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Wyświetlanie 1-15 z 52
Tytuł:
Some properties of congurence relations on orthomodular lattices
Autorzy:
Dorfer, Gerhard
Powiązania:
https://bibliotekanauki.pl/articles/728766.pdf
Data publikacji:
2001
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
orthomodular lattice
congruence relation
congruence-regular
congruence-uniform
congruence-permutable
Opis:
In this paper congruences on orthomodular lattices are studied with particular regard to analogies in Boolean algebras. For this reason the lattice of p-ideals (corresponding to the congruence lattice) and the interplay between congruence classes is investigated. From the results adduced there, congruence regularity, uniformity and permutability for orthomodular lattices can be derived easily.
Źródło:
Discussiones Mathematicae - General Algebra and Applications; 2001, 21, 1; 57-66
1509-9415
Pojawia się w:
Discussiones Mathematicae - General Algebra and Applications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Some modifications of congruence permutability and dually congruence regular varietie
Autorzy:
Chajda, Ivan
Eigenthaler, Günther
Powiązania:
https://bibliotekanauki.pl/articles/728754.pdf
Data publikacji:
2001
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
congruence regularity
local congruence regularity
dual congruence regularity
local n-permutability
Opis:
It is well known that every congruence regular variety is n-permutable (in the sense of [9]) for some n ≥ 2. For the explicit proof see e.g. [2]. The connections between this n and Mal'cev type characterizations of congruence regularity were studied by G.D. Barbour and J.G. Raftery [1]. The concept of local congruence regularity was introduced in [3]. A common generalization of congruence regularity and local congruence regularity was given in [6] under the name "dual congruence regularity with respect to a unary term g". The natural problem arises what modification of n-permutability is satisfied by dually congruence regular varieties. The aim of this paper is to find out such a modification, to characterize varieties satisfying it by a Mal'cev type condition and to show connections with normally presented varieties (see e.g. [5], [8], [11]). The latter concept was introduced already by J. P≥onka under a different term; the names "normal identity" and "normal variety" were firstly used by E. Graczyńska in [8].
Źródło:
Discussiones Mathematicae - General Algebra and Applications; 2001, 21, 2; 165-174
1509-9415
Pojawia się w:
Discussiones Mathematicae - General Algebra and Applications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Congruences on bands of π-groups
Autorzy:
Maity, Sunil
Powiązania:
https://bibliotekanauki.pl/articles/728928.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
group congruence
completely regular semigroup congruence
Opis:
A semigroup S is said to be completely π-regular if for any a ∈ S there exists a positive integer n such that aⁿ is completely regular. The present paper is devoted to the study of completely regular semigroup congruences on bands of π-groups.
Źródło:
Discussiones Mathematicae - General Algebra and Applications; 2013, 33, 1; 5-11
1509-9415
Pojawia się w:
Discussiones Mathematicae - General Algebra and Applications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Congruence submodularity
Autorzy:
Chajda, Ivan
Halaš, Radomír
Powiązania:
https://bibliotekanauki.pl/articles/728993.pdf
Data publikacji:
2002
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
congruence lattice
modularity
congruence k-submodularity
Opis:
We present a countable infinite chain of conditions which are essentially weaker then congruence modularity (with exception of first two). For varieties of algebras, the third of these conditions, the so called 4-submodularity, is equivalent to congruence modularity. This is not true for single algebras in general. These conditions are characterized by Maltsev type conditions.
Źródło:
Discussiones Mathematicae - General Algebra and Applications; 2002, 22, 2; 131-139
1509-9415
Pojawia się w:
Discussiones Mathematicae - General Algebra and Applications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Filters of lattices with respect to a congruence
Autorzy:
Sambasiva Rao, M.
El-Mohsen Badawy, Abd
Powiązania:
https://bibliotekanauki.pl/articles/729197.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
congruence
filter
closure operator
θ-filter
congruence lattice
Opis:
Some properties of filters on a lattice L are studied with respect to a congruence on L. The notion of a θ-filter of L is introduced and these filters are then characterized in terms of classes of θ. For distributive L, an isomorphism between the lattice of θ-filters of L and the lattice of filters of $L_{/θ}$ is obtained.
Źródło:
Discussiones Mathematicae - General Algebra and Applications; 2014, 34, 2; 213-219
1509-9415
Pojawia się w:
Discussiones Mathematicae - General Algebra and Applications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the lattice of congruences on inverse semirings
Autorzy:
Bhuniya, Anwesha
Bhuniya, Anjan
Powiązania:
https://bibliotekanauki.pl/articles/728800.pdf
Data publikacji:
2008
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
inverse semirings
trace
kernel
Clifford congruence
least Clifford congruence
Opis:
Let S be a semiring whose additive reduct (S,+) is an inverse semigroup. The relations θ and k, induced by tr and ker (resp.), are congruences on the lattice C(S) of all congruences on S. For ρ ∈ C(S), we have introduced four congruences $ρ_{min}, ρ_{max}, ρ^{min}$ and $ρ^{max}$ on S and showed that $ρθ = [ρ_{min},ρ_{max}]$ and $ρκ = [ρ^{min},ρ^{max}]$. Different properties of ρθ and ρκ have been considered here. A congruence ρ on S is a Clifford congruence if and only if $ρ_{max}$ is a distributive lattice congruence and $ρ^{max}$ is a skew-ring congruence on S. If η (σ) is the least distributive lattice (resp. skew-ring) congruence on S then η ∩ σ is the least Clifford congruence on S.
