Dual attachment pairs in categorically-algebraic topology Anna Frascella | Cosimo Guido | Sergey A. Solovyov | Show more Anna Frascella Italy University of Salento Department of Mathematics "E. De Giorgi", University of Salento, P. O. Box 193, 73100 Lecce, Italy Cosimo Guido Italy University of Salento Department of Mathematics "E. De Giorgi", University of Salento, P. O. Box 193, 73100 Lecce, Italy. Sergey A. Solovyov Latvia University of Latvia Department of Mathematics, University of Latvia, Zellu iela 8, LV-1002 Riga, Latvia.Institute of Mathematics and Computer Science, University of Latvia, Raina bulvaris 29, LV-1459 Riga, Latvia.sergejs.solovjovs@lumii.lv Submitted: 2013-07-31 | Accepted: 2013-07-31 | DOI: https://doi.org/10.4995/agt.2011.1646