51 found
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  1.  91
    Logic and Existence.Czesław Lejewski - 1954 - British Journal for the Philosophy of Science 5 (18):104-119.
  2.  24
    Logic and Existence.Czesław Lejewski - 1954 - In Jan T. J. Srzednicki, V. F. Rickey & J. Czelakowski (eds.), British Journal for the Philosophy of Science. Distributors for the United States and Canada, Kluwer Boston. pp. 45--58.
  3.  63
    Systems of Leśniewski's Ontology with the Functor of Weak Inclusion as the Only Primitive Term.Czesław Lejewski - 1977 - Studia Logica 36 (4):323-349.
  4.  30
    A Re-Examination of the Russellian Theory of Descriptions.Czesław Lejewski - 1960 - Philosophy 35 (132):14-29.
    The theory of descriptions occupies a very prominent place in Russell's system of logic and indeed in his system of philosophy. Since the publication of the now classical paper “On Denoting” in Mind for 1905 the theory had been incorporated into Principia Mathematica , the first volume of which appeared in 1910. In 1918 Russell discussed descriptions in his lectures on the Philosophy of Logical Atomism, which subsequently were published in The Monist for 1919. A very lucid exposition of the (...)
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  5.  66
    Consistency of Lesniewski's Mereology.Czesław Lejewski - 1969 - Journal of Symbolic Logic 34 (3):321-328.
  6.  20
    On Leśniewski's Ontology.Czesław Lejewski - 1984 - In Jan T. J. Srzednicki, V. F. Rickey & J. Czelakowski (eds.), Journal of Symbolic Logic. Distributors for the United States and Canada, Kluwer Boston. pp. 123--148.
  7.  20
    Syntax and Semantics of Ordinary Language.Czesław Lejewski & William Haas - 1975 - Aristotelian Society Supplementary Volume 49 (1):127 - 169.
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  8.  9
    Stoic Logic.Czesław Lejewski - 1954 - Journal of Symbolic Logic 19 (1):71-72.
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  9.  30
    On Prosleptic Syllogisms.Czesław Lejewski - 1961 - Notre Dame Journal of Formal Logic 2 (3):158-176.
  10.  4
    Quantification and Ontological Commitment.Czesław Lejewski - 1970 - In Hermann Bondi, Wolfgang Yourgrau & Allen duPont Breck (eds.), Physics, Logic, and History. New York: Plenum Press. pp. 173--190.
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  11.  7
    Consistency of Leśniewski's Mereology.Czesław Lejewski - 1984 - In Jan T. J. Srzednicki, V. F. Rickey & J. Czelakowski (eds.), Journal of Symbolic Logic. Distributors for the United States and Canada, Kluwer Boston. pp. 231--238.
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  12.  53
    On Implicational Definitions.Czesław Lejewski - 1958 - Studia Logica 8 (1):189 - 211.
  13.  8
    Studies in the Axiomatic Foundations of Boolean Algebra. III.Czesław Lejewski - 1961 - Notre Dame Journal of Formal Logic 2 (2):79-93.
  14.  18
    Studies in the Axiomatic Foundations of Boolean Algebra. I.Czesław Lejewski - 1960 - Notre Dame Journal of Formal Logic 1 (1-2):23-47.
  15.  18
    A Note on a Problem Concerning the Axiomatic Foundations of Mereology.Czesław Lejewski - 1962 - Notre Dame Journal of Formal Logic 4 (2):135-139.
  16.  5
    Axioms for the Part Relation.Czesław Lejewski - 1957 - Journal of Symbolic Logic 22 (2):213-214.
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  17.  42
    Logic and Non-Existence.Czesław Lejewski - 1985 - Grazer Philosophische Studien 25 (1):209-234.
    An attempt is made in the present essay to accommodate various senses of the notion of existence and ofthat of non-existence within the framework of logic. With this aim in view a system of Lesniewski's Ontology, referred to as System S, is outlined. Equipped with appropriate definitions and illustrated with a selection of theses it offers a logical theory of existence and non-existence. The usefulness of the theory is then tested by interpreting in its terms some of the principal notions (...)
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  18.  23
    On Prosleptic Premisses.Czesław Lejewski - 1976 - Notre Dame Journal of Formal Logic 17 (1):1-18.
  19.  13
    A Single Axiom for the Mereological Notion of Proper Part.Czesław Lejewski - 1967 - Notre Dame Journal of Formal Logic 8 (4):279-285.
