Browsing Artykuły (WFiNS) by Author "Pietruszczak, Andrzej"

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Browsing Artykuły (WFiNS) by Author "Pietruszczak, Andrzej"

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  • Pietruszczak, Andrzej (2015-12-12)
    By the classical mereology I mean a theory of mereological structures in the sense of [10]. In [7] I proved that the class of these structures is not elementarily axiomatizable. In this paper a new version of this result ...
  • Gruszczyński, Rafał; Pietruszczak, Andrzej (2010-12-30)
    As it is indicated in the title, this paper is devoted to the problem of defining mereological (collective) sets. Starting from basic properties of sets in mathematics and differences between them and so called conglomerates ...
  • Pietruszczak, Andrzej (Wydawnictwo Naukowe Uniwersytetu Mikołaja Kopernika, 1997)
    We will present an elementary theory in which we can speak of mereological sets composed of distributive classes. Besides the concept of a distributive class and the membership relation, it will possess the notion of a ...
  • Krysztofiak, Wojciech; Pietruszczak, Andrzej (Wydawnictwo Uniwersytetu Mikołaja Kopernika, 1997)
    Głównym celem pracy jest przedstawienie formalnej koncepcji noematów. W pierwszej części, trzy nieformalne koncepcje noematów są poddane analizie. Celem tej części jest wyszczególnienie głównych kontrowersji dotyczących ...
  • Pietruszczak, Andrzej (2010-03-30)
    In the present paper we examine very weak modal logics C1, D1, E1, S0.5◦, S0.5◦+(D), S0.5 and some of their versions which are closed under replacement of tautological equivalents (rte-versions). We give semantics for these ...
  • Gruszczyński, Rafał; Pietruszczak, Andrzej (2009-11-30)
    This article is devoted to the problem of ontological foundations of three-dimensional Euclidean geometry. Starting from Bertrand Russell’s intuitions concerning the sensual world we try to show that it is possible to build ...

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