Tholen, Walter A mathematical tribute to Reinhard Börger. (English) Zbl 1365.18002 Cah. Topol. Géom. Différ. Catég. 57, No. 4, 295-314 (2016). Summary: A synopsis of the life and work of Reinhard Börger (1954–2014) is presented, with an emphasis on his early or unpublished works. MSC: 18-03 History of category theory 01A70 Biographies, obituaries, personalia, bibliographies 18A30 Limits and colimits (products, sums, directed limits, pushouts, fiber products, equalizers, kernels, ends and coends, etc.) 18A20 Epimorphisms, monomorphisms, special classes of morphisms, null morphisms 18A40 Adjoint functors (universal constructions, reflective subcategories, Kan extensions, etc.) 18B30 Categories of topological spaces and continuous mappings (MSC2010) 18D20 Enriched categories (over closed or monoidal categories) 16S10 Associative rings determined by universal properties (free algebras, coproducts, adjunction of inverses, etc.) 28E99 Miscellaneous topics in measure theory 11A99 Elementary number theory Keywords:cogenerator; strong generator; semi-topological functor; total category; extensive category; sequentially convex space Biographic References: Börger, Reinhard PDFBibTeX XMLCite \textit{W. Tholen}, Cah. Topol. Géom. Différ. Catég. 57, No. 4, 295--314 (2016; Zbl 1365.18002)