Zsolt Lángi's Homepage

Main

Presentations

Presentations on international conferences
Presentations on national conferences
Other presentations
Bottom of the page
    Presentations on international conferences
  1. Steiner symmetrization on the sphere, 2024 Winter Meeting of the Canadian Mathematical Society, Richmond, British Columbia, Canada, November 29 - December 2, 2024.
  2. Honeycomb conjecture in normed planes, Sum(m)it 280, Budapest, Hungary, 08 July - 12 July 2024
  3. Dowker-type theorems for disk-polygons in normed planes, Convex and Discrete Geometry Workshop, Thematic Semester on Discrete Geometry and Convexity, Erdős Center, Budapest, September 4-8, 2023.
  4. On a strenghtened version of a problem of Conway and Guy on convex polyhedra, Interplay between Geometric Analysis and Discrete Geometry, BIRS-CMO 23w5105, Oaxaca, Mexico, June 25-30, 2023.
  5. Isoperimetric problems for zonotopes, Geometry, analysis & convexity (OLE), University of Sevilla, Sevilla, Spain, 20–24 June, 2022.
  6. From the separable Tammes problem to extremal distributions of great circles in the unit sphere, 2022 Szeged Workshop on Convexity, May 27–28, 2022, University of Szeged, Hungary (with Károly Bezdek)
  7. An isoperimetric problem for 3-dimensional parallelohedra, "Current Trends in Abstract and Applied Analysis", May 12 - 15, 2022, Ivano-Frankivsk, Ukraine.
  8. An isoperimetric problem for three-dimensional parallelohedra and translative, convex mosaics, Convex, Integral and Stochastic Geometry, conference in honor of Rolf Schneider and Wolfgang Weil, September 5-10, 2021, Bad Herrenalb, Germany.
  9. A solution to some problems of Conway and Guy on monostable polyhedra, 8th European Congress of Mathematics, Portorož, Slovenia, June 20-26, 2021.
  10. Soft packings: an overview, Soft Packings, Nested Clusters, and Condensed Matter, BIRS-CMO 19w5142, Oaxaca, Mexico, September 29 - October 4, 2019.
  11. The isoperimetric ratio decreases monotonically in the Eikonal abrasion model, 2019 Szeged Workshop on Convexity, University of Szeged, Szeged, Hungary, April 5-6, 2019.
  12. An algorithm to find maximum area polygons circumscribed about a convex polygon, SIAM Conference on Discrete Mathematics, University of Colorado, Denver, Colorado, USA, June 4-8, 2018.
  13. Classifications of convex bodies in terms of their static equilibria, Discrete Geometry Fest, Rényi Institute, Budapest, May 15-19, 2017.
  14. A genealogy of convex solids via local and global bifurcations of gradient vector fields, Szeged Workshop on Convexity, University of Szeged, Szeged, Hungary, November 13-14, 2015.
  15. The robustness of convex bodies, Geometry and Symmetry Conference, dedicated to Karoly Bezdek and Egon Schulte on the occasion of their 60th birthdays, University of Pannonia, Veszprém, Hungary, 29 June - 3 July 2015.
  16. An isoperimetric problem for d-polytopes, Intuitive Geometry, László Fejes Tóth Centennial, Alfréd Rényi Institute of Mathematics and Central European University, Budapest, Hungary, June 22 - 28, 2015.
  17. The mathematics of pebbles: equilibria and Morse functions, Geometry Days in Novosibirsk, Sobolev Institute of Mathematics, Novosibirsk, Russia, August 28-31, 2013.
  18. On the k-fold Borsuk numbers of sets, Szeged Workshop in Convex and Discrete Geometry, University of Szeged, Szeged, Hungary, May 21-23, 2012.
  19. On a discrete isoperimetric inequality, Workshop on Discrete Geometry (In: Thematic Program on Discrete Geometry and Applications, July - December 2011), Fields Institute, Toronto, Canada, September 13-16, 2011.
