1d
comment LU Decomposition with memory-mapped matrices
was able to find a really nice approximation with block iterative hybrid algorithm, based on this scheme: spectrum.library.concordia.ca/2484/1/MM18429.pdf and recursive block-wise iterative inversion, and it only took a week of CPU time in a single Xeon machine!
1d
accepted LU Decomposition with memory-mapped matrices
2d
awarded Popular Question
2d
accepted neutron transport approximations for nuclear rocket modelling
May
18
comment ergosphere treadmills
"your intuition is going wrong if you think that the black holes accelerate you in average" Lubos, there is a whole field of orbit engineering called gravity assist manoeuvring, the whole point of it being that positive mass object can and do give you a net acceleration. Its existence proves that your argument is wrong
May
17
awarded Popular Question
May
16
awarded Popular Question
May
15
awarded Student
May
15
asked data plan for a few days on San Diego
May
14
awarded Caucus
May
13
answered Is there any correlation between mass-energy equivalence and Maxwell's 4th equation?
May
6
comment Why does compressing a piston increase the internal energy?
what you mean with 'none of this energy is imparted to the gas'? The kinetic energy is transformed in potential electrostatic repulsion between atoms and friction, which becomes heat
May
6
answered Are all points in the universe connected?
May
5
comment LU Decomposition with memory-mapped matrices
anything that can allow me to solve linear systems encoded in a huge, memory-mapped dataset would be good enough i think
May
5
asked LU Decomposition with memory-mapped matrices
May
5
awarded Popular Question
May
4
revised Can anyone recommend a library in C++ which has the most efficiency in doing sparse matrix operations under Windows system
fixed typo in title
May
4
answered What's the physical difference between the quantities $\langle v_{i}v_{j}\rangle$ and $\langle v_{i}\rangle\langle v_{j}\rangle$?
May
4
comment Reaching the speed of light via quantum mechanical uncertainty?
didn't know that planck constant had the same units as c!
May
3
revised recursive algorithm to obtain grid points inside a n-cube volume or surface
added 9 characters in body
1 2 3 4 5