참고문헌
- J. G. F. Belinfante, Robinson's (1937) definition of ordinal, 2008.
- G. Cantor, Beitrage zur Begrundung der transfiniten Mengenlehre. II (tr.: Contributions to the Founding of the Theory of Transfinite s II), Mathematische Annalen 49, 207-246 English translation, 1897. https://doi.org/10.1007/BF01444205
- J. Dugundji, Topology, Allyn and Bacon, Inc., Boston, 1970.
- A. G. Hamilton, Numbers, Sets and axioms, Cambridge University Press, New York, 1982.
- K. Hrbacek and T. J. Jech, Introduction to Set Theory, Marcel Dekker, 2nd edition, 1984.
- T. J. Jeck, Set Theory, Springer Monographs in Mathematics, Springer-Verlag, New York, 2003.
- J. L. Kelley, General Topology, Springer-Verlag, New York, 1955.
- J. Maltiz, Introduction to Mathematical Logic, Springer-Verlag, New York Inc., 1979.
- J. von Neumann, "An Axiomatization of Set Theory." English translation in Jean van Heijenoort, ed., 1967. From Frege to Godel: A Source Book in Math- ematical Logic, 1879-1931. Harvard University Press. 393 - 413, 1925.
- J. R. Shoenfild, Axioms of Set Theory, Handbook of Mathematical Logic, Edited by Jon Barwise, Elsevier Science Publishers, 1977.
- T. Skolem, Abstract Set Theory, University of Notre Dame, 1962.