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    Wyświetlanie 1-9 z 9
    Tytuł:
    Wold-type extension for N-tuples of commuting contractions
    Autorzy:
    Kosiek, Marek
    Octavio, Alfredo
    Powiązania:
    https://bibliotekanauki.pl/articles/1216255.pdf
    Data publikacji:
    1999
    Wydawca:
    Polska Akademia Nauk. Instytut Matematyczny PAN
    Tematy:
    contractions
    dilations
    extensions
    Opis:
    Let (T_1,…,T_N) be an N-tuple of commuting contractions on a separable, complex, infinite-dimensional Hilbert space ℋ. We obtain the existence of a commuting N-tuple (V_1,…,V_N) of contractions on a superspace K of ℋ such that each $V_j$ extends $T_j$, j=1,…,N, and the N-tuple (V_1,…,V_N) has a decomposition similar to the Wold-von Neumann decomposition for coisometries (although the $V_j$ need not be coisometries). As an application, we obtain a new proof of a result of Słociński (see [9])
    Źródło:
    Studia Mathematica; 1999, 137, 1; 81-91
    0039-3223
    Pojawia się w:
    Studia Mathematica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    ON SOME SELECTED PROBLEMS OF KOREAN ABBREVIOLOGY
    한국어 축약형에 관한 고찰
    Wybrane zagadnienia z zakresu abrewiologii języka koreańskiego
    Autorzy:
    BOROWIAK, Anna
    Powiązania:
    https://bibliotekanauki.pl/articles/1040349.pdf
    Data publikacji:
    2016-11-04
    Wydawca:
    Uniwersytet im. Adama Mickiewicza w Poznaniu
    Tematy:
    Korean
    abbreviated forms
    grammatical abbreviation
    clippings
    contractions
    Opis:
    Given the fact that we live in the era where the pace of life is constantly speeding up, it is no surprise that ‘the economy of language’ - meaning the efficient usage of language in order to achieve the maximum effect for the minimum effort has become so important in everyday life. Using abbreviated forms of different kinds is supposed to help us to economize continuously insufficient amount of time. Their overuse, however, can hamper effective communication and bring the adverse effect from what the speaker’s intention was – namely to communicate the message clearly and unambiguously and receive a response to it in a short time. Incomprehension or misunderstanding of the message leads, in fact, to unnecessarily prolonging the conversation since it requires asking additional questions in order to explain what is unclear to the listener. Reduced forms used mainly in spoken Korean can largely be divided into lexical and grammatical ones. Lexical shortenings of different kinds such as acronyms, blends, clippings etc. although rarely and rather briefly discussed by Korean linguists and basically excluded from the debate on word-formation issues definitely deserve much more attention taking into account their extensive usage. As for grammatical abbreviations, despite its frequent occurrence, the subject is not that often taken up and discussed either. The aim of this article is to present some characteristic properties of grammatical abbreviations used mainly in spoken Korean. The reduced forms in question will be divided into three categories namely - particles, endings and grammatical constructions and discussed separately. This article however focuses only on those abbreviated forms, which means leaving the subject of particle or word ellipsis beyond its scope.
    우리는 생활의 속도가 지속적으로 가속화되어 가고 있는 시대에서 살고 있다. 이러한 사실을 감안해 볼 때 최소의 노력으로 최대의 효과를 얻을 수 있다는 목적을 달성하기 위한 ‘언어의 경제성’이 일상생활에서 그만큼 중요해졌다는 것은 놀랄 만한 일이 아니다. 다양한 종류의 ‘줄어든 말 (축약)’의 사용은 충분하지 않은 시간을 절약할 수 있도록 우리에게 도움을 준다. 그런데 ‘줄어든 말’의 남용은 원활한 의사소통을 방해할 수 있으며, 결국에는 분명하고 명확하게 정보를 전달하고 짧은 시간 안에 청자의 응답을 받으려는 화자의 의지와는 전혀 다른 반응, 즉 역효과를 가져올 수도 있다. 실제로 화자가 말한 내용을 청자가 이해하지 못하거나, 잘못 이해한 경우에는 불필요한 담화를 지속해야 할 수도 있다. 왜냐하면 명확하지 못한 부분을 설명하기 위한 추가 질문과 대답이 필요하기 때문이다. 대체로 구어체 한국어에서 사용되는 축약형은 크게 어휘 단위가 축약된 ‘준말’과 문법적인 단위의 음운 탈락이나 축약인 ‘줄어든 말’로 나눌 수 있다. 두문자어 (acronyms), 혼성어 (blends), 단축어 (clipping) 등과 같은 축소된 어휘 단위가 한국 언어학자들에 의하여 간략하게 언급되며 기본적으로 어휘형성법에 관한 논의에서 제외되어 있으나, 일상생활에서 그러한 어휘의 광범위한 사용을 고려한다면 훨씬 더 많은 연구의 대상이 되어야 한다. 그리고 문법 단위가 축약된 형태 또한 빈번하게 사용됨에도 불구하고 연구의 대상이 되는 경우는 흔하지 않다. 본 연구는 주로 구어체 한국어에서 사용되는 축약된 문법 단위를 관찰하여 그 특질을 드러내는 데에 목적이 있다. 본 연구는 조사와 어미, 문법적 구조의 세 가지 범주를 대상으로 하위 구분하여 논의할 것이다. 그러나 이 연구는 축약된 문법 단위만을 논의 주제로 삼되 조사나 어휘의 탈락은 논외로 한다.
