A Representation Theorem for Geometric Morphisms Christopher F. Townsend OriginalPaper 03 March 2009 Pages: 573 - 583
TTF Triples in Functor Categories Lidia Angeleri HügelSilvana Bazzoni OriginalPaper 12 March 2009 Pages: 585 - 613
Graded and Koszul Categories Roberto Martínez-VillaØyvind Solberg OriginalPaper 11 March 2009 Pages: 615 - 652
On Proper and Exterior Sequentiality Luis EspañolJose Manuel García-CalcinesM. Carmen Mínguez OriginalPaper 15 May 2009 Pages: 653 - 668