Źródło:
Discussiones Mathematicae - General Algebra and Applications; 2008, 28, 2; 193-208
1509-9415
Pojawia się w:
Discussiones Mathematicae - General Algebra and Applications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Congruences on semilattices with section antitone involutions
Autorzy:
Chajda, Ivan
Powiązania:
https://bibliotekanauki.pl/articles/729025.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
semilattice
section
antitone involution
congruence kernel
filter
congruence distributivity
3-permutability
Opis:
We deal with congruences on semilattices with section antitone involution which rise e.g., as implication reducts of Boolean algebras, MV-algebras or basic algebras and which are included among implication algebras, orthoimplication algebras etc. We characterize congruences by their kernels which coincide with semilattice filters satisfying certain natural conditions. We prove that these algebras are congruence distributive and 3-permutable.
Źródło:
Discussiones Mathematicae - General Algebra and Applications; 2010, 30, 2; 207-215
1509-9415
Pojawia się w:
Discussiones Mathematicae - General Algebra and Applications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spouses’ fit and marriage satisfaction in late adulthood
Autorzy:
Brudek, Paweł
Korulczyk, Tomasz
Korulczyk, Natalia
Powiązania:
https://bibliotekanauki.pl/articles/2127263.pdf
Data publikacji:
2019-04-08
Wydawca:
Katolicki Uniwersytet Lubelski Jana Pawła II. Towarzystwo Naukowe KUL
Tematy:
spouses’ fit
personality congruence
values congruence
marital satisfaction
late adulthood
Opis:
Although marital satisfaction is intensively explored in the psychological literature at present, there are few papers strictly focused on spouse fit in late adulthood. The aim of the present study was to determine whether spouses’ personality fit and values fit are associated with marital satisfaction. To test this, we examined 60 Polish married couples (120 participants) aged 60-75. We used the following measures: NEO-PI-R (as adapted by J. Siuta), Scheler Values Scale (P. Brzozowski), and the Well-Matched Marriage Questionnaire (Plopa & Rostowski). Due to the nonindependence of dyads, data was analyzed in the single-level paradigm, and the level of fit was estimated by Gower Agreement Index (J. C. Gower). The results yielded by SEM path analysis indicate that spouses’ personality fit is associated with the satisfaction of both spouses, while spouses’ values fit, under-stood objectively in accordance with Scheler’s theory, is not related to their satisfaction. The findings may be useful in psychological practice such as marriage counselling and marital therapy.
Źródło:
Roczniki Psychologiczne; 2018, 21, 1; 69-85
1507-7888
Pojawia się w:
Roczniki Psychologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Congruence classes in Brouwerian semilattices
Autorzy:
Chajda, Ivan
Länger, Helmut
Powiązania:
https://bibliotekanauki.pl/articles/729047.pdf
Data publikacji:
2001
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
congruence class
Brouwerian semilattice
ideal
Opis:
Brouwerian semilattices are meet-semilattices with 1 in which every element a has a relative pseudocomplement with respect to every element b, i. e. a greatest element c with a∧c ≤ b. Properties of classes of reflexive and compatible binary relations, especially of congruences of such algebras are described and an abstract characterization of congruence classes via ideals is obtained.
Źródło:
Discussiones Mathematicae - General Algebra and Applications; 2001, 21, 2; 229-237
1509-9415
Pojawia się w:
Discussiones Mathematicae - General Algebra and Applications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Congruence lattices of free lattices in non-distributive varieties
Autorzy:
Ploščica, Miroslav
Tůma, Jiří
Wehrung, Friedrich
Powiązania:
https://bibliotekanauki.pl/articles/966045.pdf
Data publikacji:
1998
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
diamond
congruence splitting lattice
Kuratowski's Theorem
Uniform Refinement Property
congruence lattice
pentagon
Źródło:
Colloquium Mathematicum; 1998, 76, 2; 269-278
0010-1354
Pojawia się w:
Colloquium Mathematicum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Deutsche und polnische Kasusrollen im Hinblick auf deren Interferenz
German and Polish case rolls with regard to their interference
Autorzy:
Sadziński, Witold
Powiązania:
https://bibliotekanauki.pl/articles/679739.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
diathesis
case rolls
congruence
presupposition
synesis
Opis:
A contrastive study can be designed as a presentation or investigation procedure. In the present contribution, they are used in a complementary way by additionally examining the already numerically divergent pure cases of German and Polish with respect to their differing syntactic roles. Particular attention was paid to the individual language-specific case change – preferably in the active-passive diathesis, under the influence of negation, and in relation to numbers / measures and quantities.
