Páles, Zsolt; Pasteczka, Paweł On the Jensen convexity of quasideviation and Bajraktarević means. (English) Zbl 07784712 Aequationes Math. 97, No. 5-6, 1201-1219 (2023). MSC: 26E60 26B25 39B62 PDFBibTeX XMLCite \textit{Z. Páles} and \textit{P. Pasteczka}, Aequationes Math. 97, No. 5--6, 1201--1219 (2023; Zbl 07784712) Full Text: DOI arXiv OA License
Olbryś, Andrzej Remarks on Wright-convex functions. (English) Zbl 07784709 Aequationes Math. 97, No. 5-6, 1157-1171 (2023). MSC: 26A51 39B62 26D15 PDFBibTeX XMLCite \textit{A. Olbryś}, Aequationes Math. 97, No. 5--6, 1157--1171 (2023; Zbl 07784709) Full Text: DOI OA License
Schwaiger, Jens On the existence of \(m\)-norms in vector spaces over valued fields. (English) Zbl 07784703 Aequationes Math. 97, No. 5-6, 1051-1058 (2023). MSC: 46A19 39B62 46S10 PDFBibTeX XMLCite \textit{J. Schwaiger}, Aequationes Math. 97, No. 5--6, 1051--1058 (2023; Zbl 07784703) Full Text: DOI OA License
Chmieliński, Jacek; Gryszka, Karol; Wójcik, Paweł Convex functions and approximate Birkhoff-James orthogonality. (English) Zbl 07784700 Aequationes Math. 97, No. 5-6, 1011-1021 (2023). MSC: 26A51 46B20 39B62 46B28 47B01 PDFBibTeX XMLCite \textit{J. Chmieliński} et al., Aequationes Math. 97, No. 5--6, 1011--1021 (2023; Zbl 07784700) Full Text: DOI OA License
Szostok, Tomasz On quadrature means. (English) Zbl 07784695 Aequationes Math. 97, No. 5-6, 935-949 (2023). MSC: 26E60 26A51 26D10 39B22 39B62 PDFBibTeX XMLCite \textit{T. Szostok}, Aequationes Math. 97, No. 5--6, 935--949 (2023; Zbl 07784695) Full Text: DOI OA License
Shulman, Ekaterina On metric stability of set-valued subadditive functions. (English) Zbl 07784693 Aequationes Math. 97, No. 5-6, 909-917 (2023). Reviewer: Gian Luigi Forti (Milano) MSC: 39B52 39B62 54C60 PDFBibTeX XMLCite \textit{E. Shulman}, Aequationes Math. 97, No. 5--6, 909--917 (2023; Zbl 07784693) Full Text: DOI OA License
Dăianu, D. M. General criteria for hyperstability of Cauchy-type equations. (English) Zbl 1519.39020 Aequationes Math. 97, No. 4, 837-851 (2023). Reviewer: Maryam Amyari (Mashhad) MSC: 39B82 39B52 39A70 39B62 39A10 PDFBibTeX XMLCite \textit{D. M. Dăianu}, Aequationes Math. 97, No. 4, 837--851 (2023; Zbl 1519.39020) Full Text: DOI
Olbryś, Andrzej Characterization of affine differences and related forms. (English) Zbl 1514.39016 Aequationes Math. 96, No. 6, 1303-1314 (2022). Reviewer: Maryam Amyari (Mashhad) MSC: 39B62 PDFBibTeX XMLCite \textit{A. Olbryś}, Aequationes Math. 96, No. 6, 1303--1314 (2022; Zbl 1514.39016) Full Text: DOI
Tareeghee, M. A.; Najati, A.; Abdollahpour, M. R.; Noori, B. On restricted functional inequalities associated with quadratic functional equations. (English) Zbl 1495.39015 Aequationes Math. 96, No. 4, 763-772 (2022). Reviewer: Gian Luigi Forti (Milano) MSC: 39B62 39B82 39B72 PDFBibTeX XMLCite \textit{M. A. Tareeghee} et al., Aequationes Math. 96, No. 4, 763--772 (2022; Zbl 1495.39015) Full Text: DOI
Jabłońska, Eliza; Nikodem, Kazimierz \(K\)-subadditive and \(K\)-superadditive set-valued functions bounded on “large” sets. (English) Zbl 1482.39038 Aequationes Math. 95, No. 6, 1221-1231 (2021). Reviewer: James Adedayo Oguntuase (Abeokuta) MSC: 39B62 54C60 26B25 PDFBibTeX XMLCite \textit{E. Jabłońska} and \textit{K. Nikodem}, Aequationes Math. 95, No. 6, 1221--1231 (2021; Zbl 1482.39038) Full Text: DOI
Kotrys, Dawid; Nikodem, Kazimierz Stochastic processes generating Schur-convex sums. (English) Zbl 1442.26015 Aequationes Math. 94, No. 3, 447-453 (2020). Reviewer: Adam Besenyei (Budapest) MSC: 26A51 39B62 60G99 PDFBibTeX XMLCite \textit{D. Kotrys} and \textit{K. Nikodem}, Aequationes Math. 94, No. 3, 447--453 (2020; Zbl 1442.26015) Full Text: DOI
