Kochanek, Tomasz Almost multiplicative maps with respect to almost associative operations on Banach algebras. (English) Zbl 07784714 Aequationes Math. 97, No. 5-6, 1231-1243 (2023). MSC: 39B82 39B52 47B48 46M18 43A07 PDFBibTeX XMLCite \textit{T. Kochanek}, Aequationes Math. 97, No. 5--6, 1231--1243 (2023; Zbl 07784714) Full Text: DOI arXiv OA License
Aserrar, Youssef; Elqorachi, Elhoucien A generalization of the cosine addition law on semigroups. (English) Zbl 1516.39015 Aequationes Math. 97, No. 4, 787-804 (2023). MSC: 39B52 39B32 PDFBibTeX XMLCite \textit{Y. Aserrar} and \textit{E. Elqorachi}, Aequationes Math. 97, No. 4, 787--804 (2023; Zbl 1516.39015) Full Text: DOI arXiv
Ebanks, Bruce Extensions of the sine addition law with an extra term. (English) Zbl 07679054 Aequationes Math. 97, No. 3, 597-618 (2023). MSC: 39B32 39B52 PDFBibTeX XMLCite \textit{B. Ebanks}, Aequationes Math. 97, No. 3, 597--618 (2023; Zbl 07679054) Full Text: DOI
Ebanks, Bruce Pexiderized d’Alembert functional equations on monoids. (English) Zbl 1516.39016 Aequationes Math. 96, No. 6, 1315-1338 (2022). Reviewer: Wolfgang Förg-Rob (Innsbruck) MSC: 39B52 PDFBibTeX XMLCite \textit{B. Ebanks}, Aequationes Math. 96, No. 6, 1315--1338 (2022; Zbl 1516.39016) Full Text: DOI
Nath, Prem; Singh, Dhiraj Kumar On the general solutions of three functional equations. (English) Zbl 1487.39030 Aequationes Math. 96, No. 2, 325-338 (2022). MSC: 39B22 39B52 PDFBibTeX XMLCite \textit{P. Nath} and \textit{D. K. Singh}, Aequationes Math. 96, No. 2, 325--338 (2022; Zbl 1487.39030) Full Text: DOI
Kim, Byungchan; Kim, Ji Young; Lee, Chong Gyu; Park, Poo-Sung Multiplicative functions additive on polygonal numbers. (English) Zbl 1479.11023 Aequationes Math. 95, No. 4, 601-621 (2021). MSC: 11A25 11E25 PDFBibTeX XMLCite \textit{B. Kim} et al., Aequationes Math. 95, No. 4, 601--621 (2021; Zbl 1479.11023) Full Text: DOI
Ayoubi, M.; Zeglami, D.; Aissi, Y. Wilson’s functional equation with an anti-endomorphism. (English) Zbl 1468.39010 Aequationes Math. 95, No. 3, 535-549 (2021). Reviewer: Mohammad Sal Moslehian (Mashhad) MSC: 39B52 PDFBibTeX XMLCite \textit{M. Ayoubi} et al., Aequationes Math. 95, No. 3, 535--549 (2021; Zbl 1468.39010) Full Text: DOI
Ajebbar, Omar; Elqorachi, Elhoucien A generalization of d’Alembert’s other functional equation on semigroups. (English) Zbl 1448.39037 Aequationes Math. 94, No. 5, 913-930 (2020). MSC: 39B52 39B32 PDFBibTeX XMLCite \textit{O. Ajebbar} and \textit{E. Elqorachi}, Aequationes Math. 94, No. 5, 913--930 (2020; Zbl 1448.39037) Full Text: DOI arXiv
Hooshmand, M. H. New results for the multiplicative symmetric equation and related conjecture. (English) Zbl 1436.39016 Aequationes Math. 94, No. 1, 123-136 (2020). Reviewer: Mohammad Sal Moslehian (Mashhad) MSC: 39B52 39B72 20N02 PDFBibTeX XMLCite \textit{M. H. Hooshmand}, Aequationes Math. 94, No. 1, 123--136 (2020; Zbl 1436.39016) Full Text: DOI
