Abstract
Categories may be viewed as deductive systems or as algebraic theories. We are primarily interested in the interplay between these two views and trace it through a number of structured categories and their internal languages, bearing in mind their relevance to the foundations of mathematics. We see this as a common thread running through the six contributions to this issue of Studia Logica.
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Lambek, J. On some connections between logic and category theory. Stud Logica 48, 269–278 (1989). https://doi.org/10.1007/BF00370824
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DOI: https://doi.org/10.1007/BF00370824