The particle distribution function f(v, x, t) ought not to become negative if it is to remain

Question:

The particle distribution function f(v, x, t) ought not to become negative if it is to remain physical. Show that this is guaranteed if it initially is everywhere nonnegative and it evolves by the collisionless Vlasov equation.

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Question Posted: