Weakly hyperbolic equations with time degeneracy in Sobolev spaces.
Reissig, Michael (1997)
Abstract and Applied Analysis
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Reissig, Michael (1997)
Abstract and Applied Analysis
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Michael Dreher (2003)
Banach Center Publications
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Michał Kisielewicz (1975)
Annales Polonici Mathematici
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Daniela Calvo (2006)
Bollettino dell'Unione Matematica Italiana
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We prove the well-posedness of the Cauchy Problem for first order weakly hyperbolic systems in the multi-anisotropic Gevrey classes, that generalize the standard Gevrey spaces. The result is obtained under the following hypotheses: the principal part is weakly hyperbolic with constant coefficients, the lower order terms satisfy some Levi-type conditions; and lastly the coefficients of the lower order terms belong to a suitable anisotropic Gevrey class. In the proof it is used the quasi-symmetrization...
Avalishvili, G., Gordeziani, D. (1999)
Bulletin of TICMI
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J. Kisyński (1970)
Colloquium Mathematicae
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Sudhanshu K. Ghoshal, Abha Ghoshal, M. Abu-Masood (1977)
Annales Polonici Mathematici
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Jan Dymara, Damian Osajda (2007)
Fundamenta Mathematicae
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We prove that the boundary of a right-angled hyperbolic building is a universal Menger space. As a consequence, the 3-dimensional universal Menger space is the boundary of some Gromov-hyperbolic group.
R. Krasnodębski (1970)
Colloquium Mathematicae
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Romanov, V. G. (2003)
Sibirskij Matematicheskij Zhurnal
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Carvalho e Silva, Jaime (1988)
Portugaliae mathematica
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Do Duc Thai, Pham Nguyen Thu Trang (2004)
Annales Polonici Mathematici
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A necessary and sufficient condition for tautness of locally taut domains in a weakly Brody hyperbolic complex space is given. Moreover, some results of Kobayashi and Gaussier are deduced as corollaries.
Douglas Dunham (1999)
Visual Mathematics
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Demirel, Oğuzhan, Soytürk, Emine (2008)
Novi Sad Journal of Mathematics
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W. Mlak (1962)
Annales Polonici Mathematici
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Alexey Stakhov (2013)
Visual Mathematics
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Joan Porti (2013)
Annales de l’institut Fourier
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We prove that a closed 3-orbifold that fibers over a hyperbolic polygonal 2-orbifold admits a family of hyperbolic cone structures that are viewed as regenerations of the polygon, provided that the perimeter is minimal.
Freedman, Michael H., McMullen, Curtis T. (1998)
Annales Academiae Scientiarum Fennicae. Mathematica
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