Appendix to Volume 1

1A1 Set theory
Notation; countable and uncountable sets.

1A2 Open and closed sets in R^r
Definitions; basic properties of open and closed sets; Cauchy's inequality; open balls.

1A3 Lim sups and lim infs
lim sup_n→∞a_n, lim inf_n→∞a_n in [-∞,∞].

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Revised 7.8.10