Compactness and the Axiom of Choice -- On Categorical Notions of Compact Objects -- Reflective Relatives of Adjunctions -- The Kat?tov Dimension Proximity Spaces -- Generalized Reflective cum Coreflective Classes in Top and Unif -- On the Largest Coreflective Cartesian Closed Subconstruct of Prtop -- Topological Spaces and Quasi-Varieties -- ?-Sober Spaces via the Orthogonal Closure Operator -- Some Aspects of Topological Descent -- The Pullback Closure Operator and Generalisations of Perfectness -- A Remark on Fixed Points Functors in Topological Categories -- Concrete Categories Are Concretely Equivalent iff Their Uniquely Transportable Modifications Are Strict Concretely Isomorphic -- Connectedness, Disconnectedness and Closure Operators, a More General Approach -- Dold Type Theorems in Cubical Homotopy Theory -- A Topological Banach Space Model of Linear Logic -- Parametrizing the Theory of Closure Operators -- Tychonoff Compactifications and R-Completions of Mappings and Rings of Continuous Functions -- Disconnectedness: Two Examples -- Objects with Dense Diagonals -- Ascoli-Arzelรก-Theory Based on Continuous Convergence in an (Almost) Non-Hausdorff Setting -- A Subcategory of FIL -- Epis in the Category of Pairwise-I2 Spaces -- Clone Segments in Top and in Unif -- Simultaneous Problems of Clone Segments in Top and in Unif -- List of Partipants

1. Mathematics
2. Category theory (Mathematics)
3. Homological algebra
4. Mathematical logic
5. Mathematics
6. Category Theory
7. Homological Algebra
8. Mathematical Logic and Foundations