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@mango314
mango314 / _.md
Last active Aug 29, 2015
Lissajous Curve
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@mango314
mango314 / README.md
Last active Aug 29, 2015
exercise capture animaged gif
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today's exercise is to capture the animated gif. Beautiful example from codepen.io

In order to save animaged gif, we need program like Byzanz.

sudo add-apt-repository ppa:fossfreedom/byzanz
sudo apt-get update && sudo apt-get install byzanz
byzanz-record --duration=15 --x=200 --y=300 --width=700 --height=400 out.gif
@mango314
mango314 / 05.txt
Last active Aug 29, 2015
expansion in the group SL(2,Fp) with A = [[[1,1],[0,1]],[[1,-1],[0,1]],[[1,0],[1,1]],[[1,0],[-1,1]]]
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13
34
81
113
120
@mango314
mango314 / english.txt
Last active Aug 29, 2015
translating preface from Minkowski's "Diophantisce Approximationen"
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The source of all mathematics are integers.
This I understand, not only in your traditional sense that the concept of the continuum is albeitet from consideration of discrete quantities.
Rather, I think these words on results of recent date.
Mastering the exponential function of the number of segments from the acquisition of elliptic functions by means of modular equations can confidently believe that the deepest relationships in the Analysis of arithmetic in nature.
This confidence has already paying off.
@mango314
mango314 / blogs.txt
Created Mar 25, 2015
blogs related to work and business
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http://blog.domini.io/
View chebyshev.py
from sympy import symbols
from sympy.matrices import *
from sympy import collect
x,t = symbols('x a b c d')
V = Matrix([[2*x+a, 1, 0,0], [1, 2*x+b, 1,0], [0, 1, 2*x+c,1], [0,0,1,2*x+d]])
collect(V.det(),a)
"""a*(b*c*d + 2*b*c*x + 2*b*d*x + 4*b*x**2 - b + 2*c*d*x + 4*c*x**2 + 4*d*x**2 - d + 8*x**3 - 4*x) + 2*b*c*d*x + 4*b*c*x**2 + 4*b*d*x**2 + 8*b*x**3 - 2*b*x + 4*c*d*x**2 - c*d + 8*c*x**3 - 2*c*x + 8*d*x**3 - 4*d*x + 16*x**4 - 12*x**2 + 1"""
@mango314
mango314 / README.md
Last active Aug 29, 2015
navigating cabal hell for iHaskell
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