Curriculum Vitae
Jenő Szirmai
01.09.2018
Personal information
Born in 1964 in Budapest
(Hungary). Father: Jenő Szirmai, mother: Eleonóra Fischer,
sister: Eleonóra Szirmai. Married
(1990) to Csilla Máté, 4 children: Jenő (1991),
Boldizsár (1995), Csilla (1997),
Róza (2012).
Office address: Department of
Geometry, BUTE
H-1521 Budapest.
Tel: (0036) (1) 463-2645 Fax: (0036) (1) 463-1050.
Parmanent address: Rákóczi u. 10.
H-2092. Budakeszi, Hungary.
E-mail: szirmai@math.bme.hu.
www.math.bme.hu/~szirmai
Education
Studied mathematics, physics and
descriptive geometry at the Eötvös Loránd
University of Budapest (ELUB),
Faculty of Natural Sciences from 1984 to 1989.
Diploma of high-school teacher in
1989.
Scientific degrees
PhD at Technical University of
Budapest , 1998. with dissertation "Metric realizations of combinatorial
tilings in hyperbolic space" (in Hungarian) TUB 1998.
Employment
Teacher at Gymnasium Városmajor
in Budapest (1988-1992).
Assistant at TUB et Department of
Geometry (1992-1998).
Assistant professor at TUB at
Department of Geometry from 1998.
From 2000 Associate Professor at TUB at Dept. of Geometry
Habilitation, 2017.
Deputy head of department of
Geometry 2016-
.
Languages
Hungarian mather tongue.
Russian (1989), German (1997),
Spanish (1989),
English.
Supervisory activity:
Professional Activities
Reviewer of Zentralblatt für Mathematik.
Member
of the editorial board of Studies of the University of Zilina
Awards:
1989 Prize for the results presented
in the National Scientific Conference of Students
2000 Won the Julius Strommer prize
of the J. Strommer International Foundation of Geometry
2009 On the opinion of students won
the “Theacher of the year” prize.
2013 On the opinion of students won
the “Theacher of the year” prize.
2018 On the opinion of students won
the “Theacher of the year” prize.
Main
research areas:
Geometric transformation groups and their applications in
crystallography, in discrete and differential geometry;
Crystallography in non-Euclidean geometries,
Algorithms for metric realizations of space tilings;
Bolyai-Lobachevskian hyperbolic geometry.
Construction of tilings in Euclidean plane and space,
Algoritmical approach of tilings in various planes,
Visualization of homogeneous geometries by computer,
Applications of geometry,
Visits:
Guest researches at University of
Potsdam, collaboration with Prof.Dr.Benno Klotzek (1995).
Guest researches at RWTH Aachen,
collaboration with Prof.Dr.W. Plesken (2000).
Guest researches at TU.Wien,
collaboration with Prof.Dr. H. Stachel (2003).
Guest researches at TU.Wien,
collaboration with Prof.Dr. H. Stachel (2005).
Guest researches at TU.Wien,
collaboration with Prof.Dr. H. Stachel (2007).
Guest researches at TU.Wien,
collaboration with Prof.Dr. H. Stachel (2010).
Visiting Professor, TU. Wien Institute of
Discrete Mathematics and Geometry (2011).
Membership:
Bolyai J. Math. Society since 1992
Member of Public Corporation of the Hungarian Academy of
Sciences since 2004
Member of International Soc. for Geometry and
Graphics,
Secretary of the Kuratorium of the Gyula Strommer Fundation,
Member of Hungarian Soc. for Geometry and Graphics
since 2013.
Publications
Books:
Informations: http://www.math.bme.hu/~szirmai/publ.html
vagy az MTMT-MTA adatbázisban:
[1] Á. G. Horváth – J. Szirmai, Nemeuklideszi
geometriák modelljei,
Typotex
Kiadó, Budapest (2004), ISBN: 963 9548 40
5.
Typotex
kiadó, Budapest [2009]: ISBN-13 978-963-9548-40-4.
