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    Wyświetlanie 1-4 z 4
    Tytuł:
    Decomposition of Congruence Modular Algebras into Atomic, Atomless Locally Uniform and Anti-Uniform Parts
    Autorzy:
    Staruch, Bogdan
    Staruch, Bożena
    Powiązania:
    https://bibliotekanauki.pl/articles/749904.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
    Tematy:
    universal algebra
    algebraic lattice
    congruence lattice
    atomic lattice
    modular lattice
    uniform lattice
    subdirect product
    star-product
    decomposition of algebra
    Opis:
    We describe here a special subdirect decomposition of algebras with modular congruence lattice. Such a decomposition (called a star-decomposition) is based on the properties of the congruence lattices of algebras. We consider four properties of lattices: atomic, atomless, locally uniform and anti-uniform. In effect, we describe a star-decomposition of a given algebra with modular congruence lattice into two or three parts associated to these properties.
    Źródło:
    Bulletin of the Section of Logic; 2016, 45, 3/4
    0138-0680
    2449-836X
    Pojawia się w:
    Bulletin of the Section of Logic
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Characterization of Birkhoff’s Conditions by Means of Cover-Preserving and Partially Cover-Preserving Sublattices
    Autorzy:
    Łazarz, Marcin
    Powiązania:
    https://bibliotekanauki.pl/articles/749906.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
    Tematy:
    Birkhoff’s conditions
    semimodularity conditions
    modular lattice
    discrete lattices
    upper continuous lattice
    strongly atomic lattice
    cover-preserving sublattice
    cell
    4-cell lattice
    Opis:
    In the paper we investigate Birkhoff’s conditions (Bi) and (Bi*). We prove that a discrete lattice L satisfies the condition (Bi) (the condition (Bi*)) if and only if L is a 4-cell lattice not containing a cover-preserving sublattice isomorphic to the lattice S*7 (the lattice S7). As a corollary we obtain a well known result of J. Jakub´ık from [6]. Furthermore, lattices S7 and S*7 are considered as so-called partially cover-preserving sublattices of a given lattice L, S7 ≪ L and S7 ≪ L, in symbols. It is shown that an upper continuous lattice L satisfies (Bi*) if and only if L is a 4-cell lattice such that S7 ≪/ L. The final corollary is a generalization of Jakubík’s theorem for upper continuous and strongly atomic lattices. Keywords: Birkhoff’s conditions, semimodularity conditions, modular lattice, discrete lattices, upper continuous lattice, strongly atomic lattice, cover-preserving sublattice, cell, 4-cell lattice.  
    Źródło:
    Bulletin of the Section of Logic; 2016, 45, 3/4
    0138-0680
    2449-836X
    Pojawia się w:
    Bulletin of the Section of Logic
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microstate of Basic Phase of High-Alloyed Ferritic Steels
    Autorzy:
    Baranov, M.A
    Dubov, E.A.
    Kawałek, Anna
    Powiązania:
    https://bibliotekanauki.pl/articles/27315823.pdf
    Data publikacji:
    2019
    Wydawca:
    STE GROUP
    Tematy:
    high-alloyed ferritic steels
    atomic-discrete simulation
    crystal lattice of BP
    wysokostopowe stale ferrytyczne
    symulacja dyskretna
    sieć krystaliczna
    Opis:
    In according with the stated conception the purpose of the present work is the reconstruction of some of innumerable microstates of α phase of ferritic steels, definition of its macroparameters and their subsequent comparison with indicators of mechanical properties of industrially let out steels. The establishment of a correlation between the measured indicators of mechanical properties of already created materials and the calculated state parameters of their basic phase opens an opportunity of mechanical properties prediction of materials in dependence on their prehistory that as a matter of fact represents the central task of material science. Simulation of α-phase state of series of industrially let out ferritic steels and alloys is executed in the assumption of identity of its composition to composition of steel or alloy as a whole. The correlation between indicators of mechanical properties of steels and alloys and state parameters of their basic phase is traced.
    Źródło:
    New Trends in Production Engineering; 2019, 2, 2; 312-320
    2545-2843
    Pojawia się w:
    New Trends in Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Xe and Kr bonding abilities in the single crystal oxygen vacancies of the uranium based fuel
    Autorzy:
    Dąbrowski, L.
    Szuta, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/147880.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    noble gases
    chemical bond
    UO2 single crystal
    valence electron density distribution
    atomic force constants
    bond energy
    crystal lattice
    Opis:
    The valence electron density distribution of krypton and xenon located in the oxygen vacancy and in its nearest neighbourhood was performed by application of the method “ab initio”. The results are presented on the graphs. The bonding energies of krypton and xenon in the uranium dioxide crystal lattice were calculated. It was found also that krypton and xenon cause a local increase of UO1.75Xe0.25 and UO1.75Kr0.25 unit cell and cause its deformation what is presented in tables. The force constants of krypton and xenon were also assigned what gives evidence about the strong bond of krypton and xenon with the UO1.75Xe0.25 and UO1.75Kr0.25 single crystal lattice. Obtained results are compared with the analogical studies of He atom incorporation into UO2 single crystal lattice.
    Źródło:
    Nukleonika; 2012, 57, 1; 95-100
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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