109 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.  32
    Polish Analytical Philosophy. A Survey and A Comparison with British Analytical Philosophy.C. Lejewski - 1969 - Philosophical Quarterly 19 (77):363.
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  5.  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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  6.  66
    Consistency of Lesniewski's Mereology.Czesław Lejewski - 1969 - Journal of Symbolic Logic 34 (3):321-328.
  7.  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.
  8.  20
    Syntax and Semantics of Ordinary Language.Czesław Lejewski & William Haas - 1975 - Aristotelian Society Supplementary Volume 49 (1):127 - 169.
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  9.  9
    Stoic Logic.Czesław Lejewski - 1954 - Journal of Symbolic Logic 19 (1):71-72.
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  10.  51
    Aristotle's Syllogistic and its Extensions.Czes?aw Lejewski - 1963 - Synthese 15 (1):125 - 154.
  11. Proper Names.P. F. Strawson & C. Lejewski - 1957 - Aristotelian Society Supplementary Volume 31:191-256.
     
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  12.  30
    On Prosleptic Syllogisms.Czesław Lejewski - 1961 - Notre Dame Journal of Formal Logic 2 (3):158-176.
  13.  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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  14.  13
    A System of Logic for Bicategorial Ontology.Czeslaw Lejewski - 1974 - Journal of Philosophical Logic 3 (3):265 - 283.
  15.  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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  16.  53
    On Implicational Definitions.Czesław Lejewski - 1958 - Studia Logica 8 (1):189 - 211.
  17.  8
    Studies in the Axiomatic Foundations of Boolean Algebra. III.Czesław Lejewski - 1961 - Notre Dame Journal of Formal Logic 2 (2):79-93.
  18.  18
    Studies in the Axiomatic Foundations of Boolean Algebra. I.Czesław Lejewski - 1960 - Notre Dame Journal of Formal Logic 1 (1-2):23-47.
  19.  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.
  20.  5
    Axioms for the Part Relation.Czesław Lejewski - 1957 - Journal of Symbolic Logic 22 (2):213-214.
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  21.  6
    Discussion.M. Dummett, C. Lejewski, W. V. Quine & F. Sommers - 1974 - Journal of Symbolic Logic 39 (2):361-362.
  22.  42
    Logic and Non-Existence.Czeslaw 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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  23.  48
    A Note on Leśniewski's Axiom System for the Mereological Notion of Ingredient or Element.C. Lejewski - 1983 - Topoi 2 (1):63-71.
  24.  11
    Accommodating the Informal Notion of Class Within the Framework of Lesaniewski's Ontology.Czestaw Lejewski - 1985 - Dialectica 39 (3):217-241.
    SummaryInterpreted distributively the sentence‘Indiana is a member of the class of American federal states’means the same as‘Indiana is an American federal state’. In accordance with the collective sense of class expressions the sentence can be understood as implying that Indiana is a part of the country whose capital city is Washington. Neither interpretation appears to accommodate all the intuitions connected with the informal notion of class. A closer accommodation can be achieved, it seems, if class expressions are interpreted as verb‐like (...)
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  25.  25
    Reviews. [REVIEW]Czeslaw Lejewski - 1959 - British Journal for the Philosophy of Science 9 (36):270-271.
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  26.  24
    Reviews. [REVIEW]Czeslaw Lejewski - 1955 - British Journal for the Philosophy of Science 5 (20):172-172.
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  27.  23
    On Prosleptic Premisses.Czesław Lejewski - 1976 - Notre Dame Journal of Formal Logic 17 (1):1-18.
  28.  22
    Reviews. [REVIEW]Czeseaw Lejewski - 1957 - British Journal for the Philosophy of Science 8 (30):249-251.
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  29.  7
    Parts of Speech.Roland Hall & C. Lejewski - 1965 - Aristotelian Society Supplementary Volume 39 (1):173-204.
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  30.  14
    A Single Axiom for the Mereological Notion of Proper Part.Czesław Lejewski - 1967 - Notre Dame Journal of Formal Logic 8 (4):279-285.
  31.  4
    Outline Of An Ontology.Czeslaw Lejewski - 1976 - Bulletin of the John Rylands Library 59 (1):127-147.
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  32.  11
    Studies in the Axiomatic Foundations of Boolean Algebra. II.Czesław Lejewski - 1960 - Notre Dame Journal of Formal Logic 1 (3):91-106.
  33.  10
    Reviews. [REVIEW]Czeslaw Lejewski - 1956 - British Journal for the Philosophy of Science 6 (24):249-251.
