851 reputation
512
bio website
location Universidade de São Paulo, Brazil
age 29
visits member for 2 years, 2 months
seen Mar 24 at 18:13

I am currently a post-doc at the Physics department at the University of Sao Paulo. My interests are in Statistical Physics, stochastic processes and magnetism. More importantly, I really value simple and solid explanations to important problems in any science.


Mar
17
awarded  Good Question
Mar
10
comment Addition of sparse array objects
@rm-rf My version is 9.0.1.0. And I have disabled the suggestive interface (in the Preferences menu) and it did not change anything.
Mar
10
asked Addition of sparse array objects
Feb
1
awarded  Yearling
Dec
7
awarded  Notable Question
May
9
awarded  Popular Question
Mar
13
comment Counting the number of a specific type of permutation
This is precisely the type of Sort syntax that I was trying to figure out. Thanks for the help.
Mar
13
comment Counting the number of a specific type of permutation
This works great and also agrees with Carraher's answer. Thank you very much. Do you have any references in which I could learn more from these types of calculations. I think I will soon encounter more complicated combinations. Thank you very much for the help.
Mar
13
accepted Counting the number of a specific type of permutation
Mar
13
asked Counting the number of a specific type of permutation
Mar
6
comment Why does compiling a function with ConstantArray give an error when used in parallel?
Thank you all for the support and the useful feedback, and sorry about the 'bug' labelling. ConstantArray seemed like a simple function, and I have found other seemingly more complicated functions which compiled fine.
Mar
6
accepted Why does compiling a function with ConstantArray give an error when used in parallel?
Mar
5
asked Why does compiling a function with ConstantArray give an error when used in parallel?
Feb
1
awarded  Yearling
Jan
18
awarded  Good Question
Jan
16
comment More efficient matrix-vector product
@Jens Actually, I asked that question :)
Jan
15
revised More efficient matrix-vector product
Added that $A$ is symmetric
Jan
15
comment More efficient matrix-vector product
@rcollyer What exactly do you mean by generating in eigenspace: if $A = S \Lambda S^{-1}$ then I should do $Ax = S \Lambda S^{-1} x$? Also, I read your link on spherical components, but didn't really get how that would translate to the present problem. Again, thanks for the help.
Jan
15
comment More efficient matrix-vector product
Hi all. Sorry for the delay in answering. Yes, $A$ will usually have full rank. It is also symmetric and has zero diagonal. But I don't know all the $x$'s in advance, so I need one dot product at a time. Thank you all for the support.
Jan
15
asked More efficient matrix-vector product