  20. Spindle convexity with respect to a convex body, János Bolyai Memorial Conference on the occasion of the 150th anniversary of his death, Budapest-Târgu Mureş Hungary-Romania, August 30 - September 4, 2010.
  21. On the Hadwiger numbers of topological disks, 115th Annual Meeting of the American Mathematical Society, Washington DC, USA, January 5-8, 2009.
  22. On the Hadwiger numbers of centrally symmetric starlike disks, Discrete and Convex Geometry Workshop, Budapest, Hungary, July 4-6, 2008.
  23. Covering a plane convex body by its congruent negative homothetic copies, Intuitive Geometry, BIRS 07w2144, Banff, Alberta, Canada, August 31 - September 3, 2007.
  24. On the Erdős-Szekeres conjecture for hexagons, Geometry Fest, A conference in celebration of Ted Bisztriczky's 60th birthday, Budapest, Hungary, June 11-15, 2007.
  25. Isoperimetric inequalities for kg-polygons, Convex Sets and their Applications, BIRS 06w5059, Banff, Alberta, Canada, March 4-9, 2006.
  26. Ball-polytopes and 1-convexity, 2005 Winter Meeting of the Canadian Mathematical Society, Victoria, British Columbia, Canada, December 10-12, 2005.
  27. A generalization of the Discrete Isoperimetric Inequality for piecewise smooth curves of constant geodesic curvature, The Kneser-Poulsen Conjecture, BIRS 05w2057, Banff, Alberta, Canada, November 3-5, 2005.
  28. Circle polygons, Calgary Workshop in Discrete Geometry, A conference in honor of Károly Bezdek on his 50th birthday, Calgary, Alberta, Canada, May 13-14, 2005.
  29. On a generalization of Hadwiger's translative kissing number problem, Convexity and Discrete Geometry, A Conference on The Sixtieth Birthday of Tudor Zamfirescu, Budapest, Hungary, June 30 - July 2, 2004.
  30. On the relative distances of six points in a plane convex body, Vth Geometry Festival, Budapest, Hungary, November 28-30, 2002.
  31. On several points in a plane convex body with large relative distances, International Conference in Geometry and Topology on the Occasion of Two Centenaries Anniversary of János Bolyai (1802-1860), Cluj-Napoca, Romania, October 1-5, 2002.
  32. On the relative lengths of the sides of a convex hexagon, Intuitive Geometry Conference V, Balatonföldvár, Hungary, June 5-9, 2000.
  33. On almost equidistant points on Sd-1, IVth Geometry Festival, Budapest, Hungary, November 30 - December 3, 1999.
    Presentations on national conferences
  1. Síkbeli halmazok felbontásai, Matematikát, Fizikát és Informatikát Oktatók 43. Országos Konferenciája, Dunaújváros, August 26-28, 2019.
  2. Kritikus pontok követése időben változó sima felületeken és finom diszkretizációikon , Szegedi Geometriai Nap 2017, Szeged, October 6, 2017. (jointly with Gábor Domokos).
  3. On non-separable families of convex sets, Oktoberfest in Combinatorial Geometry, Lausanne, Switzerland, October 17, 2014.
  4. Egy d-dimenziós diszkrét izoperimetrikus probléma, Szegedi Geometria Nap, Szeged, Hungary, May 22, 2014.
  5. A kavicsok matematikája, A Magyar Tudomány Hete a Dunaújvárosi Főiskolán - "Felfedező tudomány" konferencia, Dunaújváros, Hungary, November 12-17, 2013.
  6. Képzetes egyensúlyok: konvex test politóppal való közelítésekor kialakuló egyensúlyi pontok száma és jellege, XI. Magyar Mechanikai Konferencia, Miskolc, Hungary, August 30, 2011.
  7. Csillagszerű tartományok eltolt érintési számai,, Országos Konstruktív Geometria Konferencia, Eger, Hungary, April 23, 2010.
  8. On the Hadwiger numbers of centrally symmetric starlike disks, Canadian Young Researchers Conference in Mathematics and Statistics, Edmonton, Alberta, Canada, May 9-11, 2008.
