Some properties of -frames of subspaces.
Faroughi, M.H., Ahmadi, R., Afsar, Z. (2008)
The Journal of Nonlinear Sciences and its Applications
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Faroughi, M.H., Ahmadi, R., Afsar, Z. (2008)
The Journal of Nonlinear Sciences and its Applications
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S. Pilipović, Diana Stoeva, N. Teofanov (2007)
Bulletin, Classe des Sciences Mathématiques et Naturelles, Sciences mathématiques
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S.K. Kaushik, Shalu Sharma (2014)
Archivum Mathematicum
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Schauder frames were introduced by Han and Larson [9] and further studied by Casazza, Dilworth, Odell, Schlumprecht and Zsak [2]. In this paper, we have introduced approximative Schauder frames as a generalization of Schauder frames and a characterization for approximative Schauder frames in Banach spaces in terms of sequence of non-zero endomorphism of finite rank has been given. Further, weak* and weak approximative Schauder frames in Banach spaces have been defined. Finally, it has...
Yong Min Li, Wang Guo-jun (1997)
Commentationes Mathematicae Universitatis Carolinae
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In this paper, localic upper, respectively lower continuous chains over a locale are defined. A localic Katětov-Tong insertion theorem is given and proved in terms of a localic upper and lower continuous chain. Finally, the localic Urysohn lemma and the localic Tietze extension theorem are shown as applications of the localic insertion theorem.
Almira, J.M. (2010)
Annals of Functional Analysis (AFA) [electronic only]
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Joanne L. Walters-Wayland (1991)
Commentationes Mathematicae Universitatis Carolinae
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A bijective correspondence between strong inclusions and compactifications in the setting of -frames is presented. The category of uniform -frames is defined and a description of the Samuel compactification is given. It is shown that the Samuel compactification of a uniform frame is completely determined by the -frame consisting of its uniform cozero part, and consequently, any compactification of any frame is so determined.