[2] Szirmai J., Kombinatorikus térkikövezések
metrikus realizációi a hiperbolikus térben.
Habilitációs
értekezés, BME (2016).
Rendiconti
del Circolo Matematico di Palermo Series 2, 67 [2018], 307-322,
DOI: 10.1007/s12215-017-0316-8,
arXiv:1510.03208.
[5] J. Szirmai, Hyperball packings in hyperbolic 3-space,
Publications de l'Institut Mathématique, 103(117) [2018],
129-146,
DOI: 10.2298/PIM1817129M, arXiv: 1612.04541.
Filomat [2018], 32/1, 87-100, DOI: 10.2298/FIL1801087S, arXiv: 1502.02107.
[8] E. Molnár – I. Prok - J. Szirmai, On maximal homogeneous 3-geometries and
their visualization,
Universe , 3/4, (2017), 83, 12 pages;
DOI:10.3390/universe3040083.
[9] J. Szirmai,
Packings with horo- and hyperballs generated by simple frustum orthoschemes,
Journal of Geometry, 108, 2017), 393–409, DOI: 10.1007/s00022-016-0346-y.
[11] E. Molnár - J. Szirmai – A.
Vesnin, Geodesic and translation ball packings
generated by prismatic tesselations of
the universal cover of SL(2,R),
Results in Mathematics, 71(3),
(2017), 623-642, DOI:
10.1007/s00025-016-0542-y.
[12] E. Molnár - J. Szirmai, On hyperbolic
cobweb manifolds,
Studies of the University of Zilina, Mathematical Series, 28 (2016), 43-52,
Rocky Mountain Journal of
Mathematics, 46/3, (2016), 1055--1070, arXiv: 1403.3192.
[14] G. Csima -- J. Szirmai, Isoptic surfaces of convex polyhedra,
Computer Aided Geometric Design (CAGD) , 47, (2016), 55-60,
DOI:
10.1016/j.cagd.2016.03.001 arXiv:1510.07718.
Kragujevac Journal of Mathematics, 40(2), (2016), 260-270,
DOI:10.5937/KgJMath1602260S, arXiv: 1306.4221.
Symmetry: Culture and Science, Vol. 27, Number 4, [2016],
261-277.
Studies of the University of Zilina, Mathematical Series 27, (2015), 35-62.
Journal of Geometry, 105/3, (2014),
601-614, DOI: 10.1007/s00022-014-0222-6.
[22] J. Szirmai, A candidate to the
densest packing with equal balls in the Thurston geometries,
Beiträge zur Algebra und Geometrie (Contributions to Algebra and
Geometry),
55/2, (2014), 441-
452, DOI: 10.1007/s13366-013-0158-2, arXiv:1210.2202 .
[23] J. Szirmai,
Regular prism tilings in SL(2,R) space,
Aequationes mathematicae 88/1
– 2, (2014), 67-79, DOI: 10.1007/s00010-013-0221-y, arXiv:1206.4408 .
[25] E. Molnár - J. Szirmai – A.
Vesnin, The optimal Packings by translation balls in SL(2,R),
Journal of Geometry, 105 (2), (2014), 287-306, DOI: 10.1007/s00022-013-0207-x.
[26] G.
Csima - J. Szirmai, Isoptic curves of conic sections in constant curvature
geometries,
Mathematical Communications, 19 (2014), 277-290 arXiv: 1301.6991.
Publ. Math.
Debrecen, 84/1-2 (2014),
189–203, DOI: 10.5486/PMD.2014.5832, arXiv: 1304.0546.
[28] G. Csima - J. Szirmai, On
the isoptic hypersurfaces in the n-dimensional
Euclidean space,
[29] J.
Szirmai, On lattice coverings of the Nil space by congruent geodesic balls,
Aequationes mathematicae, 85 (2013),
471–482, DOI: 10.1007/s00010-012-0158-6, arXiv:1112.1969.
[31] J.
