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seen Mar 29 at 19:29

Oct
16
answered Generating continuous products or sum
Oct
16
answered 3D Random Walk with Periodic Boundary Conditions
Oct
15
comment Implementing OCR without using TextRecognize
@belisarius yes; perhaps he's not there because when he had the energy he didn't have time and vice versa
Oct
15
comment Mathematica: summing over n abstract indices
I'm only joking. You understood me perfectly well, so it is my fault if this is wrong :)
Oct
15
comment Mathematica: summing over n abstract indices
ah yes, blame it on me if it's wrong :) (joking)
Oct
15
comment Implementing OCR without using TextRecognize
@belisarius just hope he's not looking for Schroedinger or Wilson
Oct
15
comment Alternatives to While Loops?
without an example it's hard to say, but maybe NestWhile will be useful
Oct
15
accepted Speeding up construction of simple tridiagonal matrix
Oct
15
comment Why is NDSolve solving in term of two 1st order ODE slower than 2nd order?
an example would be helpful
Oct
15
comment compile function and floating points
@chris if it's about displaying them in a compact way, take a look at this question (and answers to it)
Oct
14
revised compile function and floating points
added 28 characters in body
Oct
14
comment compile function and floating points
@OleksandrR. OK good thanks. Good luck with the writing :)
Oct
14
comment compile function and floating points
@OleksandrR. I see your point (I was just experimentally looking for a small enough number so to my shame did not even know what MachineEpsilon is supposed to be). How do you feel about x = 1. + 0.001 $MachineEpsilon;x - 1 as an example, then?
Oct
14
comment compile function and floating points
@OleksandrR. I don't understand what you're saying I'm afraid. Can you unpack this a bit? (also, any thoughts on this?)
Oct
14
revised Speeding up construction of simple tridiagonal matrix
added 165 characters in body
Oct
14
answered compile function and floating points
Oct
13
comment Speeding up construction of simple tridiagonal matrix
Maybe part of the speed difference is related to unpacking? Also, it appears that how faster this is (faster than Band) depends on the system size--see update in my question. I wonder why.
Oct
13
revised Speeding up construction of simple tridiagonal matrix
Added speed comparison and mention of packing
Oct
13
asked Speeding up construction of simple tridiagonal matrix
Oct
12
awarded  Nice Answer