Abstract
A natural structure modelling approximation is presented and the resulting category is shown to be equivalent with the category of complete nearness frames.
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Banaschewski, B., Pultr, A. A General View of Approximation. Appl Categor Struct 14, 165–190 (2006). https://doi.org/10.1007/s10485-006-9013-z
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DOI: https://doi.org/10.1007/s10485-006-9013-z