Studia Logica

, Volume 22, Issue 1, pp 7–14 | Cite as

Undecidability of the homogeneous formulas of degree 3 of the predicate calculus

  • August Pieczkowski


Decision Problem Binary Relation Atomic Formula Finite Sequence Relation Symbol 
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  1. [1]
    S. Jaśkowski:Sur les variables propositionnelles dependantes, Studia Societatis Scientiarum Torunesis, Toruń, Polonia, Vol. I, 2 (1948), p. 17–21.Google Scholar
  2. [2]
    S. Jaśkowski:Undecidability of first order sentences in the theory of free groupoids, Fundamenta Mathematicae, vol. XLIII, 1 (1956), p. 36–45.Google Scholar
  3. [3]
    L. Henkin, A. Tarski:Cylindric Algebras, Proceedings of Symposia in Pure Mathematics, Vol. II, Lattice Theory, 1961, p. 83–113.CrossRefGoogle Scholar

Copyright information

© Warszawa 1968

Authors and Affiliations

  • August Pieczkowski
    • 1
  1. 1.Katedra MatematykiUniversytet im. M. KopernikaToruńPoland

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