Belfakih, Keltouma; Elqorachi, Elhoucien A note on the Levi-Civita functional equation. (English) Zbl 1425.39013 Aequationes Math. 93, No. 6, 1275-1291 (2019). MSC: 39B52 39B32 PDFBibTeX XMLCite \textit{K. Belfakih} and \textit{E. Elqorachi}, Aequationes Math. 93, No. 6, 1275--1291 (2019; Zbl 1425.39013) Full Text: DOI arXiv
Ponpetch, Kanet; Laohakosol, Vichian; Mavecha, Sukrawan Independence of additive, multiplicative, exponential and logarithmic functions. (English) Zbl 1423.39029 Aequationes Math. 93, No. 5, 875-904 (2019). MSC: 39B05 39B22 11A25 PDFBibTeX XMLCite \textit{K. Ponpetch} et al., Aequationes Math. 93, No. 5, 875--904 (2019; Zbl 1423.39029) Full Text: DOI
Park, Poo-Sung On \(k\)-additive uniqueness of the set of squares for multiplicative functions. (English) Zbl 1422.11006 Aequationes Math. 92, No. 3, 487-495 (2018). MSC: 11A25 PDFBibTeX XMLCite \textit{P.-S. Park}, Aequationes Math. 92, No. 3, 487--495 (2018; Zbl 1422.11006) Full Text: DOI arXiv
Ajebbar, Omar; Elqorachi, Elhoucien The cosine-sine functional equation on a semigroup with an involutive automorphism. (English) Zbl 1385.39004 Aequationes Math. 91, No. 6, 1115-1146 (2017). Reviewer: Gian Luigi Forti (Milano) MSC: 39B32 39B42 PDFBibTeX XMLCite \textit{O. Ajebbar} and \textit{E. Elqorachi}, Aequationes Math. 91, No. 6, 1115--1146 (2017; Zbl 1385.39004) Full Text: DOI
Reem, Daniel Remarks on the Cauchy functional equation and variations of it. (English) Zbl 1368.39017 Aequationes Math. 91, No. 2, 237-264 (2017). Reviewer: Andrzej Smajdor (Kraków) MSC: 39B22 39B82 PDFBibTeX XMLCite \textit{D. Reem}, Aequationes Math. 91, No. 2, 237--264 (2017; Zbl 1368.39017) Full Text: DOI arXiv
Elhoucien, Elqorachi Integral Van Vleck’s and Kannappan’s functional equations on semigroups. (English) Zbl 1360.39013 Aequationes Math. 91, No. 1, 83-98 (2017). Reviewer: Maryam Amyari (Mashhad) MSC: 39B52 PDFBibTeX XMLCite \textit{E. Elhoucien}, Aequationes Math. 91, No. 1, 83--98 (2017; Zbl 1360.39013) Full Text: DOI arXiv
Nath, P.; Singh, D. K. On a sum form functional equation containing five unknown mappings. (English) Zbl 1358.39009 Aequationes Math. 90, No. 6, 1087-1101 (2016). Reviewer: Mihály Bessenyei (Debrecen) MSC: 39B22 PDFBibTeX XMLCite \textit{P. Nath} and \textit{D. K. Singh}, Aequationes Math. 90, No. 6, 1087--1101 (2016; Zbl 1358.39009) Full Text: DOI
Zeglami, D.; Fadli, B. Integral functional equations on locally compact groups with involution. (English) Zbl 1353.39023 Aequationes Math. 90, No. 5, 967-982 (2016). Reviewer: Pál Burai (Debrecen) MSC: 39B52 PDFBibTeX XMLCite \textit{D. Zeglami} and \textit{B. Fadli}, Aequationes Math. 90, No. 5, 967--982 (2016; Zbl 1353.39023) Full Text: DOI
Ostaszewski, A. J. Homomorphisms from functional equations: the Goldie equation. (English) Zbl 1342.33007 Aequationes Math. 90, No. 2, 427-448 (2016). Reviewer: Mohammad Sal Moslehian (Mashhad) MSC: 33B99 26A03 39B22 34D05 39A20 PDFBibTeX XMLCite \textit{A. J. Ostaszewski}, Aequationes Math. 90, No. 2, 427--448 (2016; Zbl 1342.33007) Full Text: DOI arXiv Link