  20.  11
    Studies in the Axiomatic Foundations of Boolean Algebra. II.Czesław Lejewski - 1960 - Notre Dame Journal of Formal Logic 1 (3):91-106.
  21.  13
    A Contribution to the Study of Extended Mereologies.Czesław Lejewski - 1973 - Notre Dame Journal of Formal Logic 14 (1):55-67.
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  22.  9
    A Note Concerning the Notion of Mereological Class.Czesław Lejewski - 1978 - Notre Dame Journal of Formal Logic 19 (2):251-263.
  23. A Contribution to Lesniewski's Mereology.Czesław Lejewski - 1954 - Polish Society of Arts and Sciences Abroad 5:43-50.
  24.  15
    Antoni Korcik. Przyczynek Do Historii Rachunku Zdań . Polish, with Brief Abstracts in Russian and in English. Studio Logica , Vol. 1 , Pp. 247–253. [REVIEW]Czesław Lejewski - 1955 - Journal of Symbolic Logic 20 (2):172.
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  25.  11
    Antoni Korcik. Zdania egzyslencjalne u Arystotelesa . Polonia sacra , vol. 6 no. 1 , pp. 46–50.Czesław Lejewski - 1955 - Journal of Symbolic Logic 20 (2):172.
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  26. Ancient Logic.Czesław Lejewski - 1967 - In Paul Edwards (ed.), The Encyclopedia of Philosophy. New York: Macmillan. pp. 513-520.
     
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  27. A New Axiom for Mereology.Czesław Lejewski - 1955 - Polish Society of Arts and Sciences Abroad 6:65-70.
  28.  20
    A Note Concerning the Notion of Mereological Class. Postscript.Czesław Lejewski - 1980 - Notre Dame Journal of Formal Logic 21:679-682.
  29.  34
    A Propositional Calculus in Which Three Mutually Undefinable Functors Are Used as Primitive Terms.Czesław Lejewski - 1968 - Studia Logica 22 (1):17 - 50.
  30. Co filozofia zawdzięcza apostacie filozofii?Czesław Lejewski - 1988 - Studia Filozoficzne 271 (6-7).
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  31.  12
    Czerwiński Zbigniew. O Paradoksie Implikacji . Studia Logica, Vol. 7 , Pp. 265–271.Czesław Lejewski - 1959 - Journal of Symbolic Logic 24 (3):271-271.
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  32.  23
    Günther Patzig. Die Aristotelische Syllogistik. Logisch-philologische Untersuchungen über das Buch A der “Ersten Analytiken.” Abhandlungen der Akademie der Wissenschaften in Göttingen, Philologisch-historische Klasse, ser. 3 no. 42. Vandenhoeck & Ruprecht, Göttingen1959, 207 pp. [REVIEW]Czesław Lejewski - 1966 - Journal of Symbolic Logic 31 (1):102-104.
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  33.  7
    Kubiński Tadeusz. Nazwy Nieostre . Polish, with English and Russian Summaries. Studia Logica, Vol. 7 , Pp. 115–179.Czesław Lejewski - 1959 - Journal of Symbolic Logic 24 (3):270-271.
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  34.  15
    Logic and Non-Existence.Czesław Lejewski - 1985 - Grazer Philosophische Studien 25 (1):209-234.
    An attempt is made in the present essay to accommodate various senses of the notion of existence and ofthat of non-existence within the framework of logic. With this aim in view a system of Lesniewski's Ontology, referred to as System S, is outlined. Equipped with appropriate definitions and illustrated with a selection of theses it offers a logical theory of existence and non-existence. The usefulness of the theory is then tested by interpreting in its terms some of the principal notions (...)
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  35. Logika, ontologia, metafizyka.Czesław Lejewski - 1993 - Filozofia Nauki 1.
    According to the author, no body of theories deserves to be called philosophy unless some of these theories and problems fall within the province of metphysics. No problems deserves the name of metaphysics unless some of them add up to constitute ontology. The author presents the reistic version of the science of being as the union of Protothetic, Ontology, Mereology and Chronology. The next possible step in the construction of the reistic ontology will be Stereology (a kind of reistic geometry).
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  36.  14
    Mates Benson. Stoic Logic. University of California Publications in Philosophy, Vol. 26. University of California Press, Berkeley and Los Angeles 1953, 148 Pp. [REVIEW]Czesław Lejewski - 1954 - Journal of Symbolic Logic 19 (1):71-72.
