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Set Theory

INTRODUCTION
FIRST AXIOMS
FIRST CONSTRUCTIONS
    NATURAL NUMBERS
    INTEGERS, RATIONALS AND REALS
      FINITE AND NUMERABLE SETS
        EQUIPOTENCY AND COMPARABILITY
        WELL ORDERED SETS
        ORDINALS
        ARITHMETIC OF ORDINALS
          TRANSFINITE INDUCTION AND RECURSION
            THE AXIOM OF CHOICE
            CARDINALS
              ARITHMETIC OF CARDINALS
                REGULAR SETS AND CUMULATIVE HIERARCHY