Jan-Erik Roos (16 October 1935 - 15 December 2017) was a Swedish mathematician whose research interests were in abeliancategory theory, homological algebra and related areas.
Jan-Erik Roos, Introduction à l’étude de la distributivité des foncteurs lim par rapport aux lim dans les catégories des faisceaux (topos), Comptes Rendus Hebdomadaires des Séances de l’Académie des Sciences 259 (1964), 969–972 (PDF)
See also:
Jan-Erik Roos, Locally Noetherian categories and generalized strictly linearly compact rings. Applications, In: Category Theory, Homology Theory and their Applications II. Lecture Notes in Mathematics 92, Springer 1969 doi