Stack Exchange
sign up
|
log in
|
Physics
Questions
Tags
Tour
Users
Ask Question
Badge
Teacher
Answered first question with score of 1 or more.
Joe earned this badge
may 23 '11 at 12:49
Trace of a commutator is zero - but what about the commutator of $x$ and $p$?
Others with this badge
Physics Stack Exchange works best with JavaScript enabled