Matkowski, Janusz; Wójcik, Paweł Sandwich results for periodicity and conjugacy. (English) Zbl 1436.39019 Aequationes Math. 94, No. 2, 381-391 (2020). Reviewer: James Adedayo Oguntuase (Abeokuta) MSC: 39B62 39B82 39B12 46B20 PDFBibTeX XMLCite \textit{J. Matkowski} and \textit{P. Wójcik}, Aequationes Math. 94, No. 2, 381--391 (2020; Zbl 1436.39019) Full Text: DOI
Adamek, Mirosław Remarks on \((F, t)\)-convex functions. (English) Zbl 1437.46064 Aequationes Math. 93, No. 5, 851-857 (2019). MSC: 46N10 26B25 39B62 PDFBibTeX XMLCite \textit{M. Adamek}, Aequationes Math. 93, No. 5, 851--857 (2019; Zbl 1437.46064) Full Text: DOI
Phochai, Theerayoot; Saejung, Satit The hyperstability of general linear equation via that of Cauchy equation. (English) Zbl 1417.39085 Aequationes Math. 93, No. 4, 781-789 (2019). Reviewer: Mohammad Sal Moslehian (Mashhad) MSC: 39B82 39B62 47H14 47J20 PDFBibTeX XMLCite \textit{T. Phochai} and \textit{S. Saejung}, Aequationes Math. 93, No. 4, 781--789 (2019; Zbl 1417.39085) Full Text: DOI
Izumi, Hideaki; Li, Lin; Matkowski, Janusz; Wróbel, Małgorzta Sandwich with periodicity. (English) Zbl 1418.26004 Aequationes Math. 93, No. 4, 699-709 (2019). MSC: 26A15 39B62 28B20 PDFBibTeX XMLCite \textit{H. Izumi} et al., Aequationes Math. 93, No. 4, 699--709 (2019; Zbl 1418.26004) Full Text: DOI
Bingham, N. H.; Ostaszewski, A. J. Variants on the Berz sublinearity theorem. (English) Zbl 1411.26005 Aequationes Math. 93, No. 2, 351-369 (2019). Reviewer: James Adedayo Oguntuase (Abeokuta) MSC: 26A03 39B62 PDFBibTeX XMLCite \textit{N. H. Bingham} and \textit{A. J. Ostaszewski}, Aequationes Math. 93, No. 2, 351--369 (2019; Zbl 1411.26005) Full Text: DOI arXiv
Dragomir, Silvestru Sever; Nikodem, Kazimierz Functions generating \((m,M,\Psi)\)-Schur-convex sums. (English) Zbl 1411.26010 Aequationes Math. 93, No. 1, 79-90 (2019). Reviewer: James Adedayo Oguntuase (Abeokuta) MSC: 26A51 39B62 PDFBibTeX XMLCite \textit{S. S. Dragomir} and \textit{K. Nikodem}, Aequationes Math. 93, No. 1, 79--90 (2019; Zbl 1411.26010) Full Text: DOI
Adamek, Mirosław On a generalization of sandwich type theorems. (English) Zbl 1405.46053 Aequationes Math. 92, No. 4, 641-647 (2018). MSC: 46N10 46C15 26B25 39B62 PDFBibTeX XMLCite \textit{M. Adamek}, Aequationes Math. 92, No. 4, 641--647 (2018; Zbl 1405.46053) Full Text: DOI
Monea, Mihai; Marinescu, Dan Ştefan An elementary proof for the majorization principle for Wright-convex functions. (English) Zbl 1393.26009 Aequationes Math. 92, No. 3, 577-580 (2018). Reviewer: James Adedayo Oguntuase (Abeokuta) MSC: 26A51 39B62 PDFBibTeX XMLCite \textit{M. Monea} and \textit{D. Ş. Marinescu}, Aequationes Math. 92, No. 3, 577--580 (2018; Zbl 1393.26009) Full Text: DOI
Kotrys, Dawid; Nikodem, Kazimierz Separation by Jensen and affine stochastic processes. (English) Zbl 1384.26035 Aequationes Math. 92, No. 1, 111-122 (2018). Reviewer: Sorin-Mihai Grad (Chemnitz) MSC: 26A51 39B62 60G99 PDFBibTeX XMLCite \textit{D. Kotrys} and \textit{K. Nikodem}, Aequationes Math. 92, No. 1, 111--122 (2018; Zbl 1384.26035) Full Text: DOI
Moradi, Hamid Reza; Omidvar, Mohsen Erfanian; Khan, Muhammad Adil; Nikodem, Kazimierz Around Jensen’s inequality for strongly convex functions. (English) Zbl 1491.47016 Aequationes Math. 92, No. 1, 25-37 (2018). MSC: 47A63 26B25 39B62 46L05 PDFBibTeX XMLCite \textit{H. R. Moradi} et al., Aequationes Math. 92, No. 1, 25--37 (2018; Zbl 1491.47016) Full Text: DOI arXiv
