منابع مشابه
Strolling through Paradise
With each of the classical tree–like forcings adjoining a new real, one can associate a σ– ideal on the reals in a natural way. For example, the ideal of Marczewski null sets s corresponds to Sacks forcing S, while the ideal of nowhere Ramsey sets r corresponds to Mathias forcing R. We show (in ZFC) that none of these ideals is included in any of the others. We also discuss Mycielski’s ideal P2...
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With each of the classical tree-like forcings adjoining a new real, one can associate a σ-ideal on the reals in a natural way. For example, the ideal s0 of Marczewski null sets corresponds to Sacks forcing S, while the ideal r0 of nowhere Ramsey sets corresponds to Mathias forcing R. We show (in ZFC) that none of these ideals is included in any of the others. We also discuss Mycielski’s ideal P...
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This paper describes the design and implementation of Paradise, a database system designed for handling GIS type of applications. The current version of Paradise, uses a client{server architecture and provides an extended{relational data model for modeling GIS applications. Paradise supports an extended version of SQL and provides a graphical user interface for querying and browsing the databas...
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1Center for Infection and Immunity of Lille (CIIL), INSERM U1019 – CNRS UMR 8204, Institut Pasteur de Lille, Université Lille Nord de France, Lille, France, 2Faculty of Veterinary Medicine, University of Zaragoza, Zaragoza, Spain, 3Biology Centre, Institute of Parasitology, The Czech Academy of Sciences, České Budějovice, Czech Republic, 4Department of Virology, Veterinary Research Institute, B...
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Head-Directed Navigation is a new and simple, yet efficient paradigm for navigating large virtual spaces. For walkthrough applications such as architectural visualization or games, the user is often required to cover simulated distances. In doing so, unexperienced users often have a hard time learning complicated navigation patters with 3-D mice or similar input devices. In large virtual worlds...
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ژورنال
عنوان ژورنال: Fundamenta Mathematicae
سال: 1995
ISSN: 0016-2736,1730-6329
DOI: 10.4064/fm-148-1-1-25