Quasi-Frobenius-Erweiterungen.
Bruno Müller (1964)
Mathematische Zeitschrift
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Bruno Müller (1964)
Mathematische Zeitschrift
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R.P. Burn (1968)
Mathematische Zeitschrift
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Laurent Bonavero, Andreas Höring (2007)
Annali della Scuola Normale Superiore di Pisa - Classe di Scienze
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In this paper we study the structure of manifolds that contain a quasi-line and give some evidence towards the fact that the irreducible components of degenerations of the quasi-line should determine the Mori cone. We show that the minimality with respect to a quasi-line yields strong restrictions on fibre space structures of the manifold.
C.J. Neugebauer (1962)
Mathematische Zeitschrift
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M. Kapovich, B. Leeb (1995)
Geometric and functional analysis
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Cabiria Andreian Cazacu (1981)
Annales Polonici Mathematici
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Krzysztof Jan Nowak (2010)
Annales Polonici Mathematici
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M.S. Ramanujan (1956)
Mathematische Zeitschrift
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Robert H. Lohman (1974)
Colloquium Mathematicae
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Kyungho Oh (1995)
Mathematische Zeitschrift
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T. K. Pal, M. Maiti (1977)
Matematički Vesnik
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D. J. Grubb (2008)
Fundamenta Mathematicae
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A quasi-linear map from a continuous function space C(X) is one which is linear on each singly generated subalgebra. We show that the collection of quasi-linear functionals has a Banach space pre-dual with a natural order. We then investigate quasi-linear maps between two continuous function spaces, classifying them in terms of generalized image transformations.
Roman Sikorski (1974)
Fundamenta Mathematicae
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Olivier Olela Otafudu, Zechariah Mushaandja (2017)
Topological Algebra and its Applications
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We show that the image of a q-hyperconvex quasi-metric space under a retraction is q-hyperconvex. Furthermore, we establish that quasi-tightness and quasi-essentiality of an extension of a T0-quasi-metric space are equivalent.