Basic subtoposes of the effective topos
نویسندگان
چکیده
منابع مشابه
Basic subtoposes of the effective topos
We study the lattice of local operators in Hyland’s Effective Topos. We show that this lattice is a free completion under internal sups indexed by the natural numbers object, generated by what we call basic local operators. We produce many new local operators and we employ a new concept, sight, in order to analyze these. We show that a local operator identified by A.M. Pitts in his thesis, give...
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ژورنال
عنوان ژورنال: Annals of Pure and Applied Logic
سال: 2013
ISSN: 0168-0072
DOI: 10.1016/j.apal.2013.04.001