attractor/15 Lorenz Ⅰ

Description

> a = 10, b = 28, c = 8/3, ``` def lorenz_I(a, b, c): h = lambda x, y: sqrt(x*x + y*y) return lambda x, y, z:( (-a - 1)*x + (a - b)*y + (1 - a)*h(x, y) + y*z, (b - a)*x - (a + 1)*y + (b + a)*h(x, y) - (x + h(x, y))*z, y/2 - c*z ) ``` ## References > Lorenz-Attraktor > http://page.math.tu-berlin.de/~gunn/Files/mvws13html/html2420/lorenz2420.html > > R. Miranda & E. Stone, The proto-Lorenz system, Physics Letters A 178 (1993) 105-113.