91 found
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  1. C. Ryll-Nardzewski, Andrzej Grzegorczyk & Andrzej Mostowski (1958). The Classical and the Ω-Complete Arithmetic. Journal of Symbolic Logic 23 (2):188-206.
  2. Andrzej Grzegorczyk (1961). Zarys Logiki Matematycznej. Pa Nstwowe Wydawn. Naukowe.
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  3.  58
    Andrzej Grzegorczyk (2005). Undecidability Without Arithmetization. Studia Logica 79 (2):163 - 230.
    In the present paper the well-known Gödels – Churchs argument concerning the undecidability of logic (of the first order functional calculus) is exhibited in a way which seems to be philosophically interestingfi The natural numbers are not used. (Neither Chinese Theorem nor other specifically mathematical tricks are applied.) Only elementary logic and very simple set-theoretical constructions are put into the proof. Instead of the arithmetization I use the theory of concatenation (formalized by Alfred Tarski). This theory proves to be an (...)
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  4.  4
    Andrzej Grzegorczyk (1955). Some Classes of Recursive Functions. Journal of Symbolic Logic 20 (1):71-72.
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  5.  16
    Andrzej Grzegorczyk (1971). A Philosophically Plausible Formal Interpretation of Intuitionistic Logic. Journal of Symbolic Logic 36 (2):329-329.
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  6. Andrzej Grzegorczyk (2012). Errata Do Artykułu Andrzeja Grzegorczyka „Filozofia Logiki I Formalna LOGIKA NIESYMPLIFIKACYJNA”. Zagadnienia Naukoznawstwa 4.
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  7.  28
    Andrzej Grzegorczyk (1955). The Systems of Leśniewski in Relation to Contemporary Logical Research. Studia Logica 3 (1):77-95.
  8.  2
    Andrzej Grzegorczyk (1974). An Outline of Mathematical Logic: Fundamental Results and Notions Explained with All Details. D. Reidel Pub. Co..
  9.  12
    Andrzej Grzegorczyk, Marian Przełęcki, Mieczysław Choynowski & Jerzy Łoś (1958). Recenzje. Studia Logica 7 (1):277-286.
  10. Andrzej Grzegorczyk (1969). Some Relational Systems and the Associated Topological Spaces. Journal of Symbolic Logic 34 (4):652-653.
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  11.  34
    Andrzej Grzegorczyk (1960). Axiomatizability of Geometry Without Points. Synthese 12 (2-3):228 - 235.
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  12.  2
    Andrzej Grzegorczyk (2005). Undecidability Without Arithmetization. Studia Logica 79 (2):163-230.
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  13.  3
    Andrzej Grzegorczyk (1955). The Systems of Leśniewski in Relation to Contemporary Logical Research. Studia Logica 3 (1):77-95.
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  14.  8
    Andrzej Grzegorczyk (1967). Non-Classical Propositional Calculi in Relation to Methodological Patterns of Scientific Investigation. Studia Logica 20 (1):132-132.
    Modern methodology furnishes two partly competitive and partly complementary views on structure of the development of scientific investigation. According to the first view the development of science consists in enlargement of the set of empirical theorems; according to the other it consists, rather, in the narrowing of the set of possible theoretical hypotheses. A particular kind of assertion is associated with each of these views. The first is associated with the relation of assertion expressed in the statement: “the state α (...)
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  15.  5
    Andrzej Grzegorczyk (2004). A Philosophy for That Time: The Philosophy of Selflessness. Dialogue and Universalism 14 (5-6):167-172.
    The author reflects on the moral attitudes displayed by Poles fighting in the Warsaw Uprising. He believes that the sacrifice and selflessness with which Varsovians battled for their city had its roots in the general mentality of the Poles, who for generations had been raised in the spirit of “mutual and willing endowment”. He also notes that the noble ideals of the wartime generations have today been largely replaced by mercenary selfishness.
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  16.  17
    Andrzej Grzegorczyk (1962). On the Concept of Categoricity. Studia Logica 13 (1):39 - 66.
