On pairwise semi and pairwise semi bitopological spaces
M. Jelić (1982)
Matematički Vesnik
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M. Jelić (1982)
Matematički Vesnik
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D. Andrijević (1984)
Matematički Vesnik
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Deepa Sinha, Pravin Garg (2011)
Discussiones Mathematicae Graph Theory
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A signed graph (or sigraph in short) is an ordered pair , where is a graph G = (V,E), called the underlying graph of S and σ:E → +, - is a function from the edge set E of into the set +,-, called the signature of S. The ×-line sigraph of S denoted by is a sigraph defined on the line graph of the graph by assigning to each edge ef of , the product of signs of the adjacent edges e and f in S. In this paper, first we define semi-total line sigraph and semi-total point sigraph...
Emile Le Page, Marc Peigne (1994)
Publications mathématiques et informatique de Rennes
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K. K. Dube, R. K. Sengar (1980)
Matematički Vesnik
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Chaosheng Zhu (2015)
Annales Polonici Mathematici
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This paper is concerned with the study of the large time behavior and especially the regularity of the global attractor for the semi-discrete in time Crank-Nicolson scheme to discretize the Benjamin-Bona-Mahony equation on ℝ¹. Firstly, we prove that this semi-discrete equation provides a discrete infinite-dimensional dynamical system in H¹(ℝ¹). Then we prove that this system possesses a global attractor in H¹(ℝ¹). In addition, we show that the global attractor is regular, i.e., ...
Frans Loonstra (1985)
Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni
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Si considerano le estensioni chiuse di un -modulo mediante un -modulo nel caso in cui sia un anello semi-artiniano, cioè un anello con la proprietà che per ogni quoziente sia soc . Tali estensioni sono caratterizzate dal fatto che deve essere un sottomodulo semi-puro di .
Simon Lücking (2014)
Studia Mathematica
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Let G be an infinite, compact abelian group and let Λ be a subset of its dual group Γ. We study the question which spaces of the form or and which quotients of the form or have the Daugavet property. We show that is a rich subspace of C(G) if and only if is a semi-Riesz set. If is a rich subspace of L¹(G), then is a rich subspace of C(G) as well. Concerning quotients, we prove that has the Daugavet property if Λ is a Rosenthal set, and that is a poor subspace of L¹(G)...
Frans Loonstra (1985)
Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti
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Si considerano le estensioni chiuse di un -modulo mediante un -modulo nel caso in cui sia un anello semi-artiniano, cioè un anello con la proprietà che per ogni quoziente sia soc . Tali estensioni sono caratterizzate dal fatto che deve essere un sottomodulo semi-puro di .
J. Sanabria, C. Carpintero, E. Rosas, O. García (2012)
Studia Mathematica
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An operator T acting on a Banach space X has property (gw) if , where is the approximate point spectrum of T, is the upper semi-B-Weyl spectrum of T and E(T) is the set of all isolated eigenvalues of T. We introduce and study two new spectral properties (v) and (gv) in connection with Weyl type theorems. Among other results, we show that T satisfies (gv) if and only if T satisfies (gw) and .
Shahed Sharif (2013)
Journal de Théorie des Nombres de Bordeaux
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Let be a local field of residue characteristic . Let be a curve over whose minimal proper regular model has totally degenerate semi-stable reduction. Under certain hypotheses, we compute the prime-to- rational torsion subgroup on the Jacobian of . We also determine divisibility of line bundles on , including rationality of theta characteristics and higher spin structures. These computations utilize arithmetic on the special fiber of .
A. Błaszczyk (1974)
Colloquium Mathematicae
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Takashi Noiri (1983)
Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni
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Si studiano le condizioni sotto cui l’immagine (o l'immagine inversa) di uno spazio localmente -chiuso sia localmente -chiuso.
E. Shargorodsky
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Let M be a -smooth n-dimensional manifold and ν₁, ..., νₙ be -smooth vector fields on M which span the tangent space at each point x ∈ M. The vector fields ν₁, ..., νₙ may have nonzero commutators. We construct a calculus of pseudodifferential operators (ψDOs) which act on sections of vector bundles over M and have symbols belonging to anisotropic analogues of the Hörmander classes , and apply it to semi-elliptic operators generated by ν₁,...,νₙ. The results obtained include the...
Takashi Noiri (1973)
Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti
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Se ed sono spazi topologici, un'applicazione dicesi semicontinua [3] se, per ogni insieme aperto di , risulta un insieme semiaperto di . Qui si studiano tali applicazioni e si dànno tre loro caratterizzazioni.
Mohammed Berkani, Mustapha Sarih, Hassan Zariouh (2016)
Mathematica Bohemica
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We study the stability of a-Browder-type theorems for orthogonal direct sums of operators. We give counterexamples which show that in general the properties , , and are not preserved under direct sums of operators. However, we prove that if and are bounded linear operators acting on Banach spaces and having the property , then has the property if and only if , where is the upper semi-B-Weyl spectrum of . We obtain analogous preservation results for the properties ,...
D. W. Hajek, I. Irizarry (1981)
Matematički Vesnik
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Krzysztof Kołodziejczyk (1987)
Colloquium Mathematicae
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M. K. Aouf (1988)
Matematički Vesnik
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A. Makowski (1964)
Matematički Vesnik
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P. Srivastava, K. K. Azad (1981)
Matematički Vesnik
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