  9. On the Bezdek-Pach Conjecture for Centrally Symmetric Convex Bodies, PIMS-CRG Workshop in Geometry and Harmonic Analysis, Calgary, Alberta, Canada, February 9-10, 2008.
  10. Az Erdős-Szekeres hatszög probléma, Matematika-, Fizika- és Számítástehcnika Oktatók XXXI. Konferenciája, Dunaújváros, Hungary, August 23-25, 2007.
  11. A result regarding the Erdős-Szekeres Conjecture, Western Canadian Conference for Young Researchers in Mathematics, Calgary, Alberta, Canada, May 4-6, 2007.
  12. Seven points in a plane convex body in large relative distances, PIMS Graduate Workshop in Geometry and Harmonic Analysis, Edmonton, Alberta, Canada, March 3-4, 2007.
  13. Lens-Convexity and Ball-Polyhedra, Third Annual Conference for Young Researchers in Mathematics and Statistics, Edmonton, Alberta, Canada, April 1-2, 2006.
  14. On the Relative Distances of Seven Points in a Plane Convex Body, Alberta Conference for Young Researchers in Mathematics, Calgary, Alberta, Canada, April 9-10, 2005.
  15. Homotetikus elhelyezés és C-távolság kapcsolata, Tudomány és Gazdaság Konferencia, Dunaújváros, Hungary, November 7, 2002.
  16. Relatív távolság - Minkowski távolság, Főiskolák Matematika, Fizika és Számítástechnika Oktatóinak XXV. Országos Konferenciája, Zalaegerszeg, Hungary, August 23-25, 2001.
  17. Véges sok síkbeli pontra vonatkozó kérdések, Országos Jubileumi Tudományos Konferencia és Szakkiállítás, Dunaújváros, Hungary, October 20-22, 1999.
  18. Körelhelyezések szabályos háromszögben, Főiskolai Matematika-, Fizika- és Számítástechnika Oktatók XXIII. Országos Konferenciája, Dunaújváros, Hungary, September 1-3, 1999.
    Other presentations
  1. Steiner symmetrization on the sphere, Budapest Big Seminar on Combinatorics + Geometry, Budapest, Hungary, October 4, 2024.
  2. Honeycomb Conjecture in normed planes and an α-convex variant of Dowker's theorem, Measure Theory Seminar, Kent State University, Kent OH, USA, May 13, 2024.
  3. Isoperimetric inequalities for three-dimensional parallelohedra and translative, convex mosaics, colloquium talk, Kent State University, Kent OH, USA, May 2, 2024.
  4. Honeycomb Conjecture in normed planes and an α-convex variant of Dowker's theorem, Budapest Big Seminar on Combinatorics + Geometry, Budapest, Hungary, April 12, 2024.
  5. Dowker-type theorems for disk-polygons in normed planes, Kerékjártó Geometriai Szeminárium, Dept. of Geometry, University of Szeged, Szeged, Hungary, March 21, 2024.
  6. Geometriai érdekességek, Science Campus lecture, Budapest, Hungary, November 18, 2022.
  7. An isoperimetric problem for three-dimensional parallelohedra, Budapest Big Seminar on Combinatorics + Geometry, Budapest, Hungary, October 8, 2021.
  8. Egy 3-dimenziós paralleloéderekre vonatkozó izoperimetrikus probléma, Kerékjártó Geometriai Szeminárium, Dept. of Geometry, University of Szeged, Szeged, Hungary, April 22, 2021.
  9. On some problems of Conway and Guy on monostable polyhedra, Measure Theory Seminar, Kent State University, Kent OH, USA, February 3, 2021.
  10. A solution to some problems of Conway and Guy on monostable polyhedra, Budapest Big Seminar on Combinatorics + Geometry, Budapest, Hungary, November 6, 2020.
  11. A solution to some problems of Conway and Guy on monostable polyhedra, Geometry Seminar, BME Geometria TSZ, Budapest, Hungary, October 27, 2020.
