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Overtness is the lattice dual of compactness in various forms of constructive topology and analysis, where related ideas are also called "located" (constructive analysis), "recursively enumerable" (computable analysis), "open" (locale theory) or "positive" (formal topology).

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Intermediate value theorem on computable reals

This question and its answers confused me for a while, but I think I get it now, so I'll describe my experience in the hopes that it will help other non-experts, and the experts can tell me if I've st …
Reid Barton's user avatar
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