Advice on the use of arithmetic books (based largely on comments from
Robert Krug, and repeated in ../arithmetic-5/README):

  SUMMARY: Power users should include arithmetic-5/top; new users
  should probably instead include arithmetic/top-with-meta.

  Details:

  If you are willing to use dmr (see :doc dmr) and tolerate
  sometimes-slower (but more complete) reasoning, use arithmetic-5.
  Robert is not aware of any rewriting loops.

  While arithmetic-3 is generally not as powerful as arithmetic-5,
  and it may have more rewriting loops than arithmetic-5,
  cases have been observed in which arithmetic-3 proves something
  that arithmetic-5 does not prove, as well as cases in which arithmetic-3
  is faster than arithmetic-5.

  Note that arithmetic-2 is totally obsolete.  We may stop
  distributing it.

  If you want fast, lightweight arithmetic, use
  arithmetic/top-with-meta.

============================================================

Please see Section 0 of ../arithmetic-5/README for information about
which arithmetic books to use.

Contents of this directory:

README			This file
abs.lisp		Theorems about absolute value
binomial.lisp		A proof of the binomial theorem
equalities.lisp		Arithmetic equality rules
factorial.lisp		Theorems about the factorial function
idiv.lisp		Theorems about integer division and related functions
inequalities.lisp	Arithmetic inequality rules
mod-gcd.lisp            Theorems about mod and gcd
nat-listp.lisp          Book about lists of natural numbers
natp-posp.lisp          Theorems about natp and posp
rational-listp.lisp	Very short book about lists of rationals
rationals.lisp          Theorems about numerator and denominator
real-listp.lisp         Very short book about lists of reals
realp.lisp              Very short book about realp
sumlist.lisp		Theorems about sum of a list of numbers
top.lisp		Putting it all together
top-with-meta.lisp      Extension of top.lisp by the books in ../meta

Many people contributed to these books, especially

  Bishop Brock
  John Cowles
  Matt Kaufmann
  Art Flatau
  Ruben Gamboa