  12. Volume of the Minkowski sums of star-shaped sets, Alfréd Rényi Institute of Mathematics, Budapest, Hungary, October 25, 2019.
  13. Körlemez felbontása egybevágó részekre, Geometry Seminar, BME Geometria TSZ, Budapest, Hungary, October 22, 2019.
  14. Szférikus és euklideszi megvilágítási probléma, Geometry Seminar, BME Geometria TSZ, Budapest, Hungary, October 15, 2019.
  15. On the convexification effect of vector addition, Geometry Seminar, BME Geometria TSZ, Budapest, Hungary, March 26, 2019.
  16. Koebe poliéderek centrálása, Kerékjártó Geometriai Szeminárium, Dept. of Geometry, University of Szeged, Szeged, Hungary, March 21, 2019.
  17. The isoperimetric ratio decreases in the Eikonal abrasion model, DCG-DISOPT Seminar, EPFL, Lausanne, Switzerland, February 11, 2019.
  18. The isoperimetric quotient changes monotonically in the Eikonal abrasion model, Measure Theory Seminar, Kent State University, Kent OH, USA, February 4, 2019.
  19. The mathematics of pebbles: static equilibrium points in geometry, colloquium talk, Kent State University, Kent OH, USA, February 1, 2019.
  20. Konvex poliéderek egyensúlyi pontjai, Geometry Seminar, BME Geometria TSZ, Budapest, Hungary, December 4, 2018.
  21. The mathematics of pebbles: equilibrium points and convex bodies, colloquium talk, Budapest Semesters in Mathematics, Budapest, Hungary, October 25, 2018.
  22. Monotonicity of the isoperimetric ratio in the Eikonal model, Alfréd Rényi Institute of Mathematics, Budapest, Hungary, October 5, 2018.
  23. Centering Koebe polyhedra via Möbius transformations, Alfréd Rényi Institute of Mathematics, Budapest, Hungary, April 27, 2018.
  24. Koebe poliéderek centrálása 2, Geometry Seminar, BME Geometria TSZ, Budapest, Hungary, April 17, 2018.
  25. Koebe poliéderek centrálása, Geometry Seminar, BME Geometria TSZ, Budapest, Hungary, March 27, 2018.
  26. Az izoperimetrikus arány monoton csökken az Eikonal kopási modellben, Geometry Seminar, BME Geometria TSZ, Budapest, Hungary, March 13, 2018.
  27. Totálisan szeparálható elhelyezésekre vonatkozó egyenlőtlenségek, Hajós Seminar, Dept. of Geometry, Eötvös University, Budapest, Hungary, November 9, 2017.
  28. Totálisan szeparálható síkbeli elhelyezésekre vonatkozó becslések, Geometry Seminar, BME Geometria TSZ, Budapest, Hungary, October 31, 2017.
  29. An algorithm to find maximum area polygons circumscribed about a convex polygon, Alfréd Rényi Institute of Mathematics, Budapest, Hungary, September 22, 2017.
  30. Csillagszerű tartományok Hadwiger száma, Geometry Seminar in honor of the 60th birthday of András Bezdek, BME Geometria TSZ, Budapest, Hungary, March 14, 2017.
  31. Characterization of affinely regular polygons , Alfréd Rényi Institute of Mathematics, Budapest, Hungary, February 24, 2017.
  32. Affin-szabályos sokszögek karakterizációja, Geometry Seminar, BME Geometria TSZ, Budapest, Hungary, February 21, 2017.
  33. On maximum area convex polygons circumscribed about a convex polygon, DCG DISOPT Seminar, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland, November 15, 2016.
  34. Pozitív homotetikus testek nem-elválasztható családjai , Alfréd Rényi Institute of Mathematics, Budapest, Hungary, April 1, 2016.
  35. Separation problems for restricted families of sets II, ELTE Keresés és kommunikációs komplexitás szeminárium, Alfréd Rényi Institute of Mathematics, Budapest, Hungary, December 8, 2015.
  36. Merőleges affinitás hatása az izoperimetrikus arányra és a kritikus pontok számára, Alfréd Rényi Institute of Mathematics, Budapest, Hungary, November 27, 2015 (jointly with Gábor Domokos).
