Some of my past talks at the conferences and some of the invited seminars at the places I was not employed at the time are listed here. Seminars and lecture courses at current places of employment are not listed here. These talks may give impression of some of my scientific work and questions I was thinking about, good part of which is not yet reflected in my available articles.
“Ore localization for construction of quantum coset spaces”, talk given at “Noncommutative Geometry and Quantum Groups”, Banach Institute September 17-29, 2001.
“Localized coinvariants”, talk given at International Hopf Algebra Conference, De Paul University, February 1-3, 2002.
“Coset spaces for quantum groups”, invited talk given at Algebra Seminar, University of Indiana, Bloomington, April 2002.
“Coset spaces for Hopf algebras”, short communication presented at Section 02, Algebra, International Congress of Mathematicians, Beijing 2002.
“Noncommutative localizations and quotients for coactions of Hopf algebras”, short communication presented at AMS Central Section Meetings, Madison, WI, October 12-13, 2002.
“Noncommutative quotient spaces for quantum groups”, within Seminar in Algebra, University of Zagreb, September 25, 2003.
“Noncommutative localization, principal bundles and Hopf quotients”, topology seminar, Max Planck Institute für Mathematik, Bonn, December 12, 2003.
“Globalizing Hopf-Galois extensions”, invited seminar, Queen Mary College, London, February 23, 2004.
“Noncommutative torsors and quotients”, invited talk at the workshop Geometric methods in algebra and representation theory, Warwick, April 3, 2004.
“New and old actions on noncommutative spaces”, invited talk at the conference NOG III, Quantum Geometry, Mittag-Leffler Institute, Stockholm, May 17, 2004.
“Principal bundles in noncommutative geometry”, invited workshop talk at School and workshop on algebraic models of topological spaces and fibrations, Georgian Academy of Sciences, Tbilisi, Georgia, September 13-19, 2004.
“Categories of sheaves and generalizations”, invited talk given at Topology seminar Zagreb-Ljubljana, Zagreb, December 11, 2004.
“Lie algebra representations via deformations within Weyl algebras”, invited lecture at Workshop ‘Noncommutative Algebras’, Muenster, Germany, February 2-6, 2006.
“Some higher generalizations of equivariant sheaves”, talk given at Workshop WAGP06, Gerbes and groupoids, ESI, Wien, Austria, May 9-13, 2006.
“Realizations of noncommutative spaces”, invited lecture given at ‘IV Summer School in Modern Mathematical Physics’, Belgrade, Serbia, September 3-14, 2006.
“2-categorical descent, actions of monoidal categories and Hopf algebras”, talk given at the conference ‘New techniques in Hopf algebras and graded ring theory’, Brussels, September 19-23, 2006.
“Tangent 2-algebroid for Lie 2-groupoids”, invited lecture at Geometry seminar, University of Ljubljana, January 8, 2007.
“Universal noncommutative flag variety”, contributed talk, Advanced Course on Quasideterminants and Universal Localization, CRM Barcelona, January 29-February 9, 2007.
“Yang-Baxter condition, equivariance and cyclic cohomology”, talk given at School and conference on algebraic K-theory and its applications, ICTP Trieste, Italy, May 14-June 1, 2007.
“Some remarks on equivariance in noncommutative algebraic geometry”, talk given at the conference Categories in geometry and in mathematical physics, Split, September 23-28, 2007.
“Coproduct for algebra of momenta for Lie algebra type noncommutativity”, talk at Workshop on Field Theory, Non-commutative Geometry and Strings, Zagreb, Croatia, November 9-11, 2007.
“Globalizing Hopf-Galois extensions”, invited talk at ‘Seminar for noncommutative geometry’ (within programme on Galois theories), Banach Institute of Polish Academy of Sciences (IMPAN), Warszawa, Poland, November 19, 2007.
“Lie algebra type noncommutative spaces”, talk at Saha Institute for Nuclear Physics, Kolkata, India, December 11, 2007.
“Categorified actions and equivariance”, invited lecture at International Symposium on Recent Advances in Mathematics and Its Applications (ISRAMA 2007), Calcutta Mathematical Society, Kolkata, India, December 16-18, 2007.
“Lie algebra type noncommutative spaces”, talk given the Institute of mathematical sciences, Chennai, India, December 2007.
