Date of Original Version

11-13-2002

Type

Technical Report

Rights Management

All Rights Reserved

Abstract or Description

Moerdijk has introduced a topos of sheaves on a category of filters. Following his suggestion, we prove that its double negation subtopos is the topos of sheaves on the subcategory of ultrafilters - the ultrasheaves. We then use this result to establish a double negation translation of results between the topos of ultrasheaves and the topos on filters.

Comments

CMU-PHIL-136

Included in

Philosophy Commons

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