Read More
Date: 22-12-2021
![]()
Date: 22-8-2021
![]()
Date: 17-11-2021
![]() |
The best known example of an Anosov diffeomorphism. It is given by the transformation
![]() |
(1) |
where and
are computed mod 1. The Arnold cat mapping is non-Hamiltonian, nonanalytic, and mixing. However, it is area-preserving since the determinant is 1. The Lyapunov characteristic exponents are given by
![]() |
(2) |
so
![]() |
(3) |
The eigenvectors are found by plugging into the matrix equation
![]() |
(4) |
For , the solution is
![]() |
(5) |
where is the golden ratio, so the unstable (normalized) eigenvector is
![]() |
(6) |
Similarly, for , the solution is
![]() |
(7) |
so the stable (normalized) eigenvector is
![]() |
(8) |
|
|
للعاملين في الليل.. حيلة صحية تجنبكم خطر هذا النوع من العمل
|
|
|
|
|
"ناسا" تحتفي برائد الفضاء السوفياتي يوري غاغارين
|
|
|
|
|
ملاكات العتبة العباسية المقدسة تُنهي أعمال غسل حرم مرقد أبي الفضل العباس (عليه السلام) وفرشه
|
|
|