Categorical Perspectives

Preface / J. Koslowski and A. Melton Categories: A Free Tour / L. Schröder The Functor that Wouldn't Be / Y.T. Rhineghost The Emergence of Functors / Y.T. Rhineghost Too Many Functors / A. Zmrzlina Contributions and Importance of Professor George Strecker's Research / J. Koslowski 10 Rules for Surviving as a Mathematician and Teacher / G.E. Strecker Connections and Polarities / A. Melton Categorical Closure Operators / G. Castellini Extensions of Maps from Dense Subspaces / H.L. Bentley Characterizations of Subspaces of Important Types of Convergence Spaces in the Realm of Convenient Topology / G. Preuß The Naturals Are Lindelöf iff Ascoli Holds / Y.T. Rhineghost Revisiting the Celebrated Thesis of J. de Groot: 'Everything is Linear' / L. Janos Finite Ultrametric Spaces and Computer Science / V.A. Lemin The Copnumber of a Graph Is Bounded by [3/2 genus(G)] + 3 / B.S.W. Schroeder Abelian Groups: Simultaneously Reflective and Coreflective Subcategories Versus Modules / R. El Bashir, H. Herrlich, and M. Husek