Sadowski, Łukasz New characterizations of the Takagi function via functional equations. (English) Zbl 1386.39038 Aequationes Math. 91, No. 6, 1001-1007 (2017). Reviewer: Mihály Bessenyei (Debrecen) MSC: 39B22 39B12 39B62 39B72 26A27 PDFBibTeX XMLCite \textit{Ł. Sadowski}, Aequationes Math. 91, No. 6, 1001--1007 (2017; Zbl 1386.39038) Full Text: DOI
Bingham, N. H.; Ostaszewski, A. J. Category-measure duality: convexity, midpoint convexity and Berz sublinearity. (English) Zbl 1434.26002 Aequationes Math. 91, No. 5, 801-836 (2017). MSC: 26A03 39B62 26A21 03E25 PDFBibTeX XMLCite \textit{N. H. Bingham} and \textit{A. J. Ostaszewski}, Aequationes Math. 91, No. 5, 801--836 (2017; Zbl 1434.26002) Full Text: DOI arXiv
Niezgoda, Marek Inequalities for convex sequences and nondecreasing convex functions. (English) Zbl 1364.39022 Aequationes Math. 91, No. 1, 1-20 (2017). Reviewer: Mihály Bessenyei (Debrecen) MSC: 39B62 26A51 PDFBibTeX XMLCite \textit{M. Niezgoda}, Aequationes Math. 91, No. 1, 1--20 (2017; Zbl 1364.39022) Full Text: DOI
Dong, Yunbai; Chen, Lihong On generalized Hyers-Ulam stability of additive mapings on restricted domains of Banach spaces. (English) Zbl 1355.39030 Aequationes Math. 90, No. 5, 871-878 (2016). Reviewer: Jacek Chmieliński (Kraków) MSC: 39B82 39B52 39B62 PDFBibTeX XMLCite \textit{Y. Dong} and \textit{L. Chen}, Aequationes Math. 90, No. 5, 871--878 (2016; Zbl 1355.39030) Full Text: DOI
Lara, Teodoro; Quintero, Roy; Rosales, Edgar; Sánchez, José Luis On a generalization of the class of Jensen convex functions. (English) Zbl 1456.26012 Aequationes Math. 90, No. 3, 569-580 (2016). MSC: 26A51 39B62 PDFBibTeX XMLCite \textit{T. Lara} et al., Aequationes Math. 90, No. 3, 569--580 (2016; Zbl 1456.26012) Full Text: DOI
Zhang, Dong On Hyers-Ulam stability of generalized linear functional equation and its induced Hyers-Ulam programming problem. (English) Zbl 1341.39018 Aequationes Math. 90, No. 3, 559-568 (2016). Reviewer: Pál Burai (Debrecen) MSC: 39B82 39B62 39B52 PDFBibTeX XMLCite \textit{D. Zhang}, Aequationes Math. 90, No. 3, 559--568 (2016; Zbl 1341.39018) Full Text: DOI
Páles, Zsolt; Radácsi, Éva Székelyné Characterizations of higher-order convexity properties with respect to Chebyshev systems. (English) Zbl 1351.26026 Aequationes Math. 90, No. 1, 193-210 (2016). Reviewer: Małgorzata Wróbel (Czȩstochowa) MSC: 26B25 39B62 PDFBibTeX XMLCite \textit{Z. Páles} and \textit{É. S. Radácsi}, Aequationes Math. 90, No. 1, 193--210 (2016; Zbl 1351.26026) Full Text: DOI arXiv
Merentes, Nelson; Nikodem, Kazimierz Strong convexity and separation theorems. (English) Zbl 1342.26029 Aequationes Math. 90, No. 1, 47-55 (2016). Reviewer: James Adedayo Oguntuase (Abeokuta) MSC: 26A51 39B62 PDFBibTeX XMLCite \textit{N. Merentes} and \textit{K. Nikodem}, Aequationes Math. 90, No. 1, 47--55 (2016; Zbl 1342.26029) Full Text: DOI
Chudziak, Jacek; Tabor, Jacek; Tabor, Józef Conditionally \(\delta\)-midconvex functions. (English) Zbl 1320.26006 Aequationes Math. 89, No. 4, 981-990 (2015). Reviewer: Krzysztof Ciepliński (Kraków) MSC: 26A51 26B25 39B62 PDFBibTeX XMLCite \textit{J. Chudziak} et al., Aequationes Math. 89, No. 4, 981--990 (2015; Zbl 1320.26006) Full Text: DOI
Olbryś, Andrzej A support theorem for delta \((s,t)\)-convex mappings. (English) Zbl 1318.39015 Aequationes Math. 89, No. 3, 937-948 (2015). Reviewer: Antonio Linero Bas (Murcia) MSC: 39B62 26A51 26B25 PDFBibTeX XMLCite \textit{A. Olbryś}, Aequationes Math. 89, No. 3, 937--948 (2015; Zbl 1318.39015) Full Text: DOI
