Some of my talks

• Dirac operators with electrostatic delta-shell interactions: spectral and scattering properties,
  a minisymposium talk at the "9th International Congress of Industrial and Applied Mathematics", Valencia, July 2019
• Topologically induced spectral behavior: the example of quantum graphs,
  a distiguished talk at the "8th International Congress of Chinese Mathematicians", Beijing, June 2019
• On loops, cones and stars: striving for the optimal shape,
  a talk at the conference "Results in Contemporary Mathematical Physics", in honor of Rafel Benguria, Santiago de Chile, December 2018
• Schrödinger operators exhibiting a sudden change of the spectral character,
  a talk at the IML workshop "Eigenvalues and Inequalities", Djursholm, May 2018
• Some unusual spectra of periodic quantum graphs,
  a talk at the conference "Chaos, and what it can reveal", in honor of Petr Šeba 60th birthday, Hradec Králové, May 2017
• Schrodinger operators with singular interactions on sets of codimension one,
  a talk at the conference "Operator Theory, Analysis and Mathematical Physics", Sankt Petersburg, August 2016
• Singular Schrodinger operators and Robin billiards: geometry, spectra and asymptotic expansions,
  a talk at the conference "Operators, Operator Families and Asymptotics", Bath, May 2016
• Schrodinger operators exhibiting parameter-dependent spectral transitions,
  a talk at the "Fourth Najman Conference on Spectral Problems for Operators and Matrices", Opatija, September 2015
• Approximating quantum graphs by Schrodinger operators on thin networks,
  a talk at the "8th Congress of Romanian Mathematicians", Iasi, June 2015
• A regular version of Smilansky model,
  a talk at GAMM Jahrestagung, Erlangen, March 2014
• Schroedinger operators with narrow channels: unusual semiclassical behavior and spectral estimates,
  a talk at Universite de Provence, Aix-Marseille 1, Chateau Gombert, October 2013
• The intriguing delta',
  a talk at the conference "Quantum Spectra and Transport", in honor of Yosi Avron, Jerusalem, June-July 2013
• Geometric properties of the ground state for Hamiltonians with singular interactions,
  a talk at the conference "Operator Theory, Analysis and Mathematical Physics", Barcelona, June 2012
• There is more in quantum mechanics,
  a talk at the WPI-AIMR workshop "Cutting-edge Functional Materials for Green Innovation", Sendai, February 2012
• Geometric properties of point-interaction Hamiltonians ground state,
  a talk at the workshop "The Boundary Value Problems and Spectral Geometry", Oberwolfach, January 2012
• Quantum graphs and their generalizations: Lectures 1 and 2, Lectures 3 and 4, Lectures 5 and 6,
  a minicourse at the summer school "Mathematical Theory of Quantum Networks", Les Diablerets, June 2011
• Periodic quantum graphs and their local perturbations,
  a talk at the workshop "Spectral and Scattering Theory and Related Topics", Kyoto, February 2011
• Quantum graphs: geometric perturbations, resonances, and Weyl asymptotics,
  a talk at the "Fifth International Conference on Operator Theory Analysis and Mathematical Physics", Bedlewo, August 2010
• Loops and trees: spectral properties of quantum graphs,
  a talk at the "2nd St. Petersburg Conference in Spectral Theory" dedicated to the memory of M.Sh. Birman, St. Petersburg, July 2010
• Quantum graphs with general vertex coupling: approximation by scaled Schroedinger operators on manifolds,
  a talk at the conference "Probabilistic and Analytical Methods in Mathematical Physics", Tsaghkadzor, September 2009
• Approximation of nontrivial quantum graphs by Schroedinger operators on Neumann networks,
  a talk at the conference "Mathematical aspects of transport in mesoscopic systems", Dublin, December 2008
• On the spectrum coming from "bending" a chain quantum graph ,
  a talk at the conference to honour M. Havlicek's 70th birthday, Prague, October 2008
• On quantum particles which change dimension,
  a talk at the workshop in memory of Vladimir Geyler, Berlin, April 2008
• Dirichlet network squeezed to graphs, with a bent tube example,
  a talk at the QMath10 conference, Moeciu, September 2007
• Inequalities for means of chords and related isoperimetric problems,
  a talk at the "6th Congress of Romanian Mathematicians", Bucharest, June 2007
• Quantum networks modelled by graphs,
  a talk at the "Joint Physics/Mathematics Workshop on Quantum Few-Body Systems", Aarhus, March 2007
• Quantum graphs and their applications,
  lectures given at the LMS/EPSRC short course "Analysis on Graphs and its Applications", Gregynog Hall, January 2007
• Lectures on quantum graphs, ideal, leaky, and generalized,
  a minicourse given in NZIMA, University of Auckland, November 2006
• Unstable system dynamics: do we understand it fully?,
  a talk at the 21st Max Born Symposium "Mathematical Problems in Nonrelativistic Quantum Dynamics", Wroclaw, June 2006
• Spectra of Laplacians in twisted tubes,
  a talk at the conference "Spectral Theory of Differential Operators", in honour of Michael Solomyak, Rehovot, May 2006
• Inequalities for means of chords, with applications to isoperimetric problems,
  a talk at the conference "Dynamics of Complex Quantum Systems", Rehovot and Haifa, December 2005
• Reflections on Zeno and anti-Zeno,
  a talk at the conference "Operator Semigroups, Evolution Equations and Spectral Theory in Mathematical Physics", Marseille-Luminy, October 2005
• Isoperimetric problems for point sources and inequalities for loop chords,
  a talk at the "Workshop on Computation and Analytical Problems in Spectral Theory", Gregynog, July 2005
• Scattering and resonances in leaky quantum wires,
  a talk at the conference "Days on Diffraction'05", Sankt Petersburg, July 2005
• Approximation for and by quantum graph Hamiltonians,
  a talk at the AMS Summer Research Conference "Quantum Graphs and Their Applications", Snowbird, Utah, June 2005
• Isoperimetric problems for singular interactions in the planes,
  a talk at the UAB05 conference "Differential Equations and Mathematical Physics", Birmingham, Alabama, April 2005
• Quantum waveguides: mathematical problems,
  a talk at the QMath9 conference, Presque'Ile de Giens, September 2004
• Approximations of graphs vertices,
  a talk at the conference "Operator Theory and Applications in Mathematical Physics", Bedlewo, July 2004
• Geometrically induced bound states in Dirichlet layers,
  a talk at the Wroclaw University, April 2004
• Schroedinger operators with strongly attractive graph-type interaction,
  a talk at the Okayama University, March 2004
• Quantum system coupling manifolds of different dimensionality,
  a talk at the Tokyo Metropolitan University, March 2004
• Resonance effects in transport through leaky graphs,
  a talk at the conference "Resonances - from Physics to Mathematics and back", Dresden, January 2004