Szirmai, Geodesic ball packings in space for generalized
Coxeter space groups,
Mathematical Communications, 17/1, (2012), 151-170.
[32] B. Odehnal -
J. Szirmai, Packing Coxeter honeycombs with
sequences of spheres,
[33] J.
Szirmai, Lattice-like translation ball packings in Nil space,
Publ. Math.Debrecen, 80/3-4, [2012], 427-440, DOI: 10.5486/PMD.2012.5117.
Acta Mathematica Hungarica, 136/1-2, [2012], 39-55, DOI: 10.1007/s10474-012-0205-8, arXiv:1105.4315.
[35] E.
Molnár, J. Szirmai, Classification of Sol lattices,
Geometriae Dedicata, 161, (2012), 251-275, DOI: 10.1007/s10711-012-9705-5, arXiv:1106.4646.
[36] J. Pallagi - B. Schultz - J. Szirmai, On regular square prism tilings in
SL(2,R) space,
Monatshefte für Mathematik, 168, [2012],27-47 DOI: 10.1007/s00605-012-0393-x, arXiv:1007.0722.
[38] J.
Szirmai - J. Pallagi, Visualization of the Dirichlet-Voronoi cells in space,
[39] J. Szirmai - G. Csima, Isoptic curves to
parabolas in the hyperbolic plane,
[40] J.
Szirmai - B. Schultz, On parallelohedra of Nil-space,
[41] J.
Pallagi - B. Schultz - J. Szirmai, Equidistant surfaces in Nil space,
Studies of the University of Zilina,
Mathematical Series, 25, [2011),
31-40.
[42] J.
Pallagi - B. Schultz - J. Szirmai, Equidistant surfaces in space,
[43] E. Molnár- J.
Szirmai - J. R. Weeks, 3-simplex tilings, splitting orbifolds and manifolds,
Symmetry:
Culture and Science, Vol. 22, Numbers 3-4, [2011], 435-459.
Kragujevac Journal of Mathematics, Vol. 35,
Number 2, [2011], 249-263.
[45] J. Szirmai,
Geodesic ball packings in space for generalized
Coxeter space groups,
[46] G. Csima - J. Szirmai, Isoptic curves in
hyperbolic plane,
Studies of the University of Zilina, Mathematical Series. Vol. 24 (2010), 15-22.
[47] Szirmai, J. The densest translation ball
packing by fundamental lattices in Sol space,
Matematikai
Lapok 16, Numbers 2, [2010],
79-92.
[50] E. Molnár- J. Szirmai, Symmetries in the 8 homogeneous 3-geometries.
Symmetry: Culture and Science, Vol. 21, Numbers 1-3, [2010], 87-117.
Journal
of Geometry, 95 , (2009], 91–133.
Studies of the University of Zilina, Mathematical Series. Vol. 22 (2008), 39-50.
[54] E.
Molnár - J. Szirmai, Minimally presented orientable splitting 3-manifold with
one cusp,
Studies of the University of Zilina, Mathematical Series. Vol. 22 (2008), 19-30.
Beiträge zur Algebra und Geometrie (Contributions to
Algebra and Geometry).
[56] J.
Szirmai, The densest geodesic ball packing by a type of Nil lattices,
Beiträge zur Algebra und Geometrie (Contributions to
Algebra and Geometry).
Acta Mathematica Hungarica 111 (1-2) (2006), 65-76.
Publ. Math. Debrecen, 69 (1-2) (2006), 195-207.
Zeitschrift für Kristallographie, 221/1 (2006), 99-103.
[62] J. Szirmai: Horoball packings for the
Lambert-cube tilings in the hyperbolic 3-space,
Beiträge zur Algebra und Geometrie (Contributions to
Algebra und Geometry) 46 No. 1 (2005), 43-60.
Beiträge zur Algebra und Geometrie (Contributions to
Algebra and Geometry) 46 No. 2 (2005), 545-558.
Studies of the University of Zilina, Mathematical Series. Vol. 18/1 (2004), 49-62.
[65] J.
