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Identity, equivalence and isomorphism of problems

  • Pavel Materna (a1)
Abstract

Zdzislaw Cackowski [1], commenting on ideas of Rubinštejn [3], points out that it is possible for two questions with the same answer to have different “content”.1 In the present paper we shall adopt a more general semantical approach to the question of identity of problems and will distinguish between equivalence and isomorphism.

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[1]Cackowski Zdzislaw, Problemy i pseudoproblemy, Książka i Wiedza, 1964.
[2]Materna Pavel, Redukce rozhodovacích problémů na zjištovací problémy (Reduction of decision problems to which-problems), Filosofický časopis 1968/1962.
[3]Rubinshtein S. L., O myšlénii i putáh´ égo isslédovaniá, Moskva, 1958.
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The Journal of Symbolic Logic
  • ISSN: 0022-4812
  • EISSN: 1943-5886
  • URL: /core/journals/journal-of-symbolic-logic
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