v0.2:
  * Added: Discussion of uniqueness of the solution of the Simple Equation

  * Added: Exercise: prove \psi_0>=0 using |\psi_0|

  * Added: Links in bibliography

  * Removed: Commented blocks

  * Fixed: Formatting


v0.1:

  * Fixed: H_N is not compact, e^{-H_N} is.

  * Fixed: Removed confusing discussion of Anyons

  * Added: Discussion of compactness.