Chung, Jaeyoung; Chang, Jeongwook Multiplicative type functional equations in a ring. (English) Zbl 1341.39014 Aequationes Math. 90, No. 2, 367-379 (2016). Reviewer: Maryam Amyari (Mashhad) MSC: 39B82 39B22 39B52 PDFBibTeX XMLCite \textit{J. Chung} and \textit{J. Chang}, Aequationes Math. 90, No. 2, 367--379 (2016; Zbl 1341.39014) Full Text: DOI
Járai, Antal A \(0-1\) law for multiplicative functional equations. (English) Zbl 1339.39019 Aequationes Math. 90, No. 1, 147-161 (2016). Reviewer: Jacek Chmieliński (Kraków) MSC: 39B52 PDFBibTeX XMLCite \textit{A. Járai}, Aequationes Math. 90, No. 1, 147--161 (2016; Zbl 1339.39019) Full Text: DOI
Perkins, Allison M.; Sahoo, Prasanna K. A functional equation with involution related to the cosine function. (English) Zbl 1341.39010 Aequationes Math. 90, No. 1, 123-131 (2016). Reviewer: Gian Luigi Forti (Milano) MSC: 39B52 PDFBibTeX XMLCite \textit{A. M. Perkins} and \textit{P. K. Sahoo}, Aequationes Math. 90, No. 1, 123--131 (2016; Zbl 1341.39010) Full Text: DOI
Bingham, N. H.; Ostaszewski, A. J. Cauchy’s functional equation and extensions: Goldie’s equation and inequality, the Gołąb-Schinzel equation and Beurling’s equation. (English) Zbl 1331.26003 Aequationes Math. 89, No. 5, 1293-1310 (2015). Reviewer: Anna Savvopoulou (South Bend) MSC: 26A03 33B99 39B22 34D05 39A20 PDFBibTeX XMLCite \textit{N. H. Bingham} and \textit{A. J. Ostaszewski}, Aequationes Math. 89, No. 5, 1293--1310 (2015; Zbl 1331.26003) Full Text: DOI arXiv
Ostaszewski, A. J. Beurling regular variation, Bloom dichotomy, and the Gołąb-Schinzel functional equation. (English) Zbl 1323.26004 Aequationes Math. 89, No. 3, 725-744 (2015). Reviewer: Gian Luigi Forti (Milano) MSC: 26A12 39B22 34D05 39A20 PDFBibTeX XMLCite \textit{A. J. Ostaszewski}, Aequationes Math. 89, No. 3, 725--744 (2015; Zbl 1323.26004) Full Text: DOI
Stetkær, Henrik A variant of d’Alembert’s functional equation. (English) Zbl 1317.39036 Aequationes Math. 89, No. 3, 657-662 (2015). Reviewer: Mohammad Sal Moslehian (Karlstad) MSC: 39B52 PDFBibTeX XMLCite \textit{H. Stetkær}, Aequationes Math. 89, No. 3, 657--662 (2015; Zbl 1317.39036) Full Text: DOI
Járai, Antal Regularity properties of measurable functions satisfying a multiplicative type functional equation almost everywhere. (English) Zbl 1322.39008 Aequationes Math. 89, No. 2, 367-381 (2015). Reviewer: Mihály Bessenyei (Debrecen) MSC: 39B05 28E99 PDFBibTeX XMLCite \textit{A. Járai}, Aequationes Math. 89, No. 2, 367--381 (2015; Zbl 1322.39008) Full Text: DOI
Lajkó, Károly; Mészáros, Fruzsina Multiplicative type functional equations arising from characterization problems. (English) Zbl 1259.39017 Aequationes Math. 83, No. 3, 199-208 (2012). Reviewer: Stefan Balint (Timişoara) MSC: 39B22 PDFBibTeX XMLCite \textit{K. Lajkó} and \textit{F. Mészáros}, Aequationes Math. 83, No. 3, 199--208 (2012; Zbl 1259.39017) Full Text: DOI
