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Sublocales of regular reasonable d-frames

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If you have a question about this talk, please contact Dan Ghica.

Work in progress. Reasonable d-frames axiomatise bitopological spaces. Their logical reading is as theories of four-valued logic. I will show how regularity naturally generalises from frames to d-frames and how it can be used to characterise certain sub-objects of reasonable d-frames.

This talk is part of the Lab Lunch series.

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