Alzer, Horst A Kuczma-type functional inequality for error and complementary error functions. (English) Zbl 1321.26035 Aequationes Math. 89, No. 3, 927-935 (2015). Reviewer: József Sándor (Cluj-Napoca) MSC: 26D07 33B20 39B62 PDFBibTeX XMLCite \textit{H. Alzer}, Aequationes Math. 89, No. 3, 927--935 (2015; Zbl 1321.26035) Full Text: DOI
Szostok, Tomasz Ohlin’s lemma and some inequalities of the Hermite-Hadamard type. (English) Zbl 1326.26024 Aequationes Math. 89, No. 3, 915-926 (2015). Reviewer: Sanja Varošanec (Zagreb) MSC: 26A51 26D10 39B62 PDFBibTeX XMLCite \textit{T. Szostok}, Aequationes Math. 89, No. 3, 915--926 (2015; Zbl 1326.26024) Full Text: DOI
Brzdȩk, Janusz; Najdecki, Adam; Xu, Bing Two general theorems on superstability of functional equations. (English) Zbl 1322.39011 Aequationes Math. 89, No. 3, 771-783 (2015). Reviewer: Jacek Chmieliński (Kraków) MSC: 39B82 39B42 39B62 PDFBibTeX XMLCite \textit{J. Brzdȩk} et al., Aequationes Math. 89, No. 3, 771--783 (2015; Zbl 1322.39011) Full Text: DOI
Maksa, Gyula; Páles, Zsolt Convexity with respect to families of means. (English) Zbl 1316.39009 Aequationes Math. 89, No. 1, 161-167 (2015). Reviewer: Mihály Bessenyei (Debrecen) MSC: 39B62 26D07 26D15 26A51 PDFBibTeX XMLCite \textit{G. Maksa} and \textit{Z. Páles}, Aequationes Math. 89, No. 1, 161--167 (2015; Zbl 1316.39009) Full Text: DOI arXiv
Fechner, Włodzimierz Hlawka’s functional inequality. (English) Zbl 1316.26019 Aequationes Math. 87, No. 1-2, 71-87 (2014). Reviewer: Petr Gurka (Praha) MSC: 26D05 39B62 46B20 46B25 47A63 PDFBibTeX XMLCite \textit{W. Fechner}, Aequationes Math. 87, No. 1--2, 71--87 (2014; Zbl 1316.26019) Full Text: DOI
Brzdęk, Janusz Stability of the equation of the \(p\)-Wright affine functions. (English) Zbl 1272.39015 Aequationes Math. 85, No. 3, 497-503 (2013). Reviewer: Ghadir Sadeghi (Sabzevār) MSC: 39B82 39B62 39B52 46L57 PDFBibTeX XMLCite \textit{J. Brzdęk}, Aequationes Math. 85, No. 3, 497--503 (2013; Zbl 1272.39015) Full Text: DOI
Jayaram, Balasubramaniam Solution to an open problem: a characterization of conditionally cancellative t-subnorms. (English) Zbl 1273.26037 Aequationes Math. 84, No. 3, 235-244 (2012). Reviewer: Gabriela Cristescu (Arad) MSC: 26E50 26D07 39B62 54E70 PDFBibTeX XMLCite \textit{B. Jayaram}, Aequationes Math. 84, No. 3, 235--244 (2012; Zbl 1273.26037) Full Text: DOI
Fošner, Ajda On the generalized Hyers-Ulam stability of module left \((m,n)\)-derivations. (English) Zbl 1267.39022 Aequationes Math. 84, No. 1-2, 91-98 (2012). Reviewer: Nasrin Eghbali (Ardabil) MSC: 39B82 39B62 39B52 46H25 46L57 16W25 PDFBibTeX XMLCite \textit{A. Fošner}, Aequationes Math. 84, No. 1--2, 91--98 (2012; Zbl 1267.39022) Full Text: DOI
Inoan, D.; Raşa, I. A majorization inequality for Wright-convex functions revisited. (English) Zbl 1250.26010 Aequationes Math. 83, No. 3, 209-214 (2012). Reviewer: Krzysztof Ciepliński (Kraków) MSC: 26A51 39B62 PDFBibTeX XMLCite \textit{D. Inoan} and \textit{I. Raşa}, Aequationes Math. 83, No. 3, 209--214 (2012; Zbl 1250.26010) Full Text: DOI
Spurek, P.; Tabor, Ja. Numerical verification of condition for approximately midconvex functions. (English) Zbl 1250.26012 Aequationes Math. 83, No. 3, 223-237 (2012). Reviewer: Krzysztof Ciepliński (Kraków) MSC: 26A51 39B62 65G40 PDFBibTeX XMLCite \textit{P. Spurek} and \textit{Ja. Tabor}, Aequationes Math. 83, No. 3, 223--237 (2012; Zbl 1250.26012) Full Text: DOI
