I. Konferencia-előadások/Conference presentations

  1. The 3rd International Workshop on Differential Geometry and its Applications (The First German-Romanian Seminar on Geometry), 18-23 September, 1997, Sibiu, Romania. Lecture title: On conformal and projective changes of Finsler metrics
  2. The 18th Winter School GEOMETRY and PHYSICS, 10-17 January, 1998, Srni, Czech Republic. Lecture title: On C-conformal changes of Riemann-Finsler metrics
  3. The 20th Winter School GEOMETRY and PHYSICS, 15-22 January, 2000, Srni, Czech Republic.
  4. The 11th National Seminar on Finsler and Lagrange Geometry, 17-20 February, 2000, Bacau, Romania.
  5. The 8th International Conference on Differential Geometry and its applications, 27-31 August, 2001, Opava, Czech Republic. Lecture title: Conservative semisprays on Finsler manifolds II.
  6. Debrecen-Opava Meeting 2002, 24-25 May, 2002, Debrecen, Hungary. Lecture title: On special type conformal changes of Riemann-Finsler metrics
  7. The 34th Symposium on Mathematical Physics, 14-18 June, 2002, Torun, Poland. Lecture title: On special type conformal changes of Riemann-Finsler metrics
  8. Geometria a felsőoktatásban, ELTE TTK Geometria Tanszék, 2002, Budapest.
  9. Workshop on Finsler Geometry and Its Applications, August 11-15, 2003, Debrecen, Hungary. Lecture title 1: On a new geometrical derivation of two-dimensional Finsler manifolds with constant main scalar (joint work with Sz. Vattamány). Lecture title 2: On the curvature of the indicatrix surface in three-dimensional Minkowski spaces
  10. Olomouc-Debrecen Meeting, 3rd Workshop on Differential Geometry, 16-18 October, 2003, Olomouc, Czech Republic.Lecture title: Conformal equivalence of Berwald manifolds
  11. 2004 International Symp. on Finsler Geometry, 2-14 August, 2004,  Tianjin, China.Lecture title: On Matsumoto's problem of conformally equivalent Berwald manifolds
  12. Differential Geometry and Physics, 29 August – 2 September, 2005, Budapest, Hungary. Lecture title: On an existence theorem of Wagner manifolds
  13. Applied Complex and Quaternionic Approximation vs. Finslerian Structures, 18-25 July 2006, Bedlewo, Poland. Lecture title: On the elements of Minkowski geometry and its applications in problems of metrizability
  14. Finsler extension of Relativity theory, 4 - 10 November, 2006, Cairo, Egypt. Lecture title: On the Wagner spaces (invited lecturer)
  15. Workshop on Finsler Geometry and Its applications, 28 May - June 2, 2007, Balatonföldvár, Hungary. Lecture title: On Berwald and Wagner manifolds
  16. Conference on inequalities and applications '07, September 9 -15, 2007, Noszvaj, Hungary.
  17. XXIX OTDK, 2009 március, Szombathely, Lecture title: Nagy Ábris: Általánosított kúpszeletek egy speciális osztályáról (témavezető: Dr. Vincze Csaba)
  18. Workshop on Finsler Geometry and Its applications, 28 May - June 2, 2009, Debrecen, Hungary. Lecture Title: On generalized conics and their applications (joint work with Á. Nagy)
  19. Bolyai Emlékkonferencia, 30 Aug.-04 Sept., 2010, Budapest-Marosvásárhely, Hungary-Romania. Lecture title: An introduction to the theory of generalized conics and their applications (joint work with Á. Nagy)
  20. XXX OTDK, 2011. április 27-29, Nyíregyháza. Lecture title: Nagy Ábris: Nemkonvex geometriai tomográfia (témavezető: Dr. Vincze Csaba)
  21. The 7th Bilateral Joint Workshop on Differential Geometry and Its Applications, 28-30, October, 2011, Ostrava, Czech Republic. Lecture title: On generalized conics and their applications
  22. Geometria, Grafika és vizuális környezetkultúra konferencia (GeoGra2012), 20-21 Jan., 2012, Budapest, Hungary. Lecture title: On generalized conics and their applications
  23. MAPLE T.A. Training, 09-10 July, 2012, Balatonfüred, Hungary.
  24. The 8th Bilateral Joint Workshop on Differential Geometry and Its Applications, Debrecen-Ostrava Meeting, 12-14 October, 2012, Balatonföldvár, Hungary. Lecture title: Lemniscates and polyellipses (in memoriam Pál Erdős)
  25. The 47th Symposium on Finsler Geometry, 23-25 Nov., 2012, Kagoshima, Japan. Lecture title: On generalized conics' theory and averaged Riemannian metrics in Finsler geometry
  26. Joint Events of Colloquium on Differential Geometry and Its Applications and IX-th International Conference of Finsler extensions of Relativity Theory, Aug. 26-30,2013, Debrecen, Hungary. Lecture title 1: Average processes in Finsler Geometry, Lecture title 2: Generalized Conics and their applications (joint work with Á. Nagy)
  27. The 48-th Symposium on Finsler Geometry, Sept. 14-17, 2013, Sapporo, Japan. Lecture title: Average processes in Finsler Geometry
  28. Mexican Conference of Discrete Mathematics and computational Geometry, Nov. 11-15, 2013, Oaxaca, Mexico. Lecture title: Integer programming in geometric tomography (joint work with Á. Nagy)
  29. Meeting on Tomography and Applications - Discrete Tomography and Image Reconstruction, 7-9 May, 2014, Milano, Italy.Lecture title: Continuity properties and their applications in X-ray tomography (joint work with Á. Nagy)
  30. Conference on Inequalities and Applications, 7-13 September, Hajdúszoboszló, Hungary. Lecture title: An optimization problem for the reconstruction of compact connected hv-convex planar sets by their coordinate X-rays
  31. 18th Workshop on Stochastic Geometry, Stereology and Image Analysis, 22-27 March 2015, Lingen, Germany. Poster section: Generalized conics' theory and its applications in geometric tomography
  32. Meeting on Tomography and Applications- Discrete Tomography and Image Reconstruction, Mathematics Department, Politecnico di Milano, April 20, 2015 – April 22, 2015. Lecture title: Generalized conics' theory and its applications in geometric tomography
  33. The 50th Symposium on Finsler Geometry, "Half a Century of Finsler Geometry in Japan", October 21 - 25, 2015, Hiroshima University, The Faculty Club "Gakushi Kaikan", Japan. Lecture title: On generalized Berwald manifolds: averaging and special metrics
  34. 2015 Szeged Workshop on Convexity, University of Szeged, Hungary, November 13-14, 2015. Lecture title: On Brickell's theorem
  35. 54th International Symposium on Functional Equations, June 12-19, 2016, Hajdúszoboszló, Hungary. Lecture title 1: On the discrete Pompeiu problem, Lecture title 2: On the generalization of a theorem due to Z. Daróczy (joint work with A. Varga)
  36. Conference on Inequalities and Applications 2016, 28 August – 3 September 2016, Hajdúszoboszló, Hungary. Lecture title: On computable classes of equidistant sets
  37. XII International Symposium on Generalized Monotonicity and Convexity, 27 August - 2 September 2017,  Hajdúszoboszló, Hungary. Lecture title: Lazy orbits: an optimization problem on the sphere

