Ultrasheaves and Double Negation
نویسندگان
چکیده
منابع مشابه
Ultrasheaves and Double Negation
Moerdijk has introduced a topos of sheaves on a category of lters. Following his suggestion, we prove that its double negation subtopos is the topos of sheaves on the subcategory of ultra lters the ultrasheaves. We then use this result to establish a double negation translation of results between the topos of ultrasheaves and the topos on lters. 2000 Mathematics Subject Classi cation. Primary 0...
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ژورنال
عنوان ژورنال: Notre Dame Journal of Formal Logic
سال: 2004
ISSN: 0029-4527
DOI: 10.1305/ndjfl/1099238447