Published: 1961 Received: April 18, 1960Available on J-STAGE: August 29, 2006Accepted: -
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Date of correction: August 29, 2006Reason for correction: -Correction: CITATIONDetails: Wrong : 1) Smullyan, R. M., Theory of formal systems, Doctoral Dissertation, Princeton, May 1959 - also issued as M. I. T. Lincoln Laboratory group report 54-5, April 1959. Accepted for pubication by the Princeton University Press as an Annals of Mathematics Study. 2) Post, F., Formal reductions of the general combinatorial decision problem, Amer. J. Math., 65 (1943), 192-215. 3) Rosenboom, P. C., The elements of mathematical logic, Dover Publ. Inc., 1950, Chapter IV. 4) Markov, A. A., Teoriya algorifmov, (Theory of algorithms.) Trudy Mat. Inst. Steklov, No. 42. Moscow, 1954. 5) Lorenzen, P., Einführung in die operative Logik and Mathematik, Berlin-Göt-tingen-Heidelberg, 1955. 6) Smullyan, R. M., Languages in which self-reference is possible, J. Symbolic Logic, 22, 55-67. 7) Smullyan, R. M., Recursive logics, J. Symbolic Logic 21, 122.
Right : [1] Smullyan, R. M., Theory of formal systems, Doctoral Dissertation, Princeton, May 1959 - also issued as M. I. T. Lincoln Laboratory group report 54-5, April 1959. Accepted for pubication by the Princeton University Press as an Annals of Mathematics Study. [2] Post, E., Formal reductions of the general combinatorial decision problem, Amer. J. Math., 65 (1943), 192-215. [3] Rosenboom, P. C., The elements of mathematical logic, Dover Publ. Inc., 1950, Chapter IV. [4] Markov, A. A., Teoriya algorifmov, (Theory of algorithms.) Trudy Mat. Inst. Steklov, No. 42. Moscow, 1954. [5] Lorenzen, P., Einführung in die operative Logik und Mathematik, Berlin-Göttingen-Heidelberg, 1955. [6] Smullyan, R. M., Languages in which self-reference is possible, J. Symbolic Logic, 22, 55-67. [7] Smullyan, R. M., Recursive logics, J. Symbolic Logic 21, 122.
Date of correction: August 29, 2006Reason for correction: -Correction: PDF FILEDetails: -