Tabor, Jacek; Tabor, Józef; Żołdak, Marek On \(\omega \)-strongly quasiconvex and \(\omega \)-strongly quasiconcave sequences. (English) Zbl 1238.26012 Aequationes Math. 82, No. 3, 255-268 (2011). Reviewer: Juan-Enrique Martínez-Legaz (Barcelona) MSC: 26A51 39B62 PDFBibTeX XMLCite \textit{J. Tabor} et al., Aequationes Math. 82, No. 3, 255--268 (2011; Zbl 1238.26012) Full Text: DOI
Daróczy, Zoltán On the equality and comparison problem of a class of mean values. (English) Zbl 1228.39019 Aequationes Math. 81, No. 3, 201-208 (2011). Reviewer: Stefan Czerwik (Gliwice) MSC: 39B22 39B62 PDFBibTeX XMLCite \textit{Z. Daróczy}, Aequationes Math. 81, No. 3, 201--208 (2011; Zbl 1228.39019) Full Text: DOI
Saminger-Platz, Susanne; Sempi, Carlo A primer on triangle functions. II. (English) Zbl 1213.39031 Aequationes Math. 80, No. 3, 239-268 (2010). MSC: 39B99 39B62 20M99 PDFBibTeX XMLCite \textit{S. Saminger-Platz} and \textit{C. Sempi}, Aequationes Math. 80, No. 3, 239--268 (2010; Zbl 1213.39031) Full Text: DOI
Jarczyk, Witold Almost convexity on Abelian groups. (English) Zbl 1213.26014 Aequationes Math. 80, No. 1-2, 141-154 (2010). Reviewer: Gheorghe Toader (Cluj-Napoca) MSC: 26A51 39B62 39B52 PDFBibTeX XMLCite \textit{W. Jarczyk}, Aequationes Math. 80, No. 1--2, 141--154 (2010; Zbl 1213.26014) Full Text: DOI
Merentes, Nelson; Nikodem, Kazimierz Remarks on strongly convex functions. (English) Zbl 1214.26007 Aequationes Math. 80, No. 1-2, 193-199 (2010). Reviewer: Gheorghe Toader (Cluj-Napoca) MSC: 26A51 39B62 PDFBibTeX XMLCite \textit{N. Merentes} and \textit{K. Nikodem}, Aequationes Math. 80, No. 1--2, 193--199 (2010; Zbl 1214.26007) Full Text: DOI
Ger, Roman; Sablik, Maciej Homomorphisms and boundedness in topological groups. (English) Zbl 1215.39027 Aequationes Math. 80, No. 1-2, 119-130 (2010). Reviewer: Mihály Bessenyei (Debrecen) MSC: 39B52 39B62 PDFBibTeX XMLCite \textit{R. Ger} and \textit{M. Sablik}, Aequationes Math. 80, No. 1--2, 119--130 (2010; Zbl 1215.39027) Full Text: DOI
Fechner, Włodzimierz On some composite functional inequalities. (English) Zbl 1216.39027 Aequationes Math. 79, No. 3, 307-314 (2010). Reviewer: Gian Luigi Forti (Milano) MSC: 39B12 39B62 PDFBibTeX XMLCite \textit{W. Fechner}, Aequationes Math. 79, No. 3, 307--314 (2010; Zbl 1216.39027) Full Text: DOI
Ghiselli Ricci, Roberto Solution of an open problem of Alsina, Frank and Schweizer. (English) Zbl 1204.39021 Aequationes Math. 77, No. 3, 237-242 (2009). MSC: 39B22 39B62 PDFBibTeX XMLCite \textit{R. Ghiselli Ricci}, Aequationes Math. 77, No. 3, 237--242 (2009; Zbl 1204.39021) Full Text: DOI
Lewicki, Michał Measurability of \((M,N)\)-Wright convex functions. (English) Zbl 1210.26012 Aequationes Math. 78, No. 1-2, 9-22 (2009). Reviewer: Ioan Raşa (Cluj-Napoca) MSC: 26A51 39B62 26E60 PDFBibTeX XMLCite \textit{M. Lewicki}, Aequationes Math. 78, No. 1--2, 9--22 (2009; Zbl 1210.26012) Full Text: DOI
Moszner, Zenon On the stability of functional equations. (English) Zbl 1207.39044 Aequationes Math. 77, No. 1-2, 33-88 (2009). MSC: 39B82 39B62 39B52 PDFBibTeX XMLCite \textit{Z. Moszner}, Aequationes Math. 77, No. 1--2, 33--88 (2009; Zbl 1207.39044) Full Text: DOI
Krassowska, Dorota; Małolepszy, Tomasz; Matkowski, Janusz A pair of functional inequalities characterizing polynomials and Bernoulli numbers. (English) Zbl 1153.39030 Aequationes Math. 75, No. 3, 276-288 (2008). Reviewer: Mihály Bessenyei (Debrecen) MSC: 39B62 26D15 11B68 PDFBibTeX XMLCite \textit{D. Krassowska} et al., Aequationes Math. 75, No. 3, 276--288 (2008; Zbl 1153.39030) Full Text: DOI
