Fechner, Żywilla; Gselmann, Eszter; Székelyhidi, László Moment functions of higher rank on some types of hypergroups. (English) Zbl 07785781 Semigroup Forum 107, No. 3, 624-636 (2023). MSC: 43A62 44A60 39B52 PDFBibTeX XMLCite \textit{Ż. Fechner} et al., Semigroup Forum 107, No. 3, 624--636 (2023; Zbl 07785781) Full Text: DOI OA License
Székelyhidi, L. A generalization of the Heisenberg group. (English) Zbl 07780488 J. Iran. Math. Soc. 4, No. 2, 105-119 (2023). MSC: 22E30 22E25 PDFBibTeX XMLCite \textit{L. Székelyhidi}, J. Iran. Math. Soc. 4, No. 2, 105--119 (2023; Zbl 07780488) Full Text: DOI
Fechner, Żywilla; Gselmann, Eszter; Székelyhidi, László Endomorphisms and derivations of the measure algebra of commutative hypergroups. (English) Zbl 1530.43003 Indag. Math., New Ser. 34, No. 6, 1329-1337 (2023). Reviewer: Norbert Youmbi (Loretto) MSC: 43A62 39B52 44A60 PDFBibTeX XMLCite \textit{Ż. Fechner} et al., Indag. Math., New Ser. 34, No. 6, 1329--1337 (2023; Zbl 1530.43003) Full Text: DOI arXiv OA License
Fechner, Żywilla; Gselmann, Eszter; Székelyhidi, László Generalized derivations and generalized exponential monomials on hypergroups. (English) Zbl 1533.43008 Opusc. Math. 43, No. 4, 493-505 (2023). MSC: 43A62 43A45 43A70 PDFBibTeX XMLCite \textit{Ż. Fechner} et al., Opusc. Math. 43, No. 4, 493--505 (2023; Zbl 1533.43008) Full Text: DOI arXiv
Székelyhidi, László Finite dimensional varieties over the Heisenberg group. (English) Zbl 1519.43003 Aequationes Math. 97, No. 2, 377-390 (2023). MSC: 43A45 22E25 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Aequationes Math. 97, No. 2, 377--390 (2023; Zbl 1519.43003) Full Text: DOI OA License
Székelyhidi, László The Principal Ideal Theorem in Spectral Synthesis. arXiv:2310.19026 Preprint, arXiv:2310.19026 [math.FA] (2023). MSC: 43A45 22D99 BibTeX Cite \textit{L. Székelyhidi}, ``The Principal Ideal Theorem in Spectral Synthesis'', Preprint, arXiv:2310.19026 [math.FA] (2023) Full Text: arXiv OA License
Székelyhidi, László Characterisation of Locally Compact Abelian Groups Having Spectral Synthesis. arXiv:2310.19020 Preprint, arXiv:2310.19020 [math.FA] (2023). MSC: 43A45 22D99 BibTeX Cite \textit{L. Székelyhidi}, ``Characterisation of Locally Compact Abelian Groups Having Spectral Synthesis'', Preprint, arXiv:2310.19020 [math.FA] (2023) Full Text: arXiv OA License
Székelyhidi, László Spectral Synthesis on Varieties. arXiv:2306.17438 Preprint, arXiv:2306.17438 [math.FA] (2023). MSC: 43A45 43A25 13N15 BibTeX Cite \textit{L. Székelyhidi}, ``Spectral Synthesis on Varieties'', Preprint, arXiv:2306.17438 [math.FA] (2023) Full Text: arXiv OA License
Fechner, Żywilla; Gselmann, Eszter; Székelyhidi, László Spectral synthesis via moment functions on hypergroups. (English) Zbl 1510.43003 Forum Math. 34, No. 5, 1187-1197 (2022). Reviewer: Norbert Youmbi (Loretto) MSC: 43A62 43A45 PDFBibTeX XMLCite \textit{Ż. Fechner} et al., Forum Math. 34, No. 5, 1187--1197 (2022; Zbl 1510.43003) Full Text: DOI arXiv OA License
Fechner, Żywilla; Gselmann, Eszter; Székelyhidi, László Moment functions of higher rank on polynomial hypergroups. (English) Zbl 1508.43006 Adv. Oper. Theory 7, No. 3, Paper No. 41, 9 p. (2022). Reviewer: Norbert Youmbi (Loretto) MSC: 43A62 43A45 44A60 PDFBibTeX XMLCite \textit{Ż. Fechner} et al., Adv. Oper. Theory 7, No. 3, Paper No. 41, 9 p. (2022; Zbl 1508.43006) Full Text: DOI arXiv
Fechner, Żywilla; Gselmann, Eszter; Székelyhidi, László Moment functions and exponential monomials on commutative hypergroups. (English) Zbl 1489.39034 Aequationes Math. 95, No. 6, 1281-1290 (2021). Reviewer: Nasrin Eghbali (Ardabil) MSC: 39B52 39B72 43A45 43A70 PDFBibTeX XMLCite \textit{Ż. Fechner} et al., Aequationes Math. 95, No. 6, 1281--1290 (2021; Zbl 1489.39034) Full Text: DOI arXiv OA License
Székelyhidi, L. Spherical spectral synthesis on hypergroups. (English) Zbl 1488.43006 Acta Math. Hung. 163, No. 1, 247-275 (2021). MSC: 43A62 43A45 43A90 20N20 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Acta Math. Hung. 163, No. 1, 247--275 (2021; Zbl 1488.43006) Full Text: DOI
Fechner, Żywilla; Gselmann, Eszter; Székelyhidi, László Moment functions on groups. (English) Zbl 1510.44009 Result. Math. 76, No. 4, Paper No. 171, 16 p. (2021). MSC: 44A60 43A45 43A70 39B52 39B72 PDFBibTeX XMLCite \textit{Ż. Fechner} et al., Result. Math. 76, No. 4, Paper No. 171, 16 p. (2021; Zbl 1510.44009) Full Text: DOI arXiv OA License
Székelyhidi, László; Tabatabaie, Seyyed Mohammad; Vati, Kedumetse Strictly and strongly positive definite functions on locally compact hypergroups. (English) Zbl 1485.43004 Result. Math. 76, No. 3, Paper No. 156, 12 p. (2021). Reviewer: Massoud Amini (Tehran) MSC: 43A62 43A35 43A25 PDFBibTeX XMLCite \textit{L. Székelyhidi} et al., Result. Math. 76, No. 3, Paper No. 156, 12 p. (2021; Zbl 1485.43004) Full Text: DOI
Székelyhidi, László; Fechner, Żywilla Finite dimensional varieties on hypergroups. (English) Zbl 1473.43005 Aequationes Math. 95, No. 3, 551-567 (2021). MSC: 43A62 20N20 14M99 43A85 PDFBibTeX XMLCite \textit{L. Székelyhidi} and \textit{Ż. Fechner}, Aequationes Math. 95, No. 3, 551--567 (2021; Zbl 1473.43005) Full Text: DOI OA License
Gselmann, Eszter; Székelyhidi, László Symmetric spectral synthesis. (English) Zbl 1470.43008 Aequationes Math. 95, No. 2, 255-279 (2021). MSC: 43A45 22D15 43A90 PDFBibTeX XMLCite \textit{E. Gselmann} and \textit{L. Székelyhidi}, Aequationes Math. 95, No. 2, 255--279 (2021; Zbl 1470.43008) Full Text: DOI OA License
Fechner, Zywilla; Székelyhidi, László Remarks on infinite hypergroup joins. (English) Zbl 1474.20165 Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Comput. 51, 89-95 (2020). MSC: 20N20 39B99 PDFBibTeX XMLCite \textit{Z. Fechner} and \textit{L. Székelyhidi}, Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Comput. 51, 89--95 (2020; Zbl 1474.20165) Full Text: Link
Vati, Kedumetse; Székelyhidi, László Exponential monomials on hypergroup joins. (English) Zbl 1463.20106 Miskolc Math. Notes 21, No. 1, 463-472 (2020). MSC: 20N20 39B52 PDFBibTeX XMLCite \textit{K. Vati} and \textit{L. Székelyhidi}, Miskolc Math. Notes 21, No. 1, 463--472 (2020; Zbl 1463.20106) Full Text: DOI
Székelyhidi, L. Spectral synthesis and partial differential equations. (English) Zbl 1463.43005 Acta Math. Hung. 161, No. 1, 31-47 (2020). Reviewer: Martin Blümlinger (Wien) MSC: 43A45 43A90 22F30 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Acta Math. Hung. 161, No. 1, 31--47 (2020; Zbl 1463.43005) Full Text: DOI
Székelyhidi, László Invariant means in stability theory. (English) Zbl 1441.39031 Brzdęk, Janusz (ed.) et al., Ulam type stability. Based on the conferences on Ulam type stability (CUTS), Cluj-Napoca, Romania, July 4–9, 2016 and Timisoara, Romania, October 8–13, 2018. Cham: Springer. 409-451 (2019). MSC: 39B82 39B52 39-02 43A07 PDFBibTeX XMLCite \textit{L. Székelyhidi}, in: Ulam type stability. Based on the conferences on Ulam type stability (CUTS), Cluj-Napoca, Romania, July 4--9, 2016 and Timisoara, Romania, October 8--13, 2018. Cham: Springer. 409--451 (2019; Zbl 1441.39031) Full Text: DOI
Fechner, Zywilla; Székelyhidi, László Functional equations on an infinite hypergroup join. (English) Zbl 1438.20079 Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Comput. 49, 179-185 (2019). Reviewer: Eszter Gselmann (Debrecen) MSC: 20N20 39B99 PDFBibTeX XMLCite \textit{Z. Fechner} and \textit{L. Székelyhidi}, Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Comput. 49, 179--185 (2019; Zbl 1438.20079) Full Text: Link
Székelyhidi, László; Tabatabaie, Seyyed Mohammad Invariant subspaces on KPC-hypergroups. (English) Zbl 1423.43009 J. Math. Phys. Anal. Geom. 15, No. 1, 122-130 (2019). MSC: 43A62 43A45 39A70 PDFBibTeX XMLCite \textit{L. Székelyhidi} and \textit{S. M. Tabatabaie}, J. Math. Phys. Anal. Geom. 15, No. 1, 122--130 (2019; Zbl 1423.43009) Full Text: DOI
Székelyhidi, L. Spectral synthesis on the affine group of SU\((n)\). (English) Zbl 1463.43004 Acta Math. Hung. 158, No. 2, 352-362 (2019). Reviewer: Daniel Beltiţă (Bucureşti) MSC: 43A45 43A90 22D15 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Acta Math. Hung. 158, No. 2, 352--362 (2019; Zbl 1463.43004) Full Text: DOI
Vati, Kedumetse; Székelyhidi, László Moment functions on hypergroup joins. (English) Zbl 1432.20047 Adv. Pure Appl. Math. 10, No. 3, 215-220 (2019). MSC: 20N20 39B99 PDFBibTeX XMLCite \textit{K. Vati} and \textit{L. Székelyhidi}, Adv. Pure Appl. Math. 10, No. 3, 215--220 (2019; Zbl 1432.20047) Full Text: DOI
Székelyhidi, László Functional equations on affine groups. (English) Zbl 1422.39059 Ruzhansky, Michael (ed.) et al., Advanced topics in mathematical analysis. Boca Raton, FL: CRC Press. 71-94 (2019). Reviewer: Maryam Amyari (Mashhad) MSC: 39B52 28C10 22E45 PDFBibTeX XMLCite \textit{L. Székelyhidi}, in: Advanced topics in mathematical analysis. Boca Raton, FL: CRC Press. 71--94 (2019; Zbl 1422.39059)
Fechner, Żywilla; Székelyhidi, László Functional equations for exponential polynomials. (English) Zbl 1416.39016 Aequationes Math. 93, No. 3, 535-545 (2019). Reviewer: Jacek Chmieliński (Kraków) MSC: 39B52 43A62 20N20 PDFBibTeX XMLCite \textit{Ż. Fechner} and \textit{L. Székelyhidi}, Aequationes Math. 93, No. 3, 535--545 (2019; Zbl 1416.39016) Full Text: DOI Link OA License
Fechner, Z.; Székelyhidi, L. Spherical and moment functions on the affine group of \(\mathrm{SU}(n)\). (English) Zbl 1438.20078 Acta Math. Hung. 157, No. 1, 10-26 (2019). Reviewer: C. Pereira da Silva (Curitiba) MSC: 20N20 43A62 PDFBibTeX XMLCite \textit{Z. Fechner} and \textit{L. Székelyhidi}, Acta Math. Hung. 157, No. 1, 10--26 (2019; Zbl 1438.20078) Full Text: DOI
Fechner, Żywilla; Székelyhidi, László Moment functions on affine groups. (English) Zbl 1472.43010 Result. Math. 74, No. 1, Paper No. 5, 13 p. (2019). MSC: 43A62 20N20 39B52 PDFBibTeX XMLCite \textit{Ż. Fechner} and \textit{L. Székelyhidi}, Result. Math. 74, No. 1, Paper No. 5, 13 p. (2019; Zbl 1472.43010) Full Text: DOI OA License
Székelyhidi, László Spherical monomials on affine groups. (English) Zbl 1424.43004 Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Comput. 48, 209-223 (2018). MSC: 43A45 43A90 22D15 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Comput. 48, 209--223 (2018; Zbl 1424.43004)
Székelyhidi, László Spectral synthesis and Euclidean motions. (English) Zbl 1424.43005 Math. Pannonica 26, No. 1, 33-46 (2017-2018). MSC: 43A45 43A90 22D15 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Math. Pannonica 26, No. 1, 33--46 (2017; Zbl 1424.43005)
Székelyhidi, László Functional equations and stability problems on hypergroups. (English) Zbl 1387.39031 Brzdęk, Janusz (ed.) et al., Developments in functional equations and related topics. Selected papers based on the presentations at the 16th international conference on functional equations and inequalities, ICFEI, Będlewo, Poland, May 17–23, 2015. Cham: Springer (ISBN 978-3-319-61731-2/hbk; 978-3-319-61732-9/ebook). Springer Optimization and Its Applications 124, 305-331 (2017). MSC: 39B82 39B52 20N20 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Springer Optim. Appl. 124, 305--331 (2017; Zbl 1387.39031) Full Text: DOI
Fechner, Żywilla; Székelyhidi, László Sine and cosine equations on hypergroups. (English) Zbl 1382.43010 Banach J. Math. Anal. 11, No. 4, 808-824 (2017). MSC: 43A62 20N20 39B32 PDFBibTeX XMLCite \textit{Ż. Fechner} and \textit{L. Székelyhidi}, Banach J. Math. Anal. 11, No. 4, 808--824 (2017; Zbl 1382.43010) Full Text: DOI Euclid
Székelyhidi, László Invariant means on double coset spaces. (English) Zbl 1399.43021 Period. Math. Hung. 75, No. 1, 58-65 (2017). Reviewer: Jacques Faraut (Paris) MSC: 43A85 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Period. Math. Hung. 75, No. 1, 58--65 (2017; Zbl 1399.43021) Full Text: DOI
Székelyhidi, L. Spherical spectral synthesis. (English) Zbl 1399.43012 Acta Math. Hung. 153, No. 1, 120-142 (2017). MSC: 43A45 43A90 22D15 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Acta Math. Hung. 153, No. 1, 120--142 (2017; Zbl 1399.43012) Full Text: DOI arXiv
Fechner, Żywilla; Székelyhidi, László Functional equations on double coset hypergroups. (English) Zbl 1369.43003 Ann. Funct. Anal. 8, No. 3, 411-423 (2017). MSC: 43A62 39B99 20N20 PDFBibTeX XMLCite \textit{Ż. Fechner} and \textit{L. Székelyhidi}, Ann. Funct. Anal. 8, No. 3, 411--423 (2017; Zbl 1369.43003) Full Text: DOI Euclid
Székelyhidi, László; Vati, Kedumetse Functional equations on hypergroup joins. (English) Zbl 1378.39012 Arch. Math. 109, No. 1, 41-47 (2017). Reviewer: Bijan Davvaz (Yazd) MSC: 39B52 20N20 43A62 PDFBibTeX XMLCite \textit{L. Székelyhidi} and \textit{K. Vati}, Arch. Math. 109, No. 1, 41--47 (2017; Zbl 1378.39012) Full Text: DOI
Székelyhidi, László Superstability of functional equations related to spherical functions. (English) Zbl 1362.39035 Open Math. 15, 427-432 (2017). MSC: 39B82 39B52 43A90 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Open Math. 15, 427--432 (2017; Zbl 1362.39035) Full Text: DOI OA License
Székelyhidi, László On spectral synthesis in several variables. (English) Zbl 1370.43002 Adv. Oper. Theory 2, No. 2, 179-191 (2017). MSC: 43A45 43A90 47B38 22D15 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Adv. Oper. Theory 2, No. 2, 179--191 (2017; Zbl 1370.43002) Full Text: DOI
Székelyhidi, L. On the Principal Ideal Theorem and spectral synthesis on discrete abelian groups. (English) Zbl 1389.43008 Acta Math. Hung. 150, No. 1, 228-233 (2016). Reviewer: Sergei S. Platonov (Petrozavodsk) MSC: 43A45 39A06 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Acta Math. Hung. 150, No. 1, 228--233 (2016; Zbl 1389.43008) Full Text: DOI
Fechner, Zywilla; Székelyhidi, László A generalization of Gajda’s equation on commutative topological groups. (English) Zbl 1374.39032 Publ. Math. Debr. 88, No. 1-2, 163-176 (2016). Reviewer: Gyula Maksa (Debrecen) MSC: 39B52 PDFBibTeX XMLCite \textit{Z. Fechner} and \textit{L. Székelyhidi}, Publ. Math. Debr. 88, No. 1--2, 163--176 (2016; Zbl 1374.39032) Full Text: DOI arXiv
Székelyhidi, László Ordinary and partial differential equations for the beginner. (English) Zbl 1358.34001 Hackensack, NJ: World Scientific (ISBN 978-981-4723-98-5/hbk; 978-981-4723-99-2/pbk). xiv, 238 p. (2016). Reviewer: Tihomir Gyulov (Ruse) MSC: 34-01 35-01 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Ordinary and partial differential equations for the beginner. Hackensack, NJ: World Scientific (2016; Zbl 1358.34001) Full Text: DOI
Székelyhidi, László Annihilator methods for spectral synthesis on locally compact abelian groups. (English) Zbl 1414.43007 Monatsh. Math. 180, No. 2, 357-371 (2016). Reviewer: Mehdi S. Monfared (Windsor) MSC: 43A45 22D15 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Monatsh. Math. 180, No. 2, 357--371 (2016; Zbl 1414.43007) Full Text: DOI
Almira, J. M.; Székelyhidi, L. Montel-type theorems for exponential polynomials. (English) Zbl 1344.43002 Demonstr. Math. 49, No. 2, 197-212 (2016). Reviewer: Stefan Balint (Timişoara) MSC: 43A45 39A70 39B52 PDFBibTeX XMLCite \textit{J. M. Almira} and \textit{L. Székelyhidi}, Demonstr. Math. 49, No. 2, 197--212 (2016; Zbl 1344.43002) Full Text: DOI arXiv OA License
Székelyhidi, László Erratum to: “Stability of functional equations on hypergroups”. (English) Zbl 1390.39106 Aequationes Math. 90, No. 2, 469-470 (2016). MSC: 39B82 39B52 20N20 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Aequationes Math. 90, No. 2, 469--470 (2016; Zbl 1390.39106) Full Text: DOI
Fechner, Żywilla; Székelyhidi, László Sine functions on hypergroups. (English) Zbl 1336.43008 Arch. Math. 106, No. 4, 371-382 (2016). Reviewer: Michael Voit (Dortmund) MSC: 43A62 39B99 PDFBibTeX XMLCite \textit{Ż. Fechner} and \textit{L. Székelyhidi}, Arch. Math. 106, No. 4, 371--382 (2016; Zbl 1336.43008) Full Text: DOI arXiv
Székelyhidi, László Remark on the graph of additive functions. (English) Zbl 1333.05170 Aequationes Math. 90, No. 1, 7-9 (2016). MSC: 05C40 39A06 22A10 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Aequationes Math. 90, No. 1, 7--9 (2016; Zbl 1333.05170) Full Text: DOI
Almira, J. M.; Székelyhidi, L. Characterization of classes of polynomial functions. (English) Zbl 1336.43006 Mediterr. J. Math. 13, No. 1, 301-307 (2016). Reviewer: Vladimir V. Peller (East Lansing) MSC: 43A45 39A70 PDFBibTeX XMLCite \textit{J. M. Almira} and \textit{L. Székelyhidi}, Mediterr. J. Math. 13, No. 1, 301--307 (2016; Zbl 1336.43006) Full Text: DOI arXiv
Almira, J. M.; Székelyhidi, L. Erratum to: “On the closure of translation-dilation invariant linear spaces of polynomials”. (English) Zbl 1383.41002 Result. Math. 69, No. 1-2, 273-274 (2016). MSC: 41A10 40A30 39A70 PDFBibTeX XMLCite \textit{J. M. Almira} and \textit{L. Székelyhidi}, Result. Math. 69, No. 1--2, 273--274 (2016; Zbl 1383.41002) Full Text: DOI
Almira, J. M.; Székelyhidi, L. On the closure of translation-dilation invariant linear spaces of polynomials. (English) Zbl 1332.41007 Result. Math. 69, No. 1-2, 263-272 (2016); erratum ibid. 69, No. 1-2, 273-274 (2016). MSC: 41A10 40A30 39A70 PDFBibTeX XMLCite \textit{J. M. Almira} and \textit{L. Székelyhidi}, Result. Math. 69, No. 1--2, 263--272 (2016; Zbl 1332.41007) Full Text: DOI arXiv
Székelyhidi, László Spectral synthesis on special varieties. (English) Zbl 1389.43009 Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Comput. 44, 29-36 (2015). MSC: 43A45 16P40 39A70 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Comput. 44, 29--36 (2015; Zbl 1389.43009)
Székelyhidi, László Stability of functional equations on hypergroups. (English) Zbl 1337.39010 Aequationes Math. 89, No. 6, 1475-1483 (2015); erratum ibid. 90, No. 2, 469-470 (2016). Reviewer: Maryam Amyari (Mashhad) MSC: 39B82 39B52 20N20 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Aequationes Math. 89, No. 6, 1475--1483 (2015; Zbl 1337.39010) Full Text: DOI
Székelyhidi, László A functional equation for exponential polynomials. (English) Zbl 1323.39022 Aequationes Math. 89, No. 3, 821-828 (2015). Reviewer: Bilender P. Allahverdiev (Isparta) MSC: 39B52 12E10 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Aequationes Math. 89, No. 3, 821--828 (2015; Zbl 1323.39022) Full Text: DOI
Almira, Jose Maria; Székelyhidi, László Local polynomials and the Montel theorem. (English) Zbl 1321.43007 Aequationes Math. 89, No. 2, 329-338 (2015). Reviewer: Bilender P. Allahverdiev (Isparta) MSC: 43A45 39A70 39B52 PDFBibTeX XMLCite \textit{J. M. Almira} and \textit{L. Székelyhidi}, Aequationes Math. 89, No. 2, 329--338 (2015; Zbl 1321.43007) Full Text: DOI arXiv
Fechner, Żywilla; Székelyhidi, László Sine and cosine equations on commutative hypergroups. arXiv:1510.02905 Preprint, arXiv:1510.02905 [math.FA] (2015). MSC: 20N20 43A62 39B99 BibTeX Cite \textit{Ż. Fechner} and \textit{L. Székelyhidi}, ``Sine and cosine equations on commutative hypergroups'', Preprint, arXiv:1510.02905 [math.FA] (2015) Full Text: arXiv OA License
Székelyhidi, László On Fréchet’s functional equation. (English) Zbl 1308.39020 Monatsh. Math. 175, No. 4, 639-643 (2014). Reviewer: Jacek Chmieliński (Kraków) MSC: 39B52 39A70 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Monatsh. Math. 175, No. 4, 639--643 (2014; Zbl 1308.39020) Full Text: DOI
Székelyhidi, László Characterization of exponential polynomials on commutative hypergroups. (English) Zbl 1296.43002 Ann. Funct. Anal. 5, No. 2, 53-60 (2014). MSC: 43A62 39B99 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Ann. Funct. Anal. 5, No. 2, 53--60 (2014; Zbl 1296.43002) Full Text: DOI EMIS Link
Székelyhidi, L. Annihilator methods in discrete spectral synthesis. (English) Zbl 1324.43004 Acta Math. Hung. 143, No. 2, 351-366 (2014). Reviewer: Thomas Sonar (Braunschweig) MSC: 43A45 16P40 39A70 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Acta Math. Hung. 143, No. 2, 351--366 (2014; Zbl 1324.43004) Full Text: DOI
Székelyhidi, László Harmonic and spectral analysis. (English) Zbl 1297.43001 Hackensack, NJ: World Scientific (ISBN 978-981-4531-71-9/hbk; 978-981-4531-73-3/ebook). xii, 230 p. (2014). Reviewer: Sergei S. Platonov (Petrozavodsk) MSC: 43-02 43A40 43A45 22B05 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Harmonic and spectral analysis. Hackensack, NJ: World Scientific (2014; Zbl 1297.43001) Full Text: DOI
Székelyhidi, László A characterization of exponential polynomials. (English) Zbl 1299.43008 Publ. Math. Debr. 83, No. 4, 757-771 (2013). Reviewer: Sergei S. Platonov (Petrozavodsk) MSC: 43A45 43A65 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Publ. Math. Debr. 83, No. 4, 757--771 (2013; Zbl 1299.43008) Full Text: DOI
Székelyhidi, László; Vajday, László On conditional functional equations with applications on hypergroups. (English) Zbl 1289.39050 Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Comput. 41, 323-332 (2013). MSC: 39B55 43A62 PDFBibTeX XMLCite \textit{L. Székelyhidi} and \textit{L. Vajday}, Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Comput. 41, 323--332 (2013; Zbl 1289.39050) Full Text: Link
Székelyhidi, László Exponential polynomials on commutative hypergroups. (English) Zbl 1281.43002 Arch. Math. 101, No. 4, 341-347 (2013). Reviewer: Kathryn Hare (Waterloo) MSC: 43A62 39B99 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Arch. Math. 101, No. 4, 341--347 (2013; Zbl 1281.43002) Full Text: DOI
Székelyhidi, László The Levi-Civita equation, vector modules and spectral synthesis. (English) Zbl 1281.39029 Brzdȩk, Janusz (ed.) et al., Recent developments in functional equations and inequalities. Selected topics. Based on the 14th international conference on functional equations and inequalities (ICFEI) dedicated to the memory of Marek Kuczma, Bȩdlewo, Poland, September 11–17, 2011. Warszawa: Polish Academy of Sciences, Institute of Mathematics (ISBN 978-83-86806-18-8/pbk). Banach Center Publications 99, 193-206 (2013). MSC: 39B52 43A45 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Banach Cent. Publ. 99, 193--206 (2013; Zbl 1281.39029) Full Text: DOI Link
Székelyhidi, László Spectral synthesis problems on hypergroups. (English) Zbl 1289.43008 Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Comput. 39, 439-447 (2013). MSC: 43A45 43A62 20N20 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Comput. 39, 439--447 (2013; Zbl 1289.43008)
Székelyhidi, László Functional equations on hypergroups. (English) Zbl 1270.39016 Hackensack, NJ: World Scientific (ISBN 978-981-4407-00-7/hbk; 978-981-4407-01-4/ebook). xvii, 191 p. (2013). Reviewer: Stefan Czerwik (Gliwice) MSC: 39B52 39-01 39B82 43A62 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Functional equations on hypergroups. Hackensack, NJ: World Scientific (2013; Zbl 1270.39016) Full Text: DOI
Székelyhidi, László; Vajday, László Functional equations on the \(SU(2)\)-hypergroup. (English) Zbl 1289.43007 Math. Pannonica 23, No. 2, 187-193 (2012). MSC: 43A22 PDFBibTeX XMLCite \textit{L. Székelyhidi} and \textit{L. Vajday}, Math. Pannonica 23, No. 2, 187--193 (2012; Zbl 1289.43007)
Székelyhidi, László Noetherian rings of polynomial functions on abelian groups. (English) Zbl 1273.43008 Aequationes Math. 84, No. 1-2, 41-50 (2012). Reviewer: Mehdi S. Monfared (Windsor) MSC: 43A45 39A70 16P40 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Aequationes Math. 84, No. 1--2, 41--50 (2012; Zbl 1273.43008) Full Text: DOI
Székelyhidi, László; Vajday, László A moment problem on some types of hypergroups. (English) Zbl 1255.43005 Ann. Funct. Anal. 3, No. 2, 58-65 (2012). Reviewer: Norbert Youmbi (Loretto) MSC: 43A62 20N20 30E05 44A60 PDFBibTeX XMLCite \textit{L. Székelyhidi} and \textit{L. Vajday}, Ann. Funct. Anal. 3, No. 2, 58--65 (2012; Zbl 1255.43005) Full Text: DOI EMIS
Székelyhidi, László Spectral analysis and spectral synthesis. (English) Zbl 1246.43003 Pardalos, Panos M. (ed.) et al., Nonlinear analysis. Stability, approximation, and inequalities. In honor of Themistocles M. Rassias on the occasion of his 60th birthday. New York, NY: Springer (ISBN 978-1-4614-3497-9/hbk; 978-1-4614-3498-6/ebook). Springer Optimization and Its Applications 68, 707-719 (2012). MSC: 43A45 43A60 43A65 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Springer Optim. Appl. 68, 707--719 (2012; Zbl 1246.43003) Full Text: DOI
Székelyhidi, László Polynomial functions and spectral synthesis on abelian groups. (English) Zbl 1244.43001 Banach J. Math. Anal. 6, No. 1, 124-131 (2012). MSC: 43A45 39A70 16P40 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Banach J. Math. Anal. 6, No. 1, 124--131 (2012; Zbl 1244.43001) Full Text: DOI Euclid EMIS
Székelyhidi, László Fourier transform for mean periodic functions. (English) Zbl 1240.42013 Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Comput. 35, 267-283 (2011). MSC: 42A16 42A38 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Comput. 35, 267--283 (2011; Zbl 1240.42013)
Boros, Nicholas; Székelyhidi, László; Volberg, Alexander WITHDRAWN: The \(L^p-\)Operator Norm of a Quadratic Perturbation of the Real Part of the Ahlfors–Beurling Operator. arXiv:1109.4058 Preprint, arXiv:1109.4058 [math.AP] (2011); retraction notice ibid. BibTeX Cite \textit{N. Boros} et al., ``WITHDRAWN: The $L^p-$Operator Norm of a Quadratic Perturbation of the Real Part of the Ahlfors--Beurling Operator'', Preprint, arXiv:1109.4058 [math.AP] (2011); retraction notice ibid. Full Text: arXiv OA License
Székelyhidi, László; Vajday, László Spectral analysis on commutative hypergroups. (English) Zbl 1213.43008 Aequationes Math. 80, No. 1-2, 223-226 (2010). Reviewer: Boris Rubin (Baton Rouge) MSC: 43A45 20N20 43A62 PDFBibTeX XMLCite \textit{L. Székelyhidi} and \textit{L. Vajday}, Aequationes Math. 80, No. 1--2, 223--226 (2010; Zbl 1213.43008) Full Text: DOI Link
Székelyhidi, László Spectral synthesis problems on locally compact groups. (English) Zbl 1202.43002 Monatsh. Math. 161, No. 2, 223-232 (2010). Reviewer: Long Wei (Jiangxi) MSC: 43A45 43A60 43A65 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Monatsh. Math. 161, No. 2, 223--232 (2010; Zbl 1202.43002) Full Text: DOI Link
Orosz, Á.; Székelyhidi, L. Moment functions on Sturm-Liouville hypergroups. (English) Zbl 1174.39008 Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Comput. 29, 141-156 (2008). Reviewer: Gyula Maksa (Debrecen) MSC: 39B52 39B42 20N20 PDFBibTeX XMLCite \textit{Á. Orosz} and \textit{L. Székelyhidi}, Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Comput. 29, 141--156 (2008; Zbl 1174.39008)
Székelyhidi, László D’Alembert’s functional equation on compact groups. (English) Zbl 1131.39028 Banach J. Math. Anal. 1, No. 2, 221-226 (2007). Reviewer: János Aczél (Waterloo/Ontario) MSC: 39B82 43A45 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Banach J. Math. Anal. 1, No. 2, 221--226 (2007; Zbl 1131.39028) Full Text: DOI EuDML EMIS
Laczkovich, M.; Székelyhidi, L. Spectral synthesis on discrete Abelian groups. (English) Zbl 1123.43002 Math. Proc. Camb. Philos. Soc. 143, No. 1, 103-120 (2007). Reviewer: Sergei Platonov (Petrozavodsk) MSC: 43A45 22B99 PDFBibTeX XMLCite \textit{M. Laczkovich} and \textit{L. Székelyhidi}, Math. Proc. Camb. Philos. Soc. 143, No. 1, 103--120 (2007; Zbl 1123.43002) Full Text: DOI
Székelyhidi, László Functional equations on Sturm-Liouville hypergroups. (English) Zbl 1121.39026 Math. Pannonica 17, No. 2, 169-182 (2006). MSC: 39B52 20N20 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Math. Pannonica 17, No. 2, 169--182 (2006; Zbl 1121.39026) Full Text: EuDML
Székelyhidi, László Superstability of moment functions on hypergroups. (English) Zbl 1122.39024 Nonlinear Funct. Anal. Appl. 11, No. 5, 815-821 (2006). Reviewer: Paşc Găvruţă (Timişoara) MSC: 39B82 20N20 39B52 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Nonlinear Funct. Anal. Appl. 11, No. 5, 815--821 (2006; Zbl 1122.39024)
Moslehian, Mohammad Sal; Székelyhidi, László Stability of ternary homomorphisms via generalized Jensen equation. (English) Zbl 1114.39010 Result. Math. 49, No. 3-4, 289-300 (2006). Reviewer: Szymon Wąsowicz (Bielsko-Biała) MSC: 39B82 39B52 46L05 PDFBibTeX XMLCite \textit{M. S. Moslehian} and \textit{L. Székelyhidi}, Result. Math. 49, No. 3--4, 289--300 (2006; Zbl 1114.39010) Full Text: DOI arXiv
Székelyhidi, László Discrete spectral synthesis and its applications. (English) Zbl 1122.43004 Springer Monographs in Mathematics. Berlin: Springer (ISBN 1-4020-4636-7/hbk; 1-4020-4637-5/ebook). xv, 117 p. (2006). Reviewer: Zbigniew Leśniak (Kraków) MSC: 43A45 39B52 39B32 39A10 43A62 42A38 43-02 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Discrete spectral synthesis and its applications. Berlin: Springer (2006; Zbl 1122.43004)
Székelyhidi, László Discrete spectral synthesis. (English) Zbl 1110.43006 Ann. Math. Inform. 32, 141-152 (2005). MSC: 43A45 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Ann. Math. Inform. 32, 141--152 (2005; Zbl 1110.43006) Full Text: EuDML
Orosz, Ágota; Székelyhidi, László Moment functions on polynomial hypergroups. (English) Zbl 1076.43004 Arch. Math. 85, No. 2, 141-150 (2005). Reviewer: Michael Voit (Dortmund) MSC: 43A62 60F99 PDFBibTeX XMLCite \textit{Á. Orosz} and \textit{L. Székelyhidi}, Arch. Math. 85, No. 2, 141--150 (2005; Zbl 1076.43004) Full Text: DOI
Székelyhidi, László Polynomial functions and spectral synthesis. (English) Zbl 1073.43003 Aequationes Math. 70, No. 1-2, 122-130 (2005). Reviewer: Lubomira Softova (Bari) MSC: 43A45 39B05 39B99 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Aequationes Math. 70, No. 1--2, 122--130 (2005; Zbl 1073.43003) Full Text: DOI
Székelyhidi, László Spectral synthesis and a characterization of polynomial ideals. (English) Zbl 1071.43002 Publ. Math. Debr. 66, No. 1-2, 183-195 (2005). Reviewer: F. J. Lobillo (Granada) MSC: 43A45 13P10 13F20 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Publ. Math. Debr. 66, No. 1--2, 183--195 (2005; Zbl 1071.43002)
Ebanks, Bruce; Székelyhidi, László On multiplicative and additive differences. (English) Zbl 1068.39038 Aequationes Math. 69, No. 1-2, 97-113 (2005). Reviewer: Claudi Alsina (Barcelona) MSC: 39B22 39B55 PDFBibTeX XMLCite \textit{B. Ebanks} and \textit{L. Székelyhidi}, Aequationes Math. 69, No. 1--2, 97--113 (2005; Zbl 1068.39038) Full Text: DOI
Páles, Zsolt; Székelyhidi, László On approximate sandwich and decomposition theorems. (English) Zbl 1108.39025 Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Comput. 23, 59-70 (2004). MSC: 39B52 PDFBibTeX XMLCite \textit{Z. Páles} and \textit{L. Székelyhidi}, Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Comput. 23, 59--70 (2004; Zbl 1108.39025)
Orosz, Ágota; Székelyhidi, László Moment functions on polynomial hypergroups in several variables. (English) Zbl 1064.43008 Publ. Math. Debr. 65, No. 3-4, 429-438 (2004). MSC: 43A62 60F99 PDFBibTeX XMLCite \textit{Á. Orosz} and \textit{L. Székelyhidi}, Publ. Math. Debr. 65, No. 3--4, 429--438 (2004; Zbl 1064.43008)
Chung, J. K.; Sahoo, Prasanna K.; Székelyhidi, László On quadratic differences that depend on the product of arguments – revisited. (English) Zbl 1058.39020 Aequationes Math. 67, No. 3, 216-224 (2004). Reviewer: Bogdan Choczewski (Kraków) MSC: 39B22 39B32 PDFBibTeX XMLCite \textit{J. K. Chung} et al., Aequationes Math. 67, No. 3, 216--224 (2004; Zbl 1058.39020) Full Text: DOI
Székelyhidi, László The failure of spectral synthesis on some types of discrete abelian groups. (English) Zbl 1051.43002 J. Math. Anal. Appl. 291, No. 2, 757-763 (2004). Reviewer: D. L. Salinger (Leeds) MSC: 43A45 PDFBibTeX XMLCite \textit{L. Székelyhidi}, J. Math. Anal. Appl. 291, No. 2, 757--763 (2004; Zbl 1051.43002) Full Text: DOI
Székelyhidi, László Functional equations on hypergroups. (English) Zbl 1059.39014 Rassias, Themistocles M. (ed.), Functional equations, inequalities and applications. Dordrecht: Kluwer Academic Publishers; (ISBN 1-4020-1578-X/hbk). 167-181 (2003). MSC: 39B52 39B82 20N20 PDFBibTeX XMLCite \textit{L. Székelyhidi}, in: Functional equations, inequalities and applications. Dordrecht: Kluwer Academic Publishers. 167--181 (2003; Zbl 1059.39014)
Sahoo, P. K.; Székelyhidi, L. On the general solution of a functional equation on \(\mathbb{Z}\oplus\mathbb{Z}\). (English) Zbl 1045.39017 Arch. Math. 81, No. 2, 233-239 (2003). Reviewer: János Aczél (Waterloo/Ontario) MSC: 39B32 11A25 11C08 39B52 68U10 PDFBibTeX XMLCite \textit{P. K. Sahoo} and \textit{L. Székelyhidi}, Arch. Math. 81, No. 2, 233--239 (2003; Zbl 1045.39017) Full Text: DOI
Székelyhidi, László On a paper of T. M. K. Davison. (English) Zbl 1213.39022 Ann. Acad. Paedagog. Crac. 13, Stud. Math. 2, 55-62 (2002). MSC: 39B05 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Ann. Acad. Paedagog. Crac., Stud. Math. 13(2), 55--62 (2002; Zbl 1213.39022)
Székelyhidi, László The octahedron and cube functional equations revisited. (English) Zbl 1026.39010 Publ. Math. Debr. 61, No. 3-4, 241-252 (2002). Reviewer: Ilie Corovei (Cluj Napoca) MSC: 39B52 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Publ. Math. Debr. 61, No. 3--4, 241--252 (2002; Zbl 1026.39010)
Sahoo, P. K.; Székelyhidi, L. A functional equation on \(\mathbb Z_n \oplus \mathbb Z_n\). (English) Zbl 1005.39023 Acta Math. Hung. 94, No. 1-2, 93-98 (2002). MSC: 39B52 PDFBibTeX XMLCite \textit{P. K. Sahoo} and \textit{L. Székelyhidi}, Acta Math. Hung. 94, No. 1--2, 93--98 (2002; Zbl 1005.39023) Full Text: DOI
Székelyhidi, László On discrete spectral synthesis. (English) Zbl 1017.43005 Daróczy, Zoltán (ed.) et al., Functional equations–results and advances. Dordrecht: Kluwer Academic Publishers. Adv. Math., Dordr. 3, 263-274 (2002). Reviewer: Zbigniew Leśniak (Kraków) MSC: 43A45 39B52 22A10 PDFBibTeX XMLCite \textit{L. Székelyhidi}, in: Functional equations---results and advances. Dordrecht: Kluwer Academic Publishers. 263--274 (2002; Zbl 1017.43005)
Székelyhidi, László A Wiener Tauberian theorem on discrete abelian torsion group. (English) Zbl 1137.43300 Ann. Acad. Paedagog. Crac. 4, Stud. Math. 1, 147-150 (2001). MSC: 43A45 20K10 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Ann. Acad. Paedagog. Crac., Stud. Math. 4(1), 147--150 (2001; Zbl 1137.43300)
Sahoo, Prasanna K.; Székelyhidi, László On a functional equation related to digital filtering. (English) Zbl 0992.39025 Aequationes Math. 62, No. 3, 280-285 (2001). Reviewer: Pl.Kannappan (Waterloo/Ontario) MSC: 39B52 39B32 PDFBibTeX XMLCite \textit{P. K. Sahoo} and \textit{L. Székelyhidi}, Aequationes Math. 62, No. 3, 280--285 (2001; Zbl 0992.39025) Full Text: DOI
Székelyhidi, László On the extension of exponential polynomials. (English) Zbl 0969.39016 Math. Bohem. 125, No. 3, 365-370 (2000). Reviewer: František Neuman (Brno) MSC: 39B05 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Math. Bohem. 125, No. 3, 365--370 (2000; Zbl 0969.39016) Full Text: DOI EuDML
Székelyhidi, László Ulam’s problem, Hyers’s solution – and to where they led. (English) Zbl 0976.39028 Rassias, Themistocles (ed.), Functional equations and inequalities. Dordrecht: Kluwer Academic Publishers. Math. Appl., Dordr. 518, 259-285 (2000). MSC: 39B82 39-02 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Math. Appl., Dordr. 518, 259--285 (2000; Zbl 0976.39028)
Székelyhidi, László On convolution type functional equations. (English) Zbl 0936.39011 Math. Pannonica 10, No. 2, 271-275 (1999). Reviewer: Gyula Maksa (Debrecen) MSC: 39B52 PDFBibTeX XMLCite \textit{L. Székelyhidi}, Math. Pannonica 10, No. 2, 271--275 (1999; Zbl 0936.39011) Full Text: EuDML