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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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Is the Intermediate Value Theorem strictly stronger than LLPO?
In Lifschitz realizability $\mathbf{LLPO}$ holds but the intermediate value theorem fails.
The fact that $\mathbf{LLPO}$ holds is a standard property of Lifschitz realizability. The analytic version o …