Szirmai: Flächentransitiven Lambert Würfeltypen und ihre optimale
Kugelpackungen ,
Acta Mathematica Hungarica, (2003), 100 (1-2), 101-116.
Periodica Polytechnica Ser. Mech. Eng. (2003), 47/1 57-64.
Studies of the University of Zilina, Mathematical Series. Vol. 16/1 (2003), 89-98.
Studia Sci. Math. Hungarica, (2002), 39 443--483.
Journal for Geometry and Graphics (2001), Vol 5, No 2. 133-144.
Alkalmazott Matematikai Lapok , 19 (1999), 87-111.
[72] E.
Molnár - I. Prok - J. Szirmai, The Gieseking manifold and its surgery
orbifolds,
Novi Sad, Journal of Mathematics (1999),
Vol 29, No. 3.
187-197.
Periodica
Mathematica Hungarica. 35 (1-2)
(1997), 47-94.
Acta Mathematica Hungarica, 73 (3)
(1996), 247-261.
Annales Univ. Sci. Budapest. Sect. Math. 39, (1996),
145-162.
Annales Univ. Sci. Budapest. Sect. Math. 38, (1995), 95-108.
[77] J.
Szirmai, Typen von flächentransitiven Würfelpflasterungen,
Annales Univ. Sci. Budapest. Sect. Math. 37, (1994) 171-184.
[78] Szirmai
J., Néhány tércsoport optimális gömbkitöltése,
Alkalmazott Matematikai Lapok 17 (1993), 87-99.
[79] J.
Szirmai, Optimale Kugelpackungen für die Raumgruppen F23, P432 und F432,
Periodica Polytechnika Ser. Mech. Eng. 36, (1992),
317-331.
Scientific
conference publications
[80] B. Schultz - J. Szirmai, Interesting
surfaces in Nil space,
Proceedings
of 8th International Conference on Applied Informatics,
(ICAI) Eger, (2010) Hungary, Vol.1 185-192.
[81] J.
Szirmai, Visualization of the geodesic ball packings in the Nil geometry
Proceedings
of 7th International Conference on Applied Informatics
(ICAI) Eger, (2007) Hungary, 163-174.
[82] J.
Szirmai: Iterationsserien der Dirichlet-Voronoi Zerlegungen,
Proceedings
of „Dresden Symposium Geomety ”. (2003), 347-355.
Proceedings
of the PhD Conference, Doctoral School of Mathematics an Computer Science,
Budapest
University of Technology and Economics, [2013] , 51-55, ISBN 978-963-313-085-8.
[87] B.
Schultz - J. Szirmai, Densest geodesic ball packings to space groups generated
by rotations,
Proceedings of the PhD Conference, Doctoral School of
Mathematics an Computer Science,
Budapest University of Technology and Economics, [2013] , 56-61,
ISBN 978-963-313-085-8.
Proceedings of the Czech-Slovak Conference on Geometry and
Graphics,
[92] E. Molnár – J. Szirmai, Non-Euclidean polyhedral manifolds, models and
visualization,
Proceedings of the Slovak-Czech
Conference on Geometry and Graphics,
Accepted scientific publications:
[94] G. Csima - J. Szirmai,
Isoptic curves of generalized conic sections in the hyperbolic plane,
Ukrainian Mathematical Journal
(2017),
arXiv: 1504.06450.
[95] J. Szirmai,
Nil geodesic triangles and their interior angle sums,
Bulletin
of the Brazilian Mathematical Society, New Series (2018),
DOI: 10.1007/s00574-018-0077-9,
arXiv: 1611.05613.
Filomat (2018), arXiv: 1610.01500.
Submitted scientific publications:
Submitted Manuscript [2017], arXiv: 1607.04401.
[99] J. Szirmai,
Triangle angle sums related to translation curves in Sol geometry,
Submitted Manuscript [2017], arXiv: 1703.06646.
Submitted Manuscript [2017], arXiv: 1705.04207.
