PSSL 68 - Program Saturday, August 29 9.00 - 9.30 P. T. Johnstone, How bad a category of sketches can be? 9.40 - 10.10 J. Adamek, Continuous lattices and continuous categories revisited 10.30 - 11.00 M.-C. Pedicchio, A characterization theorem for theories of varieties 11.10 - 11.40 H.-E. Porst, TBA 11.50 - 12.10 J. Juerjens, On a problem by Gabriel and Ulmer 14.00 - 14.30 A. K. Simpson, Elementary axioms for categories of classes 14.40 - 15.10 P. Resende, Quantale modules and observational logic 15.20 - 15.50 R. Rother, Strengthening of homogeneity in categorical algebra 16.10 - 16.40 L. Polak, On equational logic (for semigroups) 16.50 - 17.20 M. Sekanina, Shape in computing 17.30 - 18.00 O. Kamenik, TBA Sunday, August 30 9.00 - 9.30 R. Wood, TBA 9.40 - 10.10 E. Vitale, TBA 10.30 - 11.00 J. Velebil, 1-step cocompletions 11.10 - 11.30 J. M. Egger, TBA 11.40 - 12.10 M. Jibladze, Scattered toposes 12.20 - 12.50 J. Rosicky, How algebraic is algebra?