Bulletin of the Section of Logic 10/3 (1981)


  1. Authors:
    Janis CIRULIS

    Title:
    On the EK-fragments of positive and classical propositional calculus

    Pages:
    100-103
    File:
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    Abstract ( + )
  2. Authors:
    Ewa GRACZYNSKA

    Title:
    On regular and symmetric identities

    Pages:
    104-107
    File:
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  3. Authors:
    Marek PALASINSKI and Barbara WOZNIAKOWSKA

    Title:
    An equational basis for commutative BCK-algebras

    Pages:
    108-112
    File:
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  4. Authors:
    Wieslaw DZIOBIAK

    Title:
    On matrices characteristic of relevant logics

    Pages:
    113-115
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  5. Authors:
    Teodor STEPIEN

    Title:
    Craig-Godel-Lindenbaum's property and Sobicinski-Tarski's property in propositional calculi

    Pages:
    116-121
    File:
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  6. Authors:
    Hien Huy BUI and Istvan NEMETI

    Title:
    Problems with the category theoretic notions of ultraproducts

    Pages:
    122-127
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  7. Authors:
    Andrzej WRONSKI

    Title:
    Splittings of lattices of quasivarieties

    Pages:
    128-129
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  8. Authors:
    Andrzej WRONSKI

    Title:
    Quasivarieties of Heyting algebras

    Pages:
    130-134
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  9. Authors:
    Jacek K.KABZINSKI

    Title:
    On equivalential fragment of the implicative extentional consequence

    Pages:
    135-143
    File:
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