A formula for angles between subspaces of inner product spaces.
Gunawan, Hendra, Neswan, Oki, Setya-Budhi, Wono (2005)
Beiträge zur Algebra und Geometrie
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Gunawan, Hendra, Neswan, Oki, Setya-Budhi, Wono (2005)
Beiträge zur Algebra und Geometrie
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Egbert Thümmel (1994)
Commentationes Mathematicae Universitatis Carolinae
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We give an example of an extremally disconnected compact Hausdorff space with an open continuous selfmap such that the fixed point set is nonvoid and nowhere dense, respṫhat there is exactly one nonisolated fixed point.
Sójka, Grzegorz (2003)
Beiträge zur Algebra und Geometrie
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Gilles Godefroy, V. Indumathi (2001)
Revista Matemática Complutense
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In any dual space X*, the set QP of quasi-polyhedral points is contained in the set SSD of points of strong subdifferentiability of the norm which is itself contained in the set NA of norm attaining functionals. We show that NA and SSD coincide if and only if every proximinal hyperplane of X is strongly proximinal, and that if QP and NA coincide then every finite codimensional proximinal subspace of X is strongly proximinal. Natural examples and applications are provided.
Carlos Borges (1991)
Colloquium Mathematicae
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Boonpok, Chawalit (2010)
Acta Universitatis Apulensis. Mathematics - Informatics
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Turkoglu, Duran, Altun, Ishak, Fisher, Brian (2006)
Novi Sad Journal of Mathematics
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Boonpok, Chawalit (2009)
Acta Universitatis Apulensis. Mathematics - Informatics
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Ryazanov, V.I., Sevost'yanov, E.A. (2006)
Sibirskie Ehlektronnye Matematicheskie Izvestiya [electronic only]
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Riesinger, Rolf (2005)
Beiträge zur Algebra und Geometrie
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