Presentations, slides, etc.
For a small fraction of the conferences to which I participated, I used slides. In case anybody wants to have a look at these slides, I put them here for download.
download Banska Bystrica 2002 (pdf)
download Kosice 2003 (pdf).
Added notes: Meanwhile, the following problems of that set of slides have been solved. Problem 1 (CLP): see [68] on this page. Problem 6 (nonexistence of a right inverse of the compact congruence semilattice functor on finite Boolean semilattices and zero-preserving join-embeddings): see [62] (with Jiří Tůma) on this page. Problem 8 (whether every distributive join-semilattice with zero is a retract of an ultraboolean one): see [59] on this page.
download the pdf presentation (created under beamer.cls) of my September 2007 Tale (Slovakia) talk A counterexample to the Congruence Lattice Problem.
Most of the material presented there comes from the paper [68] on this page.
download the pdf presentation (created under beamer.cls) of my May 2008 talk at the ROGICS08 conference in Mahdia (Tunisia) Large lower finite lattices with breadth three.
Most of the material presented there comes from the paper [72] on this page.
download the pdf presentation (created under beamer.cls) of my July 2008 talk in Darmstadt Modular lattices and von Neumann regular rings.
download the pdf presentation (created under beamer.cls) of my September 2008 talk at the SSAOS08 conference in Třešť (Czech Republic) Von Neumann coordinatization, Banaschewski functions, and larders.
download the pdf presentation (created under beamer.cls) of my February 2009 colloquium talk at the IRMA (Strasbourg) Treillis distributifs de congruences d'algèbres générales.
download the pdf presentation (created under beamer.cls) of my March 2009 talk at AAA77 (Potsdam) Representations of graph monoids by regular rings.
download the pdf presentation (created under beamer.cls) of my August 2009 talk at NSAC09 (Novi Sad, Serbia) From lifting objects to lifting diagrams: recent progress on larders and CLL.
download the pdf presentation (created under beamer.cls) of my February 2010 colloquium talk at Vanderbilt University (Nashville, TN, USA) Approximating the finite by the infinite: Larders and CLL.
download the pdf presentation (created under beamer.cls) of my June 2010 talk at BLAST 2010 (Boulder, CO, USA) Large free sets versus k-ladders: combinatorial issues raised by ``From lifting objects to lifting diagrams''.
download the pdf presentation (created under beamer.cls) of my August 2010 talk at ``New Trends in Noncommutative Algebra" 2010 (Seattle, WA, USA) Nonstable K-theory of regular rings and Banaschewski functions.
download the pdf presentation (created under beamer.cls) of the talk given by Luigi Santocanale's in July 2011 at ``Topology, Algebra, and Categories in Logic 2011 (Marseille, France) Sublattices of associahedra and permutohedra, based on our join paper [80] from my publications page.