“Categorifications of equivariant sheaves and quotients”, Conference on topological stacks, April 1-5, CRM Barcelona, 2008, 1-hour lecture
“Categorified actions and 2-representations”, invited lecture, Dubrovnik, Workshop “Functional analysis X” (Representation theory), July 2008.
“Categorified symmetries”, School and conference on mathematical physics, Belgrade, July 2008.
“Monoidal categories, corings and (co)action-compatible localizations”, Noncommutative Geometry Seminar, Queen Mary College, London. November 12, 2008.
“Actions and equivariance in noncommutative geometry”, Colloqium, University of Liverpool, Departement of Mathematical Sciences, November 14, 2008.
“Higher nonabelian cohomology”, invited seminar in Topology, 75 min. Lausanne, March 10, 2009
“Higher descent and nonabelian cohomology via presheaves of strict omega-categories”, Advanced school on homotopy theory and algebraic geometry, IMUS, University of Sevilla, Sep 7-12, 2009.
“Kvazideterminante i nekomutativni prostor zastava”, Mathematical colloqium, March 11, 2010, Department of Mathematics, University of Osijek.
“Twisted nonabelian differential cohomology”, May 4, 2010, invited speaker at the conference Geometry at large II: Hodge and homotopy theories, Univ. of Vienna. May 3–7, 2010.
“Symmetrization map, realizations and Lie algebroids” (abstract), Vienna, October 14, 2010, activity Higher Structures in Mathematics and Physics, Erwin Schroedinger Institute for Mathematical Physics, Vienna
“Čech-like cocycles for noncommutative torsors” (abstract), University of Vienna, October 20, 2010, Seminar in algebraic geometry (lead by L. Katzarkov)
“Morphisms of noncommutative spaces”, 21. 5. 2011. Workshop, Algebraic structures in mathematical physics, Zagreb, May 20-21. 5. 2011.
“Globalizing Hopf-Galois extension”, Split, July 15, 2011, workshop “Homological mirror symmetry and category theory”
“Nonaffine noncommutative torsors”, University of Swansea, April 24, 2011
Invited lecture series (3 lectures, 2 hours each) Noncommutative geometry and its perspectives toward model theory during Universidad Nacional (de Colombia sede Bogota) Encuentro de Matematicas 2012, (July 24-26, 2012), logics section “Model theory and geometry”
Invited talk “Hopf torsors over corings”, ESF Exploratory workshop “Interfaces of Noncommutative Geometry with the Representation Theory of Hopf Algebras and Artin Algebras”, Istanbul Center for Mathematical Sciences, 7-10. August 2011
“Noncommutative principal bundles via corings”, invited in Séminaire de Topologie Algébrique, Univ. Paris 13, October 22, 2012, 14:00-15:00
Invited talk, Toward integration of Lie algebras in Loday-Pirashvili category, workshop Higher Lie theory II, Dec 9-11, 2013
Coherent states for quantum groups, invited seminar at Instituto Superior Tecnico, Lisboa, April 1, 2014 ˇ
Čech cocycles for noncommutative principal bundles, Seminario de fisica-matem atica, Instituto para a Investigacao Interdisciplinar da Universidade de Lisboa, April 11, 2014
Čech cocycles for noncommutative principal bundles, seminar at the University of Ljubljana May 5, 2014, 1 hour
Čech cocycles for quantum principal bundles, invited seminar, May 16, 2014, Charles University, Prague, 1 hour
contributed 40-min talk Semantics of noncommutative geometry at the workshop ”Language, mind and knowledge”, Zagreb, June 18-20, 2014
Categorifying twisting function, Topology seminar Maribor-Ljubljana-Zagreb, Maribor, March 7, 2015, 90 min.
Noncommutative geometry and coherent states, Seminar in differential geometry, University of Hradec Králové, May 14, 2015, 90 min.