  37. Separation problems for restricted families of sets, ELTE Keresés és kommunikációs komplexitás szeminárium, Alfréd Rényi Institute of Mathematics, Budapest, Hungary, November 24, 2015.
  38. Konvex geometriai problémák, Geometry Seminar, BME Geometria TSZ, Budapest, Hungary, November 10, 2015.
  39. Síkidomok csókszáma, KöMaL Ifjúsági Ankét 2015., Eötvös University, Budapest, Hungary, October 28, 2015.
  40. Maximális területű köréírt poligonok, Geometry Seminar, BME Geometria TSZ, Budapest, Hungary, September 29, 2015.
  41. On Rogers-Shephard type volume inequalities, Privatissimum of the research units for Convex and Discrete Geometry and Geometric Analysis, Institute of Discrete Math. and Geom., TU Wien, Austria, March 19, 2015.
  42. On some Rogers-Shephard type volume inequalities, DCG DISOPT Seminar, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland, February 27, 2015.
  43. Egy diszkrét izoperimetrikus egyenlőtlenség, Optimalizálási szeminárium, BME, Budapest, Hungary, December 11, 2014.
  44. Egységgömb külső parallel tartományaival kapcsolatos sűrűségbecslések, Alfréd Rényi Institute of Mathematics, Budapest, Hungary, November 7, 2014.
  45. Külső parallel tartományokra vonatkozó sűrűségkorlátok, Geometry Seminar, BME Geometria TSZ, Budapest, Hungary, November 4, 2014.
  46. Egységgömbbe írt konvex politópok maximális térfogata, Geometry Seminar, BME Geometria TSZ, Budapest, Hungary, September 16, 2014.
  47. Maximum volume polytopes inscribed in the unit sphere, Alfréd Rényi Institute of Mathematics, Budapest, Hungary, May 9, 2014.
  48. Szeparálás megszorított halmazrendszerekkel, Geometry Seminar, BME Geometria TSZ, Budapest, Hungary, February 11, 2014.
  49. Konvex test eltolási testjének térfogata normált terekben, Geometry Seminar, BME Geometria TSZ, Budapest, Hungary, October 29, 2013.
  50. On a normed version of a Rogers-Shephard type problem, Alfréd Rényi Institute of Mathematics, Budapest, Hungary, October 25, 2013.
  51. Konvex alakzatok robusztussága, Kerékjártó Geometriai Szeminárium, Dept. of Geometry, University of Szeged, Szeged, Hungary, May 16, 2013.
  52. On the robustness of convex solids, Alfréd Rényi Institute of Mathematics, Budapest, Hungary, April 19, 2013.
  53. Testek konvex burkának térfogata, Alfréd Rényi Institute of Mathematics, Budapest, Hungary, March 22, 2013.
  54. The robustness of convex bodies, Hajós Seminar, Dept. of Geometry, Eötvös University, Budapest, Hungary, March 21, 2013.
  55. Konvex testek robusztussága, Geometry Seminar, BME Geometria TSZ, Budapest, Hungary, March 5, 2013.
  56. The genealogy of convex solids, Alfréd Rényi Institute of Mathematics, Budapest, Hungary, September 21, 2012 (jointly with Gábor Domokos).
  57. A konvex testek által generált Morse-Smale komplexusokról, Geometry Seminar, BME Geometria TSZ, Budapest, Hungary, September 11, 2012.
  58. About a generalization of Borsuk's problem, Hajós Seminar, Dept. of Geometry, Eötvös University, Budapest, Hungary, May 3, 2012.
