6 found
Order:
  1.  19
    The lω1ω1-theory of Hilbert spaces.Ralph Kopperman - 1967 - Journal of Symbolic Logic 32 (3):295 - 304.
  2.  7
    Model theory and its applications.Ralph Kopperman - 1972 - Boston,: Allyn & Bacon.
  3.  19
    On the axiomatizability of uniform spaces.Ralph Kopperman - 1967 - Journal of Symbolic Logic 32 (3):289-294.
  4. The $mathrm{L}{omega_1omega1}$-Theory of Hilbert Spaces.Ralph Kopperman - 1967 - Journal of Symbolic Logic 32 (3):295-304.
  5.  18
    Greg Cherlin and Joram Hirschfeld. Ultrafilters and ultraproducts in non-standard analysis. Contributions to non-standard analysis, edited by W. A. J. Luxemburg and A. Robinson, Studies in logic and the foundations of mathematics, vol. 69, North-Holland Publishing Company, Amsterdam and London 1972, pp. 261–279. [REVIEW]Ralph Kopperman - 1975 - Journal of Symbolic Logic 40 (4):634.
  6.  5
    Review: Greg Cherlin, Joram Hirschfeld, W. A. J. Luxemburg, A. Robinson, Ultrafilters and Ultraproducts in Non-Standard Analysis. [REVIEW]Ralph Kopperman - 1975 - Journal of Symbolic Logic 40 (4):634-634.