Lê, Công-Trình; Thái, Trung-Hiêu Jensen’s functional equation on the symmetric group \(S_n\). (English) Zbl 1238.39009 Aequationes Math. 82, No. 3, 269-276 (2011). Reviewer: Maryam Amyari (Mashhad) MSC: 39B52 39B42 20B30 PDFBibTeX XMLCite \textit{C.-T. Lê} and \textit{T.-H. Thái}, Aequationes Math. 82, No. 3, 269--276 (2011; Zbl 1238.39009) Full Text: DOI arXiv
Nath, Prem; Singh, Dhiraj Kumar On a sum form functional equation and its applications in information theory and statistics. (English) Zbl 1216.39030 Aequationes Math. 81, No. 1-2, 77-95 (2011). Reviewer: Pushpa N. Rathie (Brasilia) MSC: 39B22 39B52 94A15 62B10 94A24 94A17 PDFBibTeX XMLCite \textit{P. Nath} and \textit{D. K. Singh}, Aequationes Math. 81, No. 1--2, 77--95 (2011; Zbl 1216.39030) Full Text: DOI
Berrone, Lucio R.; Dieulefait, Luis V. A functional equation related to the product in a quadratic number field. (English) Zbl 1232.39023 Aequationes Math. 81, No. 1-2, 167-175 (2011). MSC: 39B22 PDFBibTeX XMLCite \textit{L. R. Berrone} and \textit{L. V. Dieulefait}, Aequationes Math. 81, No. 1--2, 167--175 (2011; Zbl 1232.39023) Full Text: DOI Link
Jabłońska, Eliza On solutions of a generalization of the Gołab-Schinzel equation. (English) Zbl 1095.39020 Aequationes Math. 71, No. 3, 269-279 (2006). Reviewer: János Aczél (Waterloo/Ontario) MSC: 39B52 39B22 PDFBibTeX XMLCite \textit{E. Jabłońska}, Aequationes Math. 71, No. 3, 269--279 (2006; Zbl 1095.39020) Full Text: DOI
Baker, John A. Locally Pexider. (English) Zbl 1088.39022 Aequationes Math. 70, No. 3, 314-320 (2005). Reviewer: Claudi Alsina (Barcelona) MSC: 39B52 39B82 PDFBibTeX XMLCite \textit{J. A. Baker}, Aequationes Math. 70, No. 3, 314--320 (2005; Zbl 1088.39022) Full Text: DOI
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
Šemrl, Peter Almost multiplicative functions and almost linear multiplicative functionals. (English) Zbl 1007.39024 Aequationes Math. 63, No. 1-2, 180-192 (2002). Reviewer: János Aczél (Waterloo/Ontario) MSC: 39B82 39B72 39B22 39B52 PDFBibTeX XMLCite \textit{P. Šemrl}, Aequationes Math. 63, No. 1--2, 180--192 (2002; Zbl 1007.39024) Full Text: DOI
Ebanks, Bruce R.; Kannappan, Palaniappan; Sahoo, Prasanna K.; Sander, Wolfgang Characterizations of sum form information measures on open domains. (English) Zbl 0880.39019 Aequationes Math. 54, No. 1-2, 1-30 (1997). Reviewer: J.Aczél (Waterloo/Ontario) MSC: 39B22 26A24 28A20 39B62 94A17 PDFBibTeX XMLCite \textit{B. R. Ebanks} et al., Aequationes Math. 54, No. 1--2, 1--30 (1997; Zbl 0880.39019) Full Text: DOI EuDML
Brillouet-Belluot, Nicole Multiplicative symmetry and related functional equations. (English) Zbl 0857.39015 Aequationes Math. 51, No. 1-2, 21-47 (1996). Reviewer: J.G.Dhombres (Paris) MSC: 39B52 PDFBibTeX XMLCite \textit{N. Brillouet-Belluot}, Aequationes Math. 51, No. 1--2, 21--47 (1996; Zbl 0857.39015) Full Text: DOI EuDML
Schwaiger, Jens On generalized hyperbolic functions and their characterization by functional equations. (English) Zbl 0755.39009 Aequationes Math. 43, No. 2-3, 198-210 (1992). Reviewer: J.Aczél (Waterloo / Ontario) MSC: 39B62 39B32 PDFBibTeX XMLCite \textit{J. Schwaiger}, Aequationes Math. 43, No. 2--3, 198--210 (1992; Zbl 0755.39009) Full Text: DOI EuDML
Gajda, Zbigniew On functional equations associated with characters of unitary representations of groups. (English) Zbl 0772.39007 Aequationes Math. 44, No. 1, 109-121 (1992). Reviewer: B.Choczewski (Kraków) MSC: 39B52 43A60 43A65 28C10 43A07 PDFBibTeX XMLCite \textit{Z. Gajda}, Aequationes Math. 44, No. 1, 109--121 (1992; Zbl 0772.39007) Full Text: DOI EuDML
Ng, C. T. Jensen’s functional equation on groups. (English) Zbl 0688.39007 Aequationes Math. 39, No. 1, 85-99 (1990). Reviewer: H.K.L.Vasudeva MSC: 39B52 PDFBibTeX XMLCite \textit{C. T. Ng}, Aequationes Math. 39, No. 1, 85--99 (1990; Zbl 0688.39007) Full Text: DOI EuDML
Páles, Zsolt On the characterization of quasiarithmetic means with weight function. (English) Zbl 0618.39006 Aequationes Math. 32, 171-194 (1987). Reviewer: J.Aczél MSC: 39B72 39B62 39B99 26A15 26A48 26B05 PDFBibTeX XMLCite \textit{Z. Páles}, Aequationes Math. 32, 171--194 (1987; Zbl 0618.39006) Full Text: DOI EuDML
Lawrence, John The stability of multiplicative semigroup homomorphisms to real normed algebras. (English) Zbl 0594.46047 Aequationes Math. 28, 94-101 (1985). Reviewer: J.B.Cooper MSC: 46H05 39B42 PDFBibTeX XMLCite \textit{J. Lawrence}, Aequationes Math. 28, 94--101 (1985; Zbl 0594.46047) Full Text: DOI EuDML
Eichhorn, Wolfgang; Gleißner, Winfried On a functional differential equation arising in the theory of the distribution of wealth. (English) Zbl 0567.35013 Aequationes Math. 28, 190-198 (1985). Reviewer: Z.Kamont MSC: 35F10 35R10 91B62 35C05 35A05 PDFBibTeX XMLCite \textit{W. Eichhorn} and \textit{W. Gleißner}, Aequationes Math. 28, 190--198 (1985; Zbl 0567.35013) Full Text: DOI EuDML
Reich, Ludwig; Schwaiger, Jens Über algebraische Relationen zwischen additiven und multiplikativen Funktionen. (German) Zbl 0546.39004 Aequationes Math. 27, 114-134 (1984). Reviewer: K.Heuvers MSC: 39B99 11R04 39A70 13A15 13F20 PDFBibTeX XMLCite \textit{L. Reich} and \textit{J. Schwaiger}, Aequationes Math. 27, 114--134 (1984; Zbl 0546.39004) Full Text: DOI EuDML
Benz, Walter On a functional equation arising from hyperbolic geometry. (English) Zbl 0443.39005 Aequationes Math. 21, 113-119 (1980). MSC: 39B52 39B99 13A15 13H05 51C05 51M10 06F25 PDFBibTeX XMLCite \textit{W. Benz}, Aequationes Math. 21, 113--119 (1980; Zbl 0443.39005) Full Text: DOI EuDML
Ivic, A.; Schwarz, W. Remarks on some number-theoretical functional equations. (English) Zbl 0435.10004 Aequationes Math. 20, 80-89 (1980). MSC: 11A25 39B05 PDFBibTeX XMLCite \textit{A. Ivic} and \textit{W. Schwarz}, Aequationes Math. 20, 80--89 (1980; Zbl 0435.10004) Full Text: DOI EuDML