    Źródło:
    International Journal of Korean Humanities and Social Sciences; 2015, 1; 137-164
    2449-7444
    Pojawia się w:
    International Journal of Korean Humanities and Social Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Semigroup of Contractions of Wreath Products of Metric Spaces
    Autorzy:
    Oliynyk, Bogdana
    Powiązania:
    https://bibliotekanauki.pl/articles/729049.pdf
    Data publikacji:
    2010
    Wydawca:
    Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
    Tematy:
    metric space
    wreath product
    semigroup of contractions
    Opis:
    In this paper semigroups of contractions of metric spaces are considered. The semigroup of contractions of the wreath product of metric spaces is calculated.
    Źródło:
    Discussiones Mathematicae - General Algebra and Applications; 2010, 30, 1; 35-43
    1509-9415
    Pojawia się w:
    Discussiones Mathematicae - General Algebra and Applications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    CORPORATE DEBT AND CRISIS SEVERITY IN EUROPE
    Autorzy:
    Niemczak, Kinga
    Powiązania:
    https://bibliotekanauki.pl/articles/599452.pdf
    Data publikacji:
    2013
    Wydawca:
    Wyższa Szkoła Informatyki i Zarządzania z siedzibą w Rzeszowie
    Tematy:
    corporate debt
    crisis
    European Union
    financial structure
    growth contractions
    Opis:
    The aim of this paper is to analyse the financial structure of non-financial corporations in the European Union prior to the 2008 crisis and to determine whether the ex-ante differences in corporate financial structure had an impact on the severity of the 2008 financial crisis in European countries. The analysis confirms a negative relationship between the corporate debt ratio prior to the crisis and crisis-induced contractions in corporate investment and GDP. The results indicate a greater importance of the growth in corporate indebtedness in the years prior to the crisis for crisis vulnerability than solely the level of debt immediately before the crisis. The paper has several important implications for crisis prevention and mitigation policy.
    Źródło:
    Finansowy Kwartalnik Internetowy e-Finanse; 2013, 9, 1; 35-43
    1734-039X
    Pojawia się w:
    Finansowy Kwartalnik Internetowy e-Finanse
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Properties of two variables Toeplitz type operators
    Autorzy:
    Król-Klimkowska, Elżbieta
    Ptak, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/744673.pdf
    Data publikacji:
    2016-12-01
    Wydawca:
    Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie
    Tematy:
    Pair of contractions
    isometric dilation
    doubly commuting
    Toeplitz operator
    symbol operator
    Opis:
    The investigation of properties of generalized Toeplitz operators with respect to the pairs of doubly commuting contractions (the abstract analogue of classical two variable Toeplitz operators) is proceeded. We especially concentrate on the condition of existence such a non-zero operator. There are also presented conditions of analyticity of such an operator.
    Źródło:
    Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica; 2016, 15
    2300-133X
    Pojawia się w:
    Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Degenerate evolution problems and Beta-type operators
    Autorzy:
    Attalienti, Antonio
    Campiti, Michele
    Powiązania:
    https://bibliotekanauki.pl/articles/1206074.pdf
    Data publikacji:
    2000
    Wydawca:
    Polska Akademia Nauk. Instytut Matematyczny PAN
    Tematy:
    approximation process
    $C_0$-semigroups of contractions
    Beta-type operators
    differential operators
    Opis:
    The present paper is concerned with the study of the differential operator Au(x):=α(x)u''(x)+β(x)u'(x) in the space C([0,1)] and of its adjoint Bv(x):=((αv)'(x)-β(x)v(x))' in the space $L^1(0,1)$, where α(x):=x(1-x)/2 (0≤x≤1). A careful analysis of their main properties is carried out in view of some generation results available in [6, 12, 20] and [25]. In addition, we introduce and study two different kinds of Beta-type operators as a generalization of similar operators defined in [18]. Among the corresponding approximation results, we show how they can be used in order to represent explicitly the solutions of the Cauchy problems associated with the operators A and Ã, where à is equal to B up to a suitable bounded additive perturbation.