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  37.  7
    Michałowski Witold. Zagadnienie nazw pustych w sylogistyce Arystotelesa w świetle “ontologii” Leśniewskiego . Roczniki filozoficzne, vol. 5 no. 2 , pp. 65–95, 227. [REVIEW]Czesław Lejewski - 1962 - Journal of Symbolic Logic 27 (1):117-117.
  38.  63
    New Books. [REVIEW]Czesław Lejewski, W. K. C. Guthrie, Peter Winch, Frederick C. Copleston & R. Harré - 1964 - Mind 73 (291):446-461.
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  39. "Nomological Statements and Admissible Operations." By Hans Reichenbach. [REVIEW]Czesław Lejewski - 1955 - British Journal for the Philosophy of Science 5 (20):343.
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  40. O dramatycznej fazie rozwojowej pansomatyzmu Kotarbińskiego.Czesław Lejewski - 1994 - Filozofia Nauki 1.
    As the author sees it, Tadeusz Kotarbiński's reism is an ontology with semantical ramifications. Contrary to Kazimierz Ajdukiewicz's view the reist is not commited to any particular categorially determined language; he has to use, and is at liberty to do so, the language of whoever happens to be his opponent always provide that it is a categorially determined language. Contrary to Ajdukiewicz's opinion, the positive ontological thesis of resim (i.e. the thesis that for all a and b, if a is (...)
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  41. Propositional Attitudes and Extensionality.Czesław Lejewski - 1981 - In Edgar Morscher, Otto Neumaier & Gerhard Zecha (eds.), Philosophie Als Wissenschaft. Comes Verlag. pp. 211--228.
     
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  42.  4
    Patzig Günther. Die Aristotelische Syllogistik. Logisch-philologische Untersuchungen über das Buch A der” Ersten Analytiken” Second, revised, edition of XXXI 102. Abhandlungen der Akademie der Wissenschaften in Göttingen, Philologisch-historische Klasse, ser. 3 no. 42. Vandenhoeck & Ruprecht, Göttingen 1963, VI + 208 pp. [REVIEW]Czesław Lejewski - 1967 - Journal of Symbolic Logic 32 (1):105-105.
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  43.  2
    Parry William Tuthill. A New Symbolism for the Propositional Calculus. [REVIEW]Czesław Lejewski - 1958 - Journal of Symbolic Logic 23 (1):63-63.
  44.  7
    Review: Boleslaw Sobocinski, Z Badan nad Aksjomatyka Prototetyki Stanislawa Lesniewskiego. [REVIEW]Czesław Lejewski - 1956 - Journal of Symbolic Logic 21 (3):325-325.
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  45.  3
    Rescher Nicholas. Axioms for the Part Relation. Philosophical Studies , Vol. 6 , Pp. 8–11.Czesław Lejewski - 1957 - Journal of Symbolic Logic 22 (2):213-214.
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  46.  6
    Review: Nicholas Rescher, Axioms for the Part Relation. [REVIEW]Czesław Lejewski - 1957 - Journal of Symbolic Logic 22 (2):213-214.
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  47.  1
    Review: William Tuthill Parry, A New Symbolism for the Propositional Calculus; Gerald B. Standley, Ideographic Computation in the Propositional Calculus. [REVIEW]Czesław Lejewski - 1958 - Journal of Symbolic Logic 23 (1):63-63.
  48.  9
    Sobociński Bolesław. Z badań nad aksjomatyką prototetyki Stanisława Leśniewskiego. Rocznik Polskiego Towarzystwa Naukowego na Obczyźnie , rok 1953–1954 , pp. 18–20. [REVIEW]Czesław Lejewski - 1956 - Journal of Symbolic Logic 21 (3):325-325.
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  49.  7
    Słupecki Jerzy. St. Leśniewski's Protothetics. English, with Abstracts in Polish and Russian. Studia Logica , Vol. 1 , Pp. 44–112. See Errata, Ibid., P. 299. [REVIEW]Czesław Lejewski - 1956 - Journal of Symbolic Logic 21 (2):188-191.
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  50.  18
    Stanisław Kamiński. Hobbesa Teoria Definicji . Polish, with Russian and English Summaries. Studia Logica, Vol. 7 , Pp. 43–69. [REVIEW]Czesław Lejewski - 1964 - Journal of Symbolic Logic 29 (1):49.
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