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  34.  8
    Reviews. [REVIEW]Czeslaw Lejewski - 1963 - British Journal for the Philosophy of Science 13 (52):249-251.
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  35.  20
    The Scientific World-Perspective and Other Essays, 1931–1963, by Ajdukiewicz Kazimierz. Edited and with an Introduction by Giedymin Jerzy. Synthese Library, Vol. 108. D. Reidel Publishing Company, Dordrecht and Boston 1978, LIII + 378 Pp.Giedymin Jerzy. Editor's Preface. Pp. IX–XII.Giedymin Jerzy. Ajdukiewicz's Life and Personality. Pp. XIII–XVI.Giedymin Jerzy. Radical Conventionalism, its Background and Evolution: Poincaré, LeRoy, Ajdukiewicz. Pp. XIX–LIII.Ajdukiewicz Kazimierz. On the Meaning of Expressions. Pp. 1–34. English Translation by Jerzy Giedymin of XXXVIII 536.Ajdukiewicz Kazimierz. Language and Meaning. Pp. 35–66. English Translation by John Wilkinson of 2259.Ajdukiewicz Kazimierz. The World-Picture and the Conceptual Apparatus. Pp. 67–89. English Translation by John Wilkinson of XXXVIII 537.Ajdukiewicz Kazimierz. On the Applicability of Pure Logic to Philosophical Problems. Pp. 90–94. English Translation by Jerzy Giedymin of XXXVIII 536.Ajdukiewicz Kazimierz. On the Probl.C. Lejewski - 1978 - Journal of Symbolic Logic 47 (2):457-463.
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  36.  3
    Essay Review.C. Lejewski - 1983 - History and Philosophy of Logic 4 (1-2):91-96.
    J. PELC (ed.) Semiotics in Poland 1894-1969. Translation from the Polish by 0. Wojtasiewicz. Dordrecht, Boston and London; D. Reidel Publishing Company; Warsaw: PWN?Polish Scientific Publishers; 1981. xxvi + 504 pp. Df. 105/ $49.50.
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  37.  23
    Foundations: Essays in Philosophy, Logic, Mathematics and Economics By F. P. Ramsey Edited by D. H. Mellor London and Henley: Routledge and Kegan Paul, 1978, Viii + 287 Pp., £9.50. [REVIEW]C. Lejewski - 1979 - Philosophy 54 (208):259-.
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  38.  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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  39.  10
    A Note Concerning the Notion of Mereological Class.Czesław Lejewski - 1978 - Notre Dame Journal of Formal Logic 19 (2):251-263.
  40.  21
    Time and Modality, By A. N. Prior, Clarendon Press: Oxford University Press, 1957. Pp. Viii + 148. [REVIEW]Czeslaw Lejewski - 1959 - Philosophy 34 (128):56-.
  41.  10
    Symposium: Parts of Speech.Roland Hall & C. Lejewski - 1965 - Aristotelian Society Supplementary Volume 39:173 - 204.
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  42. Symposium: Parts of Speech.Roland Hall & C. Lejewski - 1965 - Proceedings of the Aristotelian Society, Supplementary Volumes( 39:173-204.
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  43. A Contribution to Lesniewski's Mereology.Czesław Lejewski - 1954 - Polish Society of Arts and Sciences Abroad 5:43-50.
  44.  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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  45.  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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  46. Ancient Logic.Czesław Lejewski - 1967 - In Paul Edwards (ed.), The Encyclopedia of Philosophy. New York: Macmillan. pp. 513-520.
     
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  47. A New Axiom for Mereology.Czesław Lejewski - 1955 - Polish Society of Arts and Sciences Abroad 6:65-70.
  48.  20
    A Note Concerning the Notion of Mereological Class. Postscript.Czesław Lejewski - 1980 - Notre Dame Journal of Formal Logic 21:679-682.
  49.  14
    A. N. Prior. Existence in Leśniewski and in Russell. Formal Systems and Recursive Functions, Proceedings of the Eighth Logic Colloquium, Oxford, July 1963, Edited by J. N. Crossley and M. A. E. Dummett, Studies in Logic and the Foundations of Mathematics, North-Holland Publishing Company, Amsterdam1965, Pp. 149–155. [REVIEW]C. Lejewski - 1975 - Journal of Symbolic Logic 40 (3):458.
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  50.  34
    A Propositional Calculus in Which Three Mutually Undefinable Functors Are Used as Primitive Terms.Czesław Lejewski - 1968 - Studia Logica 22 (1):17 - 50.
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