Sarkoci, Peter Dominance is not transitive on continuous triangular norms. (English) Zbl 1148.26016 Aequationes Math. 75, No. 3, 201-207 (2008). MSC: 26D07 39B62 54E70 PDFBibTeX XMLCite \textit{P. Sarkoci}, Aequationes Math. 75, No. 3, 201--207 (2008; Zbl 1148.26016) Full Text: DOI
Maligranda, Lech A result of Tosio Aoki about a generalization of Hyers-Ulam stability of additive functions – a question of priority. (English) Zbl 1158.39019 Aequationes Math. 75, No. 3, 289-296 (2008). Reviewer: Themistocles M. Rassias (Athens) MSC: 39B82 47H10 39B62 39B52 PDFBibTeX XMLCite \textit{L. Maligranda}, Aequationes Math. 75, No. 3, 289--296 (2008; Zbl 1158.39019) Full Text: DOI
Bahyrycz, Anna Forti’s example of an unstable homomorphism equation. (English) Zbl 1165.39021 Aequationes Math. 74, No. 3, 310-313 (2007). Reviewer: Gian Luigi Forti (Milano) MSC: 39B62 39B82 PDFBibTeX XMLCite \textit{A. Bahyrycz}, Aequationes Math. 74, No. 3, 310--313 (2007; Zbl 1165.39021) Full Text: DOI
Házy, Attila On the stability of \(t\)-convex functions. (English) Zbl 1130.26006 Aequationes Math. 74, No. 3, 210-218 (2007). MSC: 26A51 26B25 39B62 PDFBibTeX XMLCite \textit{A. Házy}, Aequationes Math. 74, No. 3, 210--218 (2007; Zbl 1130.26006) Full Text: DOI
Fechner, Włodzimierz Stability of a functional inequality associated with the Jordan-von Neumann functional equation. (English) Zbl 1098.39019 Aequationes Math. 71, No. 1-2, 149-161 (2006). Reviewer: Paşc Găvruţă (Timişoara) MSC: 39B82 39B52 39B62 PDFBibTeX XMLCite \textit{W. Fechner}, Aequationes Math. 71, No. 1--2, 149--161 (2006; Zbl 1098.39019) Full Text: DOI
Riedel, Thomas; Sahoo, Prasanna K. A characterization of the Stolarsky mean. (English) Zbl 1080.26027 Aequationes Math. 70, No. 1-2, 51-62 (2005). Reviewer: József Sándor (Cluj-Napoca) MSC: 26E60 26D15 39B62 PDFBibTeX XMLCite \textit{T. Riedel} and \textit{P. K. Sahoo}, Aequationes Math. 70, No. 1--2, 51--62 (2005; Zbl 1080.26027) Full Text: DOI
Tyrala, Iwona The stability of d’Alembert’s functional equation. (English) Zbl 1072.39026 Aequationes Math. 69, No. 3, 250-256 (2005). Reviewer: Jacek Chmielinski (Kraków) MSC: 39B82 39B52 39B62 PDFBibTeX XMLCite \textit{I. Tyrala}, Aequationes Math. 69, No. 3, 250--256 (2005; Zbl 1072.39026) Full Text: DOI
Baron, Karol; Jarczyk, Witold Random-valued functions and iterative functional equations. (English) Zbl 1060.39017 Aequationes Math. 67, No. 1-2, 140-153 (2004). Reviewer: Claudi Alsina (Barcelona) MSC: 39B12 39B22 39B62 60F15 60G42 PDFBibTeX XMLCite \textit{K. Baron} and \textit{W. Jarczyk}, Aequationes Math. 67, No. 1--2, 140--153 (2004; Zbl 1060.39017) Full Text: DOI
Olbryś, Andrzej On the measurability and the Baire property of \(t\)-Wright-convex functions. (English) Zbl 1067.26009 Aequationes Math. 68, No. 1-2, 28-37 (2004). Reviewer: Zsolt Páles (Debrecen) MSC: 26A51 26A15 39B62 28A20 PDFBibTeX XMLCite \textit{A. Olbryś}, Aequationes Math. 68, No. 1--2, 28--37 (2004; Zbl 1067.26009) Full Text: DOI
Bartłomiejczyk, Lech; Drewniak, Józef A characterization of sets and operations invariant under bijections. (English) Zbl 1055.39035 Aequationes Math. 68, No. 1-2, 1-9 (2004). Reviewer: János Aczél (Waterloo/Ontario) MSC: 39B22 03B52 26B40 39B62 PDFBibTeX XMLCite \textit{L. Bartłomiejczyk} and \textit{J. Drewniak}, Aequationes Math. 68, No. 1--2, 1--9 (2004; Zbl 1055.39035) Full Text: DOI
Rätz, Jürg On inequalities associated with the Jordan-von Neumann functional equation. (English) Zbl 1078.39026 Aequationes Math. 66, No. 1-2, 191-200 (2003). Reviewer: James Adedayo Oguntuase (Abeokuta) MSC: 39B62 PDFBibTeX XMLCite \textit{J. Rätz}, Aequationes Math. 66, No. 1--2, 191--200 (2003; Zbl 1078.39026) Full Text: DOI Link
