TY - JOUR AU - Dujella, Andrej AU - Győry, Kálmán AU - P, Michaud-Jacobs AU - Pintér, Ákos TI - On power values of pyramidal numbers, II JF - ACTA ARITHMETICA J2 - ACTA ARITH VL - 208 PY - 2023 IS - 3 SP - 199 EP - 213 PG - 15 SN - 0065-1036 DO - 10.4064/aa211213-27-7 UR - https://m2.mtmt.hu/api/publication/34123940 ID - 34123940 LA - English DB - MTMT ER - TY - JOUR AU - Burai, Pál József AU - Kiss, Gergely AU - Szokol, Patrícia Ágnes TI - Characterization of quasi-arithmetic means without regularity condition JF - ACTA MATHEMATICA HUNGARICA J2 - ACTA MATH HUNG VL - 165 PY - 2021 IS - 2 SP - 474 EP - 485 PG - 12 SN - 0236-5294 DO - 10.1007/s10474-021-01185-z UR - https://m2.mtmt.hu/api/publication/32576824 ID - 32576824 N1 - Export Date: 29 April 2022 Correspondence Address: Burai, P.; Budapest University of Technology and Economics, Egry József u. 1, Hungary; email: buraip@math.bme.hu AB - We show that bisymmetry, which is an algebraic property, hasa regularity improving feature. More precisely, we prove that every bisymmetric,partially strictly monotonic, reflexive and symmetric function F: I2→ I is continuous.As a consequence, we obtain a finer characterization of quasi-arithmeticmeans than the classical results of Aczél [1], Kolmogoroff [18], Nagumo [20] andde Finetti [11]. © 2021, Akadémiai Kiadó, Budapest, Hungary. LA - English DB - MTMT ER - TY - THES AU - Rácz, Gabriella TI - Általánosított Lah-számok és néhány kapcsolódó kombinatorikus számsorozat PB - Debreceni Egyetem Természettudományi Kar PY - 2021 SP - 95 UR - https://m2.mtmt.hu/api/publication/32049121 ID - 32049121 LA - English DB - MTMT ER - TY - JOUR AU - Kiss, Tibor TI - On the balancing property of Matkowski means JF - AEQUATIONES MATHEMATICAE J2 - AEQUATIONES MATH VL - 95 PY - 2021 IS - 1 SP - 75 EP - 89 PG - 15 SN - 0001-9054 DO - 10.1007/s00010-020-00758-7 UR - https://m2.mtmt.hu/api/publication/32003595 ID - 32003595 LA - English DB - MTMT ER - TY - JOUR AU - Adédji, Kouèssi Norbert AU - He, Bo AU - Pintér, Ákos AU - Togbé, Alain TI - On the Diophantine Pair {a,3a} JF - JOURNAL OF NUMBER THEORY J2 - J NUMBER THEORY VL - 227 PY - 2021 SP - 330 EP - 351 PG - 22 SN - 0022-314X DO - 10.1016/j.jnt.2021.03.011 UR - https://m2.mtmt.hu/api/publication/31982145 ID - 31982145 LA - English DB - MTMT ER - TY - JOUR AU - Gyimesi, Eszter TI - The r-Dowling-Lah polynomials JF - MEDITERRANEAN JOURNAL OF MATHEMATICS J2 - MEDITERR J MATH VL - 18 PY - 2021 IS - 4 PG - 16 SN - 1660-5446 DO - 10.1007/s00009-020-01669-2 UR - https://m2.mtmt.hu/api/publication/31682399 ID - 31682399 LA - English DB - MTMT ER - TY - JOUR AU - Gyimesi, Eszter AU - Nyul, Gábor TI - Associated r-Dowling numbers and some relatives JF - COMPTES RENDUS MATHEMATIQUE J2 - CR MATH VL - 359 PY - 2021 IS - 1 SP - 47 EP - 55 PG - 9 SN - 1631-073X DO - 10.5802/crmath.145 UR - https://m2.mtmt.hu/api/publication/31650918 ID - 31650918 LA - English DB - MTMT ER - TY - JOUR AU - Nyul, Gábor AU - Rácz, Gabriella TI - Matchings in complete bipartite graphs and the r-Lah numbers JF - CZECHOSLOVAK MATHEMATICAL JOURNAL J2 - CZECH MATH J VL - 71 PY - 2021 IS - 4 SP - 947 EP - 959 PG - 13 SN - 0011-4642 DO - 10.21136/CMJ.2021.0148-20 UR - https://m2.mtmt.hu/api/publication/31612547 ID - 31612547 AB - We give a graph theoretic interpretation of r-Lah numbers, namely, we show that the r -Lah number left perpendicular(k)(n)right perpendicular(r) counting the number of r-partitions of an (n + r)-element set into k + r ordered blocks is just equal to the number of matchings consisting of n - k edges in the complete bipartite graph with partite sets of cardinality n and n + 2r - 1 (0 <= k <= n, r >= 1). We present five independent proofs including a direct, bijective one. Finally, we close our work with a similar result for r-Stirling numbers of the second kind. LA - English DB - MTMT ER - TY - JOUR AU - Burai, Pál József AU - Makó, Judit AU - Szokol, Patrícia Ágnes TI - HERMITE-HADAMARD TYPE INEQUALITY FOR CERTAIN SCHUR CONVEX FUNCTIONS JF - MATHEMATICAL INEQUALITIES & APPLICATIONS J2 - MATH INEQUAL APPL VL - 23 PY - 2020 IS - 4 SP - 1441 EP - 1458 PG - 18 SN - 1331-4343 DO - 10.7153/mia-2020-23-103 UR - https://m2.mtmt.hu/api/publication/31729837 ID - 31729837 AB - The main goal of this paper is to prove a Hermite-Hadamard type inequality for certain Schur convex functions using, as one of the main tools in the proof, a Korovkin-type approximation theorem. LA - English DB - MTMT ER - TY - JOUR AU - Bazsó, András TI - On linear combinations of products of consecutive integers JF - ACTA MATHEMATICA HUNGARICA J2 - ACTA MATH HUNG VL - 162 PY - 2020 IS - 2 SP - 690 EP - 704 PG - 15 SN - 0236-5294 DO - 10.1007/s10474-020-01083-w UR - https://m2.mtmt.hu/api/publication/31641686 ID - 31641686 LA - English DB - MTMT ER -