II. Tudományos együttműködés/scientific cooperations

  1. Dec. 6-13, 2015, University of Luxembourgh, Luxembourgh (functional equations, spectral analysis and synthesis, Pompeiu problem)

III. Egyéb előadások/Other presentations (in hungarian)

  1. ELTE TTK Geometria Tanszék Hajós Szeminárium, 31 of march 2005, Budapest, Hungary. Lecture title: Wagner-sokaságok egy egzisztencia tétele.
  2. A Magyar Tudomány Ünnepe 2011 - Csebisev-rendszerek, bonyolultságelmélet, általánosított kúpszeletek, 10 of Nov., 2011, Debrecen (DAB), Hungary. Lecture title: Általánosított kúpszeletek.
  3. Intézeti Szeminárium (Inst. of Math., Univ. of Debrecen), 14 of June, 2012, Debrecen, Hungary. Lecture title: Csatolt Riemann struktúra Finsler sokaságon.
  4. Kutatók Éjszakája (Inst. of Math., Univ. of Debrecen), 27 of Sept., 2013, Debrecen, Hungary. Lecture title: Konvex Geometria.
  5. A Magyar Tudomány Ünnepe 2013 - Erdős Pál és a Debreceni Egyetem Matematikai Intézetének kapcsolódási pontjai: Számelmélet, függvényegyenletek, Az Erdős-Vincze tétel, 21. Nov., 2013, Debrecen (DAB), Hungary. Lecture title: Az Erdős-Vincze tétel.
  6. Dr. Rapcsák Tamás Alapítvány, 14 of March, 2014, Budapest (Óbuda University), Hungary. Lecture title: Átlagolási eljárások és geometriai alkalmazásaik.
  7. TAMOP-4.1.2.A/1-11/1, 11 of April, 2014, Debrecen (University of Debrecen), Hungary. Lecture title: College Geometry - elementary geometry.
  8. TAMOP-4.1.2.A/1-11/1, 24 of April, 2014, Debrecen (University of Debrecen), Hungary. Lecture title: College Geometry - elementary geometry - MAPLE.
  9. Kossuth-hét, Kossuth Lajos Gyakorlógimnázium, Debrecen, Hungary 18 of Sept, 2014. Lecture title: Klasszikus geometriai problémák.
  10. Miskolci Egyetem, Gépészmérnöki és Informatikai Kar, Analízis Tanszék, Miskolc, Hungary 22 of Oct, 2014. Lecture title: Átlagolási eljárások és geometriai alkalmazásaik.
  11. Debreceni Egyetem, Informatikai Kar, Tanszéki Szeminárium, Komputergrafika és képfeldolgozás tanszék, 15 of April, 2015, Debrecen, Hungary. Lecture title: Általánosított kúpszeletek és tomográfiai alkalmazásaik.
  12. Analízis Kutató Szeminárium, 27 of May 2015, Debreceni Egyetem, Debrecen, Hungary. Lecture title: Generalized conics' theory and its applications (in english).
  13. Természettudományos és Mérnöki Fesztivál az Agórában, 22 of November 2017, Agóra Tudományos Élményközpont, Debrecen, Hungary. Lecture title: A természet könyvének nyelve.
  14. Kutatók Éjszakája 2017, 29 of September 2017, Debrecen, Hungary. Lecture title: Semmiből egy ujj, más világot: a geometria axiómái.
  15. Analysis Researchers' Seminar 2018 Spring, 24 of April 2018, Debreceni Egyetem, Debrecen, Hungary. Lecture title: On the average taxicab distance function and its applications (in english).