[101] J. Szirmai,
Decomposition method related to saturated hyperball packings,
Submitted Manuscript (2017), arXiv: 1709.04369.
Submitted Manuscript (2017), arXiv:1710.02394.
[103] E. Molnár – J. Szirmai, Infinite series of compact hyperbolic manifolds,
as possible crystal structures,
Submitted Manuscript (2018), arXiv:1711.09799.
[104] J. Szirmai, Hyperball packings related to octahedron and cube tilings in
hyperbolic space,
Submitted Manuscript (2018), arXiv: 1709.04369.
[105] R. T. Kozma – J. Szirmai, New
horoball packing density lower bounds in hyperbolic 5-space,
[106] Szirmai J., Ábrázoló
geometria, (Munkafüzet középiskolák
számára) 1992 Budapest
[107] E. Molnár - I. Prok - J.
Szirmai, Kristályok és periodikus kövezések,
Erdélyi Matematikai Lapok (Brassó)
(2005) 6, 1-15.
Conferences
and invited lectures:
1. Konstruktive Geometrie, Balatonföldvár 1993, Hungary,
Typen von Flächentransitiven Würfelpflasterungen
2. Intuitive Geometry, Budapest 1995, Hungary,
Metric realization of the maximal solid transitive simplex tilings in
3-space
3. Konstruktive Geometrie, Balatonföldvár 1995, Hungary,
Einige Pflasterungen des hyperbolischen Raumes von Flächentransitiven
Bewegungsgruppen
4. 2nd Geometry Festival, Budapest 1996, Hungary
Metrische Realisierungen von zwei Familien der Körpertransitiven
Tetraederpflasterungen
5. Potsdamer Geometrie Tagung, Potsdam 1997, Germany,
Optimalen Kugelpackungen für die zum Würfelsystem gehörigen Raumgruppen
6. 2nd International
Conference on Applied Informatics Eger-Noszvaj, Hungary, 1997,
Ein Computerlgorithmus für die Bestimmung der Optimalen Kugelpackungen
7. International Scientific Conference of Mathematics Zilina, Slovakia,
1998,
Metric realization of the maximal solid transitive simplex tilings
8. Konstruktive Geometrie, Balatonföldvár, 1998, Hungary,
Zwei weitere Extremaleigenschaften der optimalen Kugelpackungen
9. Geometrietagung, Vorau, Österreich, 1999,
Über die Dirichlet-Voronoi Zerlegungen
10. 4th Geometry Festival (Discrete Geometry and Rigidity),
Budapest, Hungary, 1999,
A simply presented orientable splitting 3-manifold with one cusp
11. Konstruktive Geometrie, Balatonföldvár, Hungary, 2001,
Optimale Kugelpackungen für die Lambert- Würfeltypen
12. Aspects of Hyperbolic Geometry,
Fribourg, Switzerland 2001,
13. Geometrietagung, Vorau, Österreich, 2002,
Klassifikation der zum Würfelsystem gehörigen D-V Zellen
14. János Bolyai Conference on Hyperbolic Geometry, 2002, Budapest,
On an infinitive
hyperbolic orbifold series
15. Dresden Symposium Geometrie, (zum
Gedenken an Rudolf Bereis), 2003, Germany,
Die Serien der Dirichlet-Voronoi
Zerlegungen
16. International Mathematical Conferences, Zilina, Slovakia, 2003,.
Optimal horoball packings for the Lambert cube tilings
17. Crystallography at the start of the 21-st century
Mathematical and Symmetry Aspects, Satellite of ECM-22, 2004, Budapest,
Optimal Ball Packings
for Crystallographic Orbits and Their Visualisations by Computer
18. Geometrietagung, Vorau, Österreich, 2004.
The optimal ball and horoball packings to the Coxeter honeycombs
19. Konstruktive Geometrie, Balatonföldvár, 2005, Hungary.
i. The Optimal Horoball Packings Of the Coxeter Tilings in the Hyperbolic
n-Space
ii. Generalized Polygonal Wankel Engines
20. 1st Croatian Conference on Geometry and Graphics, Bjelolasica 2006.
Determining the Optimal Hyperball Packings to the Regular Prism
Tilings in the Hyperbolic n-Space
21. Geometrietagung, Vorau, Österreich, 2007.
On Ball Coverings in Nil Space
22. 4th Croatian Mathematical Congress, June 17 - 20, 2008, Osijek, Croatia
On visualization of non-Euclidean
geometries
Lattices in the Nil and Sol spaces
Classification
and visualization of 3-lattices in Sol-geometry
25. The
SYMMETRY FESTIVAL 2009, Budapes.t
Symmetries in
the 8 homogeneous 3-geometries
26. 14th
Scientific-Professional Colloquium on Geometry and Graphics, Velika, September
6−10, 2009.
Projective
metric visualization of the 8 homogeneous 3-geometries
27. János Bolyai Memorial Conference,
Budapest-Marosvásárhely, augusztus 30 −szeptember 4, 2010.
Optimally
dense packings for fully asymptotic Coxeter tilings by horoballs of different
types
28. 2nd Croatian Conference on Geometry and Graphics, September5 −10, 2010, Sibenik, Croatia.
Ball packings
in Thurston geometries (invited talk)
30. Conference on Geometry Theory and Applications, June
24 - 28, 2013, Ljubljana, Slovenia.
a. Densest
Geodesic Ball Packings to S²xR Space Groups generated by Rotations (with B. Schultz),
b. Isoptic
Curves of Generalized Conic Sections in Hyperbolic Geometry (with G. Csima)
a. Densest geodesic and translation ball
packings by some ~ SL2R space groups (with E. Molnár)
b. On hypersphere packings in the 5-dimensional
hyperbolic space
The Euclidean visualization and modelling the 8 homogeneous Thurston
3-geometries
34. 13th
Serbian Mathematical Congress, Vrnjačka Banja, Serbia, May. 22-25, 2014.
Classical
ball packing problems in the Thurston geometries, (invited talk) (with E. Molnár)
Hyperball
packings generated by prismatic tessellations, (invited
talk)
New bounds
for the optimal ball packing density of hyperbolic 4-space (with R.T.Kozma)
Kepler-type problems
in Thurston geometries (with E. Molnár)
a. The best
horoball packings for hyperbolic3- and 4-space (with R.T.Kozma)
b. Hyp-hor
packings in n-dimensional hyperbolic
spaces
c. Isoptic
surfaces in 3D (with G. Csima)
38. XIX.
Geometrical Seminar, 28.08.- 04.09, 2016 Zlatibor, Serbia.
Top dense
ball packings and coverings in hyperbolic space, (invited talk)
Top dense
ball packings and coverings by hyperbolic complete orthoscheme groups (with E. Molnár)
Triangles in
SL(2,R) Geometry (with G. Csima)
a. On
Hyperbolic Crystallography, Cobweb Manifolds (with E. Molnár)
b.
Translation Triangles, Tetrahedra and Bisector Surfaces in Sol Geometry
c. Isoptic
curves and surfaces
41. Szegedi Geometria Nap, 2017,Hungary .
Diszkrét
geometria Thurston terekben (poszter) (with E. Molnár)
42. XX.
Geometrical Seminar, May 20-23. 2018,
Vrnjačka Banja, Serbia.
On compact
non-Euclidean polyhedral manifolds-theory applications and visualization,
(invited talk)
1. Pflasterungen
im hyperbolischen Raum,
1995, Potsdamer
Universität, Institut für Mathematik
1996, BME,
Geometria Tanszék szemináriuma,
3. Schoenflies-Bieberbach tétele,
1997, BME,
Geometria Tanszék szemináriuma,
4. Algoritmus
a kockarendszerhez tartozó gömbkitöktések meghatározására,
2001 MTA Rényi Intézet , Geometria Szeminárium,
6. Coxeter kövezésekhez tartozó gömb- és
horoszférakitöltések,
2005, BME,
Geometria Tanszék szemináriuma,
7. Diszkrét
geometriai problémák a Nil térben,
2006, BME,
Geometria Tanszék szemináriuma,
8. Über
die Nil-Geometrie, (invited talk)
2007, TU. Wien, Institut für
Diskrete Mathematik
9. A legsűrűbb rácsszerű gömbelhelyezés meghatározása Nil geometriában,
2007. MTA
Rényi Intézet , Geometria Szeminárium,
10.
Lattice-like ball packings in Nil and Sol spaces, (invited talk)
2008, Department of Mathematics Faculty of Mathematics
and Physics University of Ljubljana
11. Az Alhambrától a kristályok szerkezetéig avagy "kezdetben volt a
szimmetria" (invited talk)
Kömal Ankét, 2008
november 15.
12. On ball packings in Sol geometry, (invited talk)
2009, TU. Wien, Institut für Diskrete Mathematik.
13. Nemeuklideszi
geometriák vizualizációja,
2009, BME, Geometria Tanszék szemináriuma,
14. Az S²xR
és H²xR terek Coxeter csoportjaihoz tartozó optimális gömbkitöltések,
2010, BME, Geometria Tanszék szemináriuma,
15. A
hiperbolikus tér teljesen aszimptotikus Coxeter kövezéseinek horoszférakitöltéseiről,
2010, BME, Geometria Tanszék szemináriuma,
16. Nevezetes kövezések speciális horoszférakitöltései a hiperbolikus térben,
2010, ELTE, Hajos szeminárium,
17. Neue optimale Paraspärenpackungen im hyperbolischen
Raum, (invited talk)
2010, TU. Wien, Institut für Diskrete Mathematik
18. Gömbkitöltések
Thurston geometriákban,
2011, BME, Geometria Tanszék szemináriuma,
19.
Horoszférakitöltések az n-dimenziós teljesen aszimptotikus
2011, BME, Geometria Tanszék szemináriuma,
20.
Hasábok és hasábkitöltések az SL(2,R) térben,
2012, BME, Geometria Tanszék szemináriuma,
21. Szabályos hasábkövezésekhez tartozó gömbkitöltések
SL(2,R) geometriában,
2012, BME, Geometria Tanszék szemináriuma,
2013, BME, Geometria Tanszék szemináriuma,
23. Densest geodesic ball packings by some ~SL2R space groups (with
E. Molnár),
2013, BME, Geometria Tanszék szemináriuma,
2013, BME, Geometria Tanszék szemináriuma,
25. Geodesic
and translation ball packings in Thurston geometries , (invited talk)
2013, Oberseminar Geometrie - Université
de Fribourg, Suisse
26. Gömbök, Dirichlet-Voronoi cellák nem-euklideszi geometriákban, (invited talk)
27. Hiperszféra elhelyezések a 3-dimenziós hiperbolikus térben,
2014, BME,
Geometria Tanszék szemináriuma,
28.
Horoszférakitöltések a hiperbolikus 24 cellához kapcsolódóan,
2015, BME,
Geometria Tanszék szemináriuma
2015, BME,
Geometria Tanszék szemináriuma
30. Az SL(2,R)
tér transzlációs és geodetikus háromszögeiről (with G. Csima),
2016, BME,
Geometria Tanszék szemináriuma
31. Rekord sűrűségű gömb-kitöltések és -fedések a hiperbolikus
térben (with E. Molnár),
2016, BME,
Geometria Tanszék szemináriuma
32. Simson-Wallace -féle mértani hely d-dimenziós
projektív-metrikus térben (with
E. Molnár)
2016, BME,
Geometria Tanszék szemináriuma
33. Hiperbolikus
pókháló-sokaságok (with E. Molnár)
2017, BME,
Geometria Tanszék szemináriuma
2017, BME,
Geometria Tanszék szemináriuma
35.
Gömbelhelyezések és fedések általánosított gömbökkel az n-dimenziós
hiperbolikus térben