  17. Andrzej Grzegorczyk (1953). Undecidability of Some Topological Theories. Journal of Symbolic Logic 18 (1):73-74.
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  18.  2
    Andrzej Grzegorczyk (1967). Nieklasyczne rachunki zdań a met odologiczne schematy badania naukowego i definicje pojęć asertywnych. Studia Logica 20 (1):117-130.
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  19.  9
    Andrzej Grzegorczyk (1972). An Approach to Logical Calculus. Studia Logica 30 (1):33 - 43.
  20.  4
    Andrzej Grzegorczyk & Franek Lyra (2006). Our Eras. Dialogue and Universalism 16 (7-9):155-156.
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  21.  14
    Andrzej Grzegorczyk (1961). Le Traitement Axiomatique de la Notion de Prolongement Temporel. Studia Logica 11 (1):31-34.
  22.  3
    Andrzej Grzegorczyk (1999). Is Antipsychologism Still Tenable? Vienna Circle Institute Yearbook 6:109-114.
    Let us consider an arbitrary semantical relation. It holds between some linguistic entities and pieces of reality referred to. We may call it meaning. The controversy between psychologism and antipsychologism therefore may be exhibited as an ontological dilemma:Antipsychologism PsychologismThe relation of meaning is independent of human beings The relation of meaning is established by human beingsWhen we describe the meaning of words we do not need to refer to human behavior When we describe the meaning of words we need to (...)
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  23.  21
    Andrzej Grzegorczyk (1962). Uzasadnianie Aksjomatów Teorii Matematycznych. Studia Logica 13 (1):197 - 202.
  24.  21
    Andrzej Grzegorczyk (1949). The Pragmatic Foundations of Semantics. Synthese 8 (1):300 - 324.
  25.  1
    Andrzej Grzegorczyk (1964). A Note on the Theory of Propositional Types. Fundamenta Mathematicae 54 (3):27-29.
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  26.  13
    Andrzej Grzegorczyk (1967). Nieklasyczne Rachunki Zdań a Met Odologiczne Schematy Badania Naukowego I Definicje Pojęć Asertywnych. Studia Logica 20 (1):117 - 132.
  27.  12
    Andrzej Grzegorczyk (1961). Aksjomatyczne Badania Pojęcia Przedłużenia Czasowego. Studia Logica 11 (1):23-30.
  28.  7
    Andrzej Grzegorczyk (1972). Pewne Ujęcie Rachunku Logicznego. Studia Logica 30 (1):42-42.
  29.  14
    Andrzej Grzegorczyk (1971). Klasyczne, Relatywistyczne I Konstruktywistyczne Sposoby Uznawania Twierdzeń. Studia Logica 27 (1):151 - 161.
  30.  14
    Andrzej Grzegorczyk (1981). Individualistic Formal Approach to Deontic Logic. Studia Logica 40 (2):99 - 102.
    Some people approve of certain general rules of behavior, or some concrete cases. The others disapprove of or are indifferent to them. In this paper I suggest an axiom system which formalizes the use of these utterances. It may be considered as a special (individualistic) approach to deontic logic.
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  31.  13
    Andrzej Grzegorczyk (1962). O Pojęciu Kategoryczności. Studia Logica 13 (1):66-66.
    Pojęcie kategoryczności zostało wprowadzone w początku obecnego wieku, ażeby scharakteryzować teorie, które w intencji ich twórców mają dokładnie jeden model. Dalszy rozwój badań metalogicznych dotyczących modeli doprowadził do spostrezeżenia, że każda teoria matematyczna opisująca pewien model nieskończony, opisuje równocześnie wiele innych modeli z nim nieizomorficznych. Stąd pierwotne pojęcie kategoryczności straciło na znaczeniu. Pojawiły się natomiast badania mające na celu pewne zmodyfikowanie tego pojęcia. Praca niniejsza omawia różne rodzaje pojęcia kategoryczności znane z literatury logicznej i proponuje pewne nowe.
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  32.  3
    Andrzej Grzegorczyk (1961). Aksjomatyczne badania pojęcia przedłużenia czasowego / Le traitement axiomatique de la notion de prolongement temporel. Studia Logica 11:23 - 35.
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  33.  2
    Andrzej Grzegorczyk (1998). The Paradox of Grelling and Nelson Presented as a Veridical Observation Concerning Naming. In Katarzyna Kijania-Placek & Jan Woleński (eds.), The Lvov-Warsaw School and Contemporary Philosophy. Kluwer Academic Publishers 183--190.
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  34.  6
    Andrzej Grzegorczyk (1971). Classical, Relativistic and Constructivistic Ways of Assertion of Theorems. Studia Logica 27 (1):160-160.
  35.  1
    Andrzej Grzegorczyk (2004). Decidability Without Mathematics. Annals of Pure and Applied Logic 126 (1-3):309-312.
    The paper proposes a new definition of the conception of effectiveness . A good name for this version of effectiveness is discernibility. The definition is based on the fact that every computation may be reduced to the operation of discerning the fundamental symbols and concatenation of formulas. This approach to effectiveness allows us to formulate the proof of undecidability in such a way that arithmetization of the syntax may be replaced by the use of concatenation in metalogic.
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  36. Roderick M. Chisholm & Andrzej Grzegorczyk (1951). The Pragmatic Foundations of Semantics. Journal of Symbolic Logic 16 (4):292.
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  37. Andrzej Grzegorczyk (1950). An Essay at Founding the Semantics of a Descriptive Language. Journal of Symbolic Logic 15 (1):64-65.
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  38. Andrzej Grzegorczyk (2010). „Ani Na Górze, Ani W Jerozolimie… Ale W Duchu I W Prawdzie”. Przeglad Filozoficzny - Nowa Seria 73.
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  39. Andrzej Grzegorczyk & Marek Gołębiowski (2004). A Philosophy for That Time. Dialogue and Universalism 14 (5):167-171.
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  40. Andrzej Grzegorczyk (1973). An Unfinitizability Proof by Means of Restricted Reduced Power. Journal of Symbolic Logic 38 (1):159-161.
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  41. Andrzej Grzegorczyk (1957). Bemerkungen Über Das Verstehen Logischer Gesetze. Journal of Symbolic Logic 22 (3):330-330.
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  42. Andrzej Grzegorczyk (1950). Book Reviews. [REVIEW] Synthese 8 (6/7):325.
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  43. Andrzej Grzegorczyk (1998). Czy istnieje ścisłość poza wymaganiami logiki? Studia Semiotyczne 21:47-55.
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  44. Andrzej Grzegorczyk (2002). Czy i jak formalizować filozofię. Przeglad Filozoficzny - Nowa Seria 41 (1):201-207.
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  45. Andrzej Grzegorczyk (1994). Classical, Relativistic and Constructivist Ways of Asserting Theorems. In Jan Wolenski (ed.), Philosophical Logic in Poland. Kluwer 19--31.
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  46. Andrzej Grzegorczyk (1987). Dialtciics and Humanism No. 1 1987. Dialectics and Humanism 14:167.
     
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  47. Andrzej Grzegorczyk (2010). Drobny Komentarz Do Swinburne’A. Przeglad Filozoficzny - Nowa Seria 73.
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  48. Andrzej Grzegorczyk (1999). Dysonans poznawczy. Jak o nim mówić i kto jest jego odkrywcą. Przeglad Filozoficzny - Nowa Seria 31 (3):153-165.
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  49. Andrzej Grzegorczyk (1993). Dyskusja z Kazimierzem Ajdukiewiczem. Przeglad Filozoficzny - Nowa Seria 6 (2):115-116.
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  50. Andrzej Grzegorczyk (2002). Europe: Discovering the Meaning of Existence. Dialogue and Universalism 12 (6-7):111-126.
     
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