Hopf algebroid of differential operators, Seminar in differential geometry, Masaryk University, Brno, May 18, 2015, 1hr
A Hopf algebroid related to the automorphisms of a Lie algebra, “Representation theory XIV”, Dubrovnik, June 23, 2015, 50-min
contributed talk Semiquantals and localizations, workshop Topos a l’IHÉS,
Some examples of Hopf algebroids and generalizations, Invited talk, Workshop Higher geometry and field theory, Luxembourg, Dec 9-11, 2015
Coherent states for Hopf algebras, contributed talk (15 min) at 6th Croatian Congress of Mathematicians, June 2016
Hopf algebroid twists for deformed spaces, invited talk July 7, 2016, 15:50–16:20, at Max Born Symposium Noncommutative geometry, quantum symmetries and quantum gravity II, Wroclaw, July 4-7, 2016 (abstract)
satellite conference of 7th ECM, Differential Geometry and its Applications, July 11 - 15, 2016, Brno, talk within section Geometry and Physics
Gluing quantum principal bundles, invited talk at the workshop Topological and geometric aspects of quantum spaces: field theory and causal structure, 13–17 March 2017 SISSA, Trieste
invited talk Hopf algebroids in description of noncommutative phase spaces at the workshop Recent Advances in T/U-dualities and Generalized Geometries, June 6-9, 2017, Zagreb
Symmetry objects for geometries based on monoidal categories, invited talk at the workshop -supersymmetry, Dec 14–15, 2017, Luxembourg
Spring School on Geometry and Topology, (schedule), May 1—31, 2018, University of Hradec Králové, Quotients, orbifolds and stacks, Series of 6 talks at Hradec Králové, May 2018; first five talks are recorded I, II, III, IV, V
Localization approach to noncommutative flag varieties, contributed talk at Winter school geometry and physics, Srni, Jan 12-19, 2019
A connection between ordinary differential equations and a Hopf algebroid, contributed talk at Differential geometry and its applications, Hradec Králové, Sep 2-7, 2019 (Section G, Homotopy Theoretic Structures in Differential Geometry)
Hopf algebroids in deformation quantization, canonical operator and (non)associativity, Oct 28, 2019, Seminaire Géométrie et Quantification, Institut des Hautes Études Scientifiques
Fiber bundles over noncommutative flag varieties, Séminaire de physique mathématique et topologie algébrique, Angers, Nov 12, 2019
Gluing bundles over noncommutative flag varieties, Seminar Prague–Hradec Králové, Cohomology in algebra, geometry, physics and statistics, (via Zoom) Nov 4, 2020
Twisting Hopf algebroids and beyond, invited talk at online workshop „Advances in Hopf algebroids”, July 7, 2021
Geometry of coherent states, lecture minicourse at Online Summer School on Geometry and Topology, Hradec Králové and Novosibirsk, July 7-Aug 6, 2021
Sheaf theory, localization and gluing, lecture minicourse at Online Summer School on Geometry and Topology, Hradec Králové and Novosibirsk, July 7-Aug 6, 2021
Nonassociative deformations and Hopf algebroids, Aug 9, 2022, invited lecture at Erwin Schroedinger Institute, Vienna, Activity: Higher Structures and Field Theory, Aug 1–26, 2022
Jan 14, 2014, Globalized torsors for Hopf algebras via extensions of corings, Srní winter school on geometry and physics, Jan 13-19, 2024
Torsors for geometrically admissible actions of monoidal categories, invited seminar at the workshop A quantum day in Bologna, Bologna, April 8, 2024
Sep 26, 2024, Global Gauss decomposition of quantum groups, invited lecture at Quantum groups and Lie groups, Zagreb, 25-26. 9. 2024
Posters:
“Categorified actions in geometry”, conference poster, ESF Mathematical Conference ‘Algebraic aspects in geometry’, Bedlewo, Poland, October 17-21, 2007.
“Actions of monoidal categories which represent actions in noncommutative geometry”, poster presented at Isaac Newton Institute Workshop “Trends in Noncommutative Geometry”, Cambridge 18-22. December 2006.
“Hopf algebroid twists in deformation quantization”, Poster, Autumn School From Poisson Geometry to Quantum Fields on Noncommutative Spaces, Oct 05–10, 2015 Wuerzburg, Nov 23–27, 2015.
Blockchain courses given:
Two 2-hour meetups Introduction to blockchain (for developers), Vestigo, October 2018
Full day course (sole lecturer), Blockchain for business, Zicer accelerator, Zagreb, June 8, 2019
4 day course (main lecturer), Blockchain and smart contracts (for specialists), Mrežnica, June 2019
I have given many more informal lectures on blockchain elsewhere (including online).
Last revised on November 22, 2024 at 12:34:04. See the history of this page for a list of all contributions to it.