother with learning foreign languages either.
Jun
11
comment My sister absolutely refuses to learn math
@Love, "I was always confident I could solve the problem if I knew what the words meant..." - I'd say that applies not only to math, but to programming as well, and to any subject of some complexity in general.
Jun
11
revised My sister absolutely refuses to learn math
edited tags
Jun
9
comment What is $\pi$ in mathematics; does $\pi = 3.14$? From where does it come?
None of the previous tags were appropriate. Jeez...
Jun
9
revised What is $\pi$ in mathematics; does $\pi = 3.14$? From where does it come?
edited tags
Jun
9
revised $\sqrt 2$ is even?
added 2 characters in body
Jun
9
comment Goldberg polyhedra coordinates
You might want to see this.
Jun
9
revised Meaning of $\alpha$ in Laguerre polynomials
edited tags
Jun
9
awarded  combinatorics
Jun
8
revised Moore-Penrose pseudo inverse algorithm implementation in Matlab
edited tags
Jun
8
revised Moore-Penrose pseudo inverse algorithm implementation in Matlab
deleted 1 characters in body
Jun
8
comment Moore-Penrose pseudo inverse algorithm implementation in Matlab
@justik, as long as your computing environment allows you to compute the singular value decomposition of a matrix, then it is not too hard to construct the Moore-Penrose inverse.
Jun
8
comment Laplace, Legendre, Fourier, Hankel, Mellin, Hilbert, Borel, Z…: unified treatment of transforms?
You might be interested in things like the FHA cycle...
Jun
8
comment Eigenvectors of inverse complex matrix
@Sharkos, certainly true, but I suspect that OP might not have noticed that his eigenvectors can look a bit different, since MATLAB does no normalization of eigenvectors, if memory serves.
Jun
8
comment Eigenvectors of inverse complex matrix
You are aware that if $\mathbf v$ is an eigenvector of $\mathbf A$ corresponding to an eigenvalue $\lambda$, then $c\mathbf v$ ($c\neq 0$) is an equally valid eigenvector as well?
Jun
8
revised How to prove the inequality between mathematical expectations?
edited tags
Jun
8
revised Formula for the number of 0's in an alternating 0-1 matrix
deleted 10 characters in body
Jun
8
revised How do we show the equality of these two summations?
added 4 characters in body