    Źródło:
    Studia Mathematica; 2000, 140, 2; 117-139
    0039-3223
    Pojawia się w:
    Studia Mathematica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On a vector-valued local ergodic theorem in $L_∞$
    Autorzy:
    Sato, Ryotaro
    Powiązania:
    https://bibliotekanauki.pl/articles/1217311.pdf
    Data publikacji:
    1999
    Wydawca:
    Polska Akademia Nauk. Instytut Matematyczny PAN
    Tematy:
    vector-valued local ergodic theorem
    reflexive Banach space
    d-dimensional semigroup of linear contractions
    contraction majorant
    Opis:
    Let $T = {T(u): u ∈ ℝ_d^{+}}$ be a strongly continuous d-dimensional semigroup of linear contractions on $L_1((Ω,Σ,μ);X)$, where (Ω,Σ,μ) is a σ-finite measure space and X is a reflexive Banach space. Since $L_1((Ω,Σ,μ);X)* = L_∞((Ω,Σ,μ);X*)$, the adjoint semigroup $T* = {T*(u): u ∈ ℝ_d^{+}}$ becomes a weak*-continuous semigroup of linear contractions acting on $L_∞((Ω,Σ,μ);X*)$. In this paper the local ergodic theorem is studied for the adjoint semigroup T*. Assuming that each T(u), $u ∈ ℝ_d^{+}$, has a contraction majorant P(u) defined on $L_1((Ω,Σ,μ);ℝ)$, that is, P(u) is a positive linear contraction on $L_1((Ω,Σ,μ);ℝ)$ such that $‖T(u)f(ω)‖ ≤ P(u)‖f(·)‖(ω)$ almost everywhere on Ω for every $⨍ ∈ L_1((Ω,Σ,μ);X)$, we prove that the local ergodic theorem holds for T*.
    Źródło:
    Studia Mathematica; 1999, 132, 3; 285-298
    0039-3223
    Pojawia się w:
    Studia Mathematica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pointwise ergodic theorems for functions in Lorentz spaces $L_{pq}$ with p ≠ ∞
    Autorzy:
    Sato, Ryotaro
    Powiązania:
    https://bibliotekanauki.pl/articles/1290543.pdf
    Data publikacji:
    1994
    Wydawca:
    Polska Akademia Nauk. Instytut Matematyczny PAN
    Tematy:
    pointwise ergodic theorems
    $L_{pq}$ spaces
    null preserving transformations
    measure preserving transformations
    positive contractions on $L_1$ spaces
    Opis:
    Let τ be a null preserving point transformation on a finite measure space. Assuming τ is invertible, P. Ortega Salvador has recently obtained sufficient conditions for the almost everywhere convergence of the ergodic averages in $L_{pq}$ with 1 < p < ∞, 1 < q < ∞. In this paper we obtain necessary and sufficient conditions for the almost everywhere convergence, without assuming that τ is invertible and only assuming that p ≠ ∞.
    Źródło:
    Studia Mathematica; 1994, 109, 2; 209-216
    0039-3223
    Pojawia się w:
    Studia Mathematica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On the Existence of Common Fixed Points for Semigroups of Nonlinear Mappings in Modular Function Spaces
    Autorzy:
    Kozlowski, Wojciech M.
    Powiązania:
    https://bibliotekanauki.pl/articles/745208.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Matematyczne
    Tematy:
    Fixed point
    common fixed point
    nonexpansive mapping
    contractions
    semigroup of mappings
    modular function space
    modular space
    Orlicz space
    Musielak-Orlicz space
    Opis:
    Let \(C\) be a \(\rho\)-bounded, \(\rho\)-closed, convex subset of a modular function space \(L_\rho\). We investigate the existence of common fixed points for semigroups of nonlinear mappings \(T_t\colon C\to C\), i.e. a family such that \(T_0(x) = x\), \(T_{s+t} = T_s (T_t (x))\), where each \(T_t\) is either \(\rho\)-contraction or \(\rho\)-nonexpansive. We also briefly discuss existence of such semigroups and touch upon applications to differential equations.
    Źródło:
    Commentationes Mathematicae; 2011, 51, 1
    0373-8299
    Pojawia się w:
    Commentationes Mathematicae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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