  59. On the k-fold Borsuk numbers of a set, Alfréd Rényi Institute of Mathematics, Budapest, Hungary, April 13, 2012.
  60. Halmazok többszörös Borsuk számai II, Geometry Seminar, BME Geometria TSZ, Budapest, Hungary, April 3, 2012.
  61. Halmazok többszörös Borsuk számai, Geometry Seminar, BME Geometria TSZ, Budapest, Hungary, March 20, 2012.
  62. Ellipszoid karakterizációs tételek, Geometry Seminar, BME Geometria TSZ, Budapest, Hungary, October 11, 2011.
  63. Konvex testek egyensúlyi helyeinek vizsgálata, Hajós Seminar, Dept. of Geometry, Eötvös University, Budapest, Hungary, April 7, 2011.
  64. Testek képzetes egyensúlyi helyeinek vizsgálata II., Geometry Seminar, BME Geometria TSZ, Budapest, Hungary, March 22, 2011.
  65. Képzetes egyensúlyi helyek, Alfréd Rényi Institute of Mathematics, Budapest, Hungary, March 11, 2011.
  66. Testek képzetes egyensúlyi helyeinek vizsgálata I., Geometry Seminar, BME Geometria TSZ, Budapest, Hungary, February 22, 2011.
  67. Félskaláris-szorzat-terek önadjungált operátorai, Geometry Seminar, BME Geometria TSZ, Budapest, Hungary, March 16, 2010.
  68. Önadjungált operátorok Minkowski terekben, Alfréd Rényi Institute of Mathematics, Budapest, Hungary, March 5, 2010.
  69. Egy diszkrét izoperimetrikus egyenlőtlenség, Alfréd Rényi Institute of Mathematics, Budapest, Hungary, November 6, 2009.
  70. Egy diszkrét izoperimetrikus egyenlőtlenségről, Geometry Seminar, BME Geometria TSZ, Budapest, Hungary, September 15, 2009.
  71. Gömbpoliéderek tulajdonságai, Geometry Seminar, BME Geometria TSZ, Budapest, Hungary, February 24, 2009.
  72. Gömbpoliéderek és orsókonvexitás, Geometry Seminar, BME Geometria TSZ, Budapest, Hungary, December 2, 2008.
  73. Topologikus lemezek Hadwiger számai, Alfréd Rényi Institute of Mathematics, Budapest, Hungary, November 7, 2008.
  74. On the Hadwiger numbers of nonconvex regions, Discrete Geometry Seminar, Univ. of Calgary, Calgary, Alberta, Canada, October 18, 2007.
  75. On the Erdős-Szekeres Hexagon Problem, Eric Milner Scholarship Lecture, Univ. of Calgary, Calgary, Alberta, Canada, October 5, 2006.
  76. On the relative distances of seven points in a plane convex body, Discrete Geometry Seminar, Univ. of Calgary, Calgary, Alberta, Canada, April 28, 2005.
  77. Circle polygons II, Discrete Geometry Seminar, Univ. of Calgary, Calgary, Alberta, Canada, March 31, 2005.
  78. Relative distance of points in convex bodies, Discrete Geometry Seminar, Univ. of Calgary, Calgary, Alberta, Canada, September 21, 2004.
  79. Relative distance and touching a convex body by its homothetical copies, ATR, Bydgoszcz, Poland, January 22, 2003.
  80. Relatív távolság és homotetikus képek elhelyezésének kapcsolata, Alfréd Rényi Institute of Mathematics, Budapest, Hungary, October 18, 2002.
  81. Relatív távolság II., Alfréd Rényi Institute of Mathematics, Budapest, Hungary, October 11, 2002.
  82. Relatív távolság I., Alfréd Rényi Institute of Mathematics, Budapest, Hungary, September 27, 2002.
  83. On the relative distances of six points in a plane convex body, ATR, Bydgoszcz, Poland, April 23, 2002.
  84. On the relative distances of the sides of convex polygons, ATR, Bydgoszcz, Poland, September 19, Poland, 2000.
  85. Almost equidistant points on Sd-1, ATR, Bydgoszcz, Poland, September 12, 2000.
Presentations on international conferences
Presentations on national conferences
Other presentations
Top of the page



Last refreshed on March 21, 2013
Curriculum vitae
Publications
Presentations
Citations
Teaching/Tanítás
Contact Information
Elérhetőség
Links/Linkek