–
Źródło:
Acta Universitatis Lodziensis. Folia Germanica; 2017, 13; 33-46
2449-6820
Pojawia się w:
Acta Universitatis Lodziensis. Folia Germanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reliability of methodological and psychometric characteristics of the questionnaire of congruence of personal and organizational values
Autorzy:
Vveinhardt, Jolita
Gulbovaite, Evelina
Powiązania:
https://bibliotekanauki.pl/articles/18874223.pdf
Data publikacji:
2018
Wydawca:
Instytut Badań Gospodarczych
Tematy:
congruence of personal and organizational values
questionnaire of value congruence
validity and reliability of the questionnaire
Opis:
Research background: Congruence of employees' personal and organizational values means that the employee both accepts and cherishes organizational values, as well as follows them in daily activities of the organization. Different forms of values in the organization are derived from three subjects (employees, managers, and the organization as a whole). From this perspective, value congruence occurs when employees' personal values match the organizational values, which are supported by the top management of the organization and are acceptable to the majority of members of the organization. Purpose of the article: To carry out verification of methodological and psychometric characteristics of the questionnaire of congruence of personal and organizational values. Methods: The survey of employees was carried out in 15 organizations, of which 11 are private and 4 belong to the public sector (N=374), and on the basis of the results of the research statistical and psychometric analysis of the data was performed. By developing the instrument of congruence of personal and organizational values, an analytical reflection method was applied. To conduct the empirical study, the mixed methods approach was employed, consistently combining qualitative and quantitative research methods, substantiating the research results with different data sources and forms. An expert assessment method was chosen for identification of validity of the constructed instrument and suitability of its content. To identify the perceived congruence of personal and organizational values, employees' personal values, the values prevailing in the organization and the climate of the organization, employees' attitudes towards work and organizational performance results, the employees' questionnaire surveys in fifteen organizations were conducted. The sample was formed employing the stratified sampling methodology. To identify the reliability of methodological and psychometric characteristics of the constructed questionnaire, factor distribution, Cronbach alpha and Spearman Brown coefficients, factor weights, resolutions of test steps were calculated and explained. Multivariate statistical methods: correlation and factor analysis, etc. were also applied. Findings & value added: The reliability and validity of the questionnaire were empirically proved and it is recommended that scholars researching values in organizations and value congruence should use the Questionnaire of Congruence of Personal and Organizational Values for Employees with the authors' consent.
Źródło:
Oeconomia Copernicana; 2018, 9, 3; 545-571
2083-1277
Pojawia się w:
Oeconomia Copernicana
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Minimal formations of universal algebras
Autorzy:
Guo, Wenbin
Shum, K.
Powiązania:
https://bibliotekanauki.pl/articles/728734.pdf
Data publikacji:
2001
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
universal algebra
congruence
formation
minimal subformation
Opis:
A class ℱ of universal algebras is called a formation if the following conditions are satisfied: 1) Any homomorphic image of A ∈ ℱ is in ℱ; 2) If α₁, α₂ are congruences on A and $A/α_{i} ∈ ℱ$, i = 1,2, then A/(α₁∩α₂) ∈ ℱ. We prove that any formation generated by a simple algebra with permutable congruences is minimal, and hence any formation containing a simple algebra, with permutable congruences, contains a minimum subformation. This result gives a partial answer to an open problem of Shemetkov and Skiba on formations of finite universal algebras proposed in 1989.
Źródło:
Discussiones Mathematicae - General Algebra and Applications; 2001, 21, 2; 201-205
1509-9415
Pojawia się w:
Discussiones Mathematicae - General Algebra and Applications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prime counting function π
Funkcja zliczająca liczby pierwsze
Autorzy:
Górowski, Jan
Łomnicki, Adam
Powiązania:
https://bibliotekanauki.pl/articles/1789392.pdf
Data publikacji:
2017-07-05
Wydawca:
Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie
Tematy:
prime number
prime counting function
congruence
Opis:
The aim of this paper is to derive new explicit formulas for thefunction π, where π(x) denotes the number of primes not exceeding x. Some justifications and generalisations of the formulas obtained by Willans (1964),Minac (1991) and Kaddoura and Abdul-Nabi (2012) are also obtained.
Źródło:
Annales Universitatis Paedagogicae Cracoviensis. Studia ad Didacticam Mathematicae Pertinentia; 2013, 5; 71-76
2080-9751
2450-341X
Pojawia się w:
Annales Universitatis Paedagogicae Cracoviensis. Studia ad Didacticam Mathematicae Pertinentia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Erratum to: Congruences and Ideals in a Distributive Lattice with Respect to a Derivation
Autorzy:
Barzegar, Hasan
Powiązania:
https://bibliotekanauki.pl/articles/749868.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
derivation
kernel
congruence
ideal
kernel element
Opis:
The present note is an Erratum for the two theorems of the paper "Congruences and ideals in a distributive lattice with respect to a derivation" by M. Sambasiva Rao.
Źródło:
Bulletin of the Section of Logic; 2019, 48, 1
0138-0680
2449-836X
Pojawia się w:
Bulletin of the Section of Logic
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 52

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