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visits member for 2 years, 11 months
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Code for my breathing avatar here


You may contact me at: BelisariusForSO@gmail.com

But please don't email me with requests about Q&A. Post them in the site instead.

Infix should be used only where it is essential... like in "feliz año nuevo" @rm-rf


Jun
30
comment Efficient way to build a certain quadratic matrix
@RunnyKine Ha! Replacements are usually quite slow artifacts, I still don't understand why they beat "better" approaches here :)
Jun
30
comment Efficient way to build a certain quadratic matrix
Nicely done ....+1
Jun
30
comment Efficient way to build a certain quadratic matrix
Thanks a lot. For some reason my machine hangs running your test suite.
Jun
30
revised Efficient way to build a certain quadratic matrix
added 98 characters in body
Jun
30
comment Efficient way to build a certain quadratic matrix
@rasher Thanks! I still don't fully get why a replace is so fast
Jun
30
comment Efficient way to build a certain quadratic matrix
Do you mind to use my second try on the comparison?
Jun
30
comment Efficient way to build a certain quadratic matrix
Do you mind to use my second try on the comparison?
Jun
30
revised Efficient way to build a certain quadratic matrix
added 146 characters in body
Jun
29
revised Efficient way to build a certain quadratic matrix
added 3 characters in body
Jun
29
revised Efficient way to build a certain quadratic matrix
deleted 10 characters in body
Jun
29
revised Efficient way to build a certain quadratic matrix
added 7 characters in body
Jun
29
answered Efficient way to build a certain quadratic matrix
Jun
28
comment How to solve this nonlinear 2 by 2 equations?
Seems you forgot to include the a = 0.25; F = 0.015641; q1 = 5.3415; c[b_] := Log[b + 1]; part. It only matters because the OP has defined c[b_] wrong.
Jun
28
comment How to solve this nonlinear 2 by 2 equations?
a = 0.25;F = 0.015641;q1 = 5.3415;c[b_] := Log[b + 1];eqs = {(x^2 + q1^2 - y^2)/2*(x + q1 - y) + (1 - 2*a)*x + 2*F - 2*(1 - a)*c[x] <= 0, (x^2 + q1^2 - y^2)/2*(x + q1 - y) + (1 - 2*a)*y + 2*F - 2*(1 - a)*c[y] <= 0}; RegionPlot[eqs, {x, -2, 15}, {y, -5, 15}]
Jun
27
revised Binning events with weights
added 20 characters in body
Jun
27
comment Binning events with weights
Same here. +1, of course
Jun
27
revised Binning events with weights
added 174 characters in body
Jun
27
answered Binning events with weights
Jun
26
awarded  Taxonomist
Jun
26
awarded  Nice Answer