Causal Order of Limits: Timelike, Spacelike, or Lightlike (2/2)
4. If the differential element's scalar goes to zero first,
the derivative is not defined, but the norm of the derivative is.
The interval between the differential element events is spacelike.
Classical quantum mechanics applies.
Classically: Know much about a little space.
Classical QM: Know much about a little time.
sweetser@alum.mit.edu copyright 2003, all rights reserved.
