Abstract
For each concrete category (K,U) an extension LIM(K,U) is constructed and under certain 'smallness conditions' it is proved that LIM(K,U) is a solid hull of (K,U), i.e., the least finally dense solid extension of (K,U). A full subcategory of Top 2 is presented which does not have a solid hull.
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Adámek, J., Sousa, L. Constructions of Solid Hulls. Applied Categorical Structures 9, 1–13 (2001). https://doi.org/10.1023/A:1008712718249
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DOI: https://doi.org/10.1023/A:1008712718249