Alsina, C.; Frank, M. J.; Schweizer, B. Problems on associative functions. (English) Zbl 1077.39021 Aequationes Math. 66, No. 1-2, 128-140 (2003). Reviewer: Gian Luigi Forti (Milano) MSC: 39B22 39B52 39-02 39B62 62H05 60B05 PDFBibTeX XMLCite \textit{C. Alsina} et al., Aequationes Math. 66, No. 1--2, 128--140 (2003; Zbl 1077.39021) Full Text: DOI
Alzer, Horst Functional inequalities for the error function. (English) Zbl 1072.33001 Aequationes Math. 66, No. 1-2, 119-127 (2003). MSC: 33B20 39B62 PDFBibTeX XMLCite \textit{H. Alzer}, Aequationes Math. 66, No. 1--2, 119--127 (2003; Zbl 1072.33001) Full Text: DOI
Mrowiec, Jacek On the stability of Wright-convex functions. (English) Zbl 1023.39025 Aequationes Math. 65, No. 1-2, 158-164 (2003). Reviewer: Szymon Wasowicz (Bielsko-Biała) MSC: 39B82 26A51 39B62 PDFBibTeX XMLCite \textit{J. Mrowiec}, Aequationes Math. 65, No. 1--2, 158--164 (2003; Zbl 1023.39025) Full Text: DOI
Babilonová-Štefánková, Marta Solution of a problem of S. Marcus concerning Jensen-convex functions. (English) Zbl 1013.26009 Aequationes Math. 63, No. 1-2, 136-139 (2002). Reviewer: Solomon Marcus (Bucureşti) MSC: 26B25 26A51 39B62 PDFBibTeX XMLCite \textit{M. Babilonová-Štefánková}, Aequationes Math. 63, No. 1--2, 136--139 (2002; Zbl 1013.26009) Full Text: DOI
Páles, Zsolt Problems in the regularity theory of functional equations. (English) Zbl 1007.39015 Aequationes Math. 63, No. 1-2, 1-17 (2002). Reviewer: János Aczél (Waterloo/Ontario) MSC: 39B05 26A51 28A20 39B22 39B62 26A15 26A16 26A48 PDFBibTeX XMLCite \textit{Z. Páles}, Aequationes Math. 63, No. 1--2, 1--17 (2002; Zbl 1007.39015) Full Text: DOI
Gilányi, Attila An inequality, equivalent to the parallelogram equation. (Eine zur Parallelogrammgleichung äquivalente Ungleichung.) (German) Zbl 0992.39026 Aequationes Math. 62, No. 3, 303-309 (2001). Reviewer: Pl.Kannappan (Waterloo/Ontario) MSC: 39B62 39B52 PDFBibTeX XMLCite \textit{A. Gilányi}, Aequationes Math. 62, No. 3, 303--309 (2001; Zbl 0992.39026) Full Text: DOI
Zdun, Marek Cezary On conjugacy of some systems of functions. (English) Zbl 0994.39020 Aequationes Math. 61, No. 3, 239-254 (2001). Reviewer: D.M.Bors (Iaşi) MSC: 39B62 39B12 39B22 26A30 PDFBibTeX XMLCite \textit{M. C. Zdun}, Aequationes Math. 61, No. 3, 239--254 (2001; Zbl 0994.39020) Full Text: DOI
Baron, Karol; Jarczyk, Witold Recent results on functional equations in a single variable, perspectives and open problems. (English) Zbl 0972.39011 Aequationes Math. 61, No. 1-2, 1-48 (2001). Reviewer: János Aczél (Waterloo/Ontario) MSC: 39B12 39-02 26A18 26A27 26E25 28C20 39B22 39B32 39B62 PDFBibTeX XMLCite \textit{K. Baron} and \textit{W. Jarczyk}, Aequationes Math. 61, No. 1--2, 1--48 (2001; Zbl 0972.39011) Full Text: DOI
Choczewski, Bogdan Solutions of linear iterative functional equations behaving like the forcing term in the equation. (English) Zbl 0972.39014 Aequationes Math. 60, No. 3, 308-314 (2000). Reviewer: G.L.Forti (Milano) MSC: 39B12 39B62 PDFBibTeX XMLCite \textit{B. Choczewski}, Aequationes Math. 60, No. 3, 308--314 (2000; Zbl 0972.39014) Full Text: DOI
Eichhorn, Wolfgang; Funke, Helmut; Krtscha, Manfred A characterization of inequality measures based on bilateral inequality. (English) Zbl 0984.39013 Aequationes Math. 60, No. 3, 298-307 (2000). Reviewer: Rimas Norvaiša (Vilnius) MSC: 39B62 39B72 91C05 PDFBibTeX XMLCite \textit{W. Eichhorn} et al., Aequationes Math. 60, No. 3, 298--307 (2000; Zbl 0984.39013) Full Text: DOI
Sablik, Maciej Taylor’s theorem and functional equations. (English) Zbl 0970.39022 Aequationes Math. 60, No. 3, 258-267 (2000). Reviewer: Borislav Crstici (Timişoara) MSC: 39B62 39B22 39B52 PDFBibTeX XMLCite \textit{M. Sablik}, Aequationes Math. 60, No. 3, 258--267 (2000; Zbl 0970.39022) Full Text: DOI
Ger, Roman; Koclȩga, Barbara Isometries and a generalized Cauchy equation. (English) Zbl 0965.39022 Aequationes Math. 60, No. 1-2, 72-76 (2000). Reviewer: János Aczél (Waterloo/Ontario) MSC: 39B52 39B62 46B04 46B20 PDFBibTeX XMLCite \textit{R. Ger} and \textit{B. Koclȩga}, Aequationes Math. 60, No. 1--2, 72--76 (2000; Zbl 0965.39022) Full Text: DOI
Halter-Koch, Franz Characterization of field homomorphisms and derivations by functional equations. (English) Zbl 0962.39013 Aequationes Math. 59, No. 3, 298-305 (2000). Reviewer: S.L.Segal (Rochester) MSC: 39B52 39B62 12E99 PDFBibTeX XMLCite \textit{F. Halter-Koch}, Aequationes Math. 59, No. 3, 298--305 (2000; Zbl 0962.39013) Full Text: DOI
Chmieliński, Jacek Almost approximately inner product preserving mappings. (English) Zbl 0961.39010 Aequationes Math. 59, No. 3, 214-221 (2000). Reviewer: Bogdan Choczewski (Kraków) MSC: 39B52 46C05 47J20 39B55 39B62 PDFBibTeX XMLCite \textit{J. Chmieliński}, Aequationes Math. 59, No. 3, 214--221 (2000; Zbl 0961.39010) Full Text: DOI
Klapka, Lubomír The functional definition of generalized geodesics. (English) Zbl 0959.39024 Aequationes Math. 59, No. 3, 201-213 (2000). Reviewer: János Aczél (Waterloo/Ontario) MSC: 39B52 39B62 53B05 53B15 53B20 53C05 53C22 57N45 PDFBibTeX XMLCite \textit{L. Klapka}, Aequationes Math. 59, No. 3, 201--213 (2000; Zbl 0959.39024) Full Text: DOI
Finol, Carlos E.; Wójtowicz, Marek Multiplicative properties of real functions with applications to classical functions. (English) Zbl 0956.39019 Aequationes Math. 59, No. 1-2, 134-149 (2000). Reviewer: János Aczél (Waterloo/Ontario) MSC: 39B62 26D05 26A48 33B15 26A51 26A09 26D07 33B10 33E20 PDFBibTeX XMLCite \textit{C. E. Finol} and \textit{M. Wójtowicz}, Aequationes Math. 59, No. 1--2, 134--149 (2000; Zbl 0956.39019) Full Text: DOI
Pycia, Marek A convolution inequality. (English) Zbl 0934.39010 Aequationes Math. 57, No. 2-3, 185-200 (1999). Reviewer: Prasanna Sahoo (Louisville) MSC: 39B62 45E10 26A51 26D15 PDFBibTeX XMLCite \textit{M. Pycia}, Aequationes Math. 57, No. 2--3, 185--200 (1999; Zbl 0934.39010) Full Text: DOI
Suzuki, Mami Holomorphic solutions of some system of \(n\) functional equations with \(n\) variables related to difference systems. (English) Zbl 0924.39019 Aequationes Math. 57, No. 1, 21-36 (1999). Reviewer: B.Crstici (Timişoara) MSC: 39B62 39A10 PDFBibTeX XMLCite \textit{M. Suzuki}, Aequationes Math. 57, No. 1, 21--36 (1999; Zbl 0924.39019) Full Text: DOI
Chmieliński, Jacek On a conditional Wigner equation. (English) Zbl 0916.39005 Aequationes Math. 56, No. 1-2, 143-148 (1998). Reviewer: B.Choczewski (Kraków) MSC: 39B52 39B62 PDFBibTeX XMLCite \textit{J. Chmieliński}, Aequationes Math. 56, No. 1--2, 143--148 (1998; Zbl 0916.39005) Full Text: DOI
Chung, Jukang K.; Kannappan, Palaniappan; Sahoo, Prasanna K. On second differences in product form. (English) Zbl 0892.39021 Aequationes Math. 55, No. 1-2, 44-60 (1998). Reviewer: János Aczél (Waterloo/Ontario) MSC: 39B62 39B52 PDFBibTeX XMLCite \textit{J. K. Chung} et al., Aequationes Math. 55, No. 1--2, 44--60 (1998; Zbl 0892.39021) Full Text: DOI
Losonczi, László A structure theorem for sum form functional equations. (English) Zbl 0869.39008 Aequationes Math. 53, No. