Answer to Question #163616 in Classical Mechanics for Afraid

Question

What is poission bracket

Answer 1

Answer

In fact, the Poisson bracket can be defined for any two functions defined in phase space:

$[f, g]=\Sigma(\frac{df}{dp}\frac{dg}{dq}-\frac{df}{dq}\frac{dg}{dp})$

For canonical transformation

$[f, g]=1$