Scientific talks
[1] Power integral bases in biquadratic number fields, 15th Czech and Slovak International Conference on Number Theory, 3–8 September 2001, Ostravice (Czech Republic).
[2] Index form equations in biquadratic number fields (in Hungarian), Conference on Number Theory to the Memory of Péter Kiss, 22–23 November 2002, Eger.
[3] Index form equations in biquadratic and multiquadratic number fields, Workshop on Computational Number Therory, 20–24 October 2003, Debrecen.
[4] Divisibility of binomial coefficients (in Hungarian), Diophantine Day in Sopron, 9 October 2004, Sopron.
[5] Power integral bases in composites of quadratic number fields (in Hungarian), Cryptography and Diophantine Day in Nyíregyháza, 30 April 2005, Nyíregyháza.
[6] The field index of some families of number fields, 17th Czech and Slovak International Conference on Number Theory, 5–10 September 2005, Malenovice (Czech Republic).
[7] Field index of algebraic number fields (in Hungarian), Diophantine and Cryptography Days in Berekfürdő, 22 April 2006, Berekfürdő.
[8] A divisibility problem of binomial coefficients, 18th Czech and Slovak International Conference on Number Theory, 27–31 August 2007, Smolenice (Slovakia).
[9] The solution of a divisibility problem related to binomial coefficients (in Hungarian), Number Theory and Cryptography Days in Eger, 6 October 2007, Eger.
[10] Ordered r-Bell numbers and r-Eulerian numbers (in Hungarian), Diophantine and Cryptography Days in Sopron, 11 October 2008, Sopron.
[11] Field index of algebraic number fields, 19th Czech and Slovak International Conference on Number Theory, 31 August – 4 September 2009, Hradec nad Moravicí (Czech Republic).
[12] Van der Waerden type numbers for linear recurrence sequences, Number Theory and Its Applications, International Conference Dedicated to Kálmán Győry, Attila Pethő, János Pintz and András Sárközy, 4–8 October 2010, Debrecen.
[13] Van der Waerden type numbers for linear recurrence sequences, Paul Turán Memorial Conference, 22–26 August 2011, Budapest.
[14] Monogeneous dihedral quartic extensions of quadratic fields, 20th Czech and Slovak International Conference on Number Theory, 5–9 September 2011, Stará Lesná (Slovakia).
[15] Stirling numbers of the second kind and Bell numbers for graphs, 15th International Conference on Fibonacci Numbers and Their Applications, 25–30 June 2012, Eger.
[16] The r-generalization of combinatorial numbers, Seventh Czech-Slovak International Symposium on Graph Theory, Combinatorics, Algorithms and Applications, 7–13 July 2013, Košice (Slovakia).
[17] Recent results on field indices, 21st Czech and Slovak International Conference on Number Theory, 2–6 September 2013, Ostravice (Czech Republic).
[18] The r-generalization of combinatorial numbers, 32. Kolloquium über Kombinatorik, 8–9 November 2013, Ilmenau (Germany).
[19] Generalization of combinatorial numbers for graphs (in Hungarian), Number Theory and Cryptography Days in Komárno, 24 May 2014, Komárno (Slovakia).
[20] Generalization of combinatorial numbers for graphs, 5th Polish Combinatorial Conference, 22–26 September 2014, Będlewo (Poland).
[21] Stirling, Bell and Fubini numbers for graphs, 33. Kolloquium über Kombinatorik, 7–8 November 2014, Ilmenau (Germany).
[22] Generalization of enumeration polynomials for graphs, 8th Slovenian Conference on Graph Theory, 21–27 June 2015, Kranjska Gora (Slovenia).
[23] Monochromatic linear recurrence sequences, 29th Journées Arithmétiques, 6–10 July 2015, Debrecen.
[24] A Ramsey type problem for linear recurrence sequences, 22nd Czech and Slovak International Conference on Number Theory, 31 August – 4 September 2015, Liptovský Ján (Slovakia).
[25] Recent results on generalizations of Bell numbers, 17th International Conference on Fibonacci Numbers and Their Applications, 27 June – 2 July 2016, Caen (France).
[26] New combinatorial interpretations of some variants of Stirling and Bell numbers, Veszprém Discrete Mathematics and Applications Conference, 25–29 June 2018, Veszprém.
[27] Various generalizations of Bell numbers, 9th Slovenian International Conference on Graph Theory, 23–29 June 2019, Bled (Slovenia).
[28] Generalizations of Bell numbers and factorials, 24th Central European Number Theory Conference, 1–6 September 2019, Komárno (Slovakia).
[29] Variations on a theme: generalizations of Bell numbers, One Belt One Road Conference Series on Number Theory and Combinatorics – I, 20–21 April 2021, Nanjing (China, online).
[30] Enumerative combinatorial numbers and polynomials in graph theory, Number Theory Conference in honour of Professors Kálmán Győry, János Pintz and András Sárközy, 4–8 July 2022, Debrecen.
[31] Recent results on the minimal index of pure quartic fields, Seventh Meeting on Monogenity and Power Integral Bases, 16 March 2023, Debrecen (online).
[32] Monogeneity and the minimal index of pure quartic fields, 25th Central European Number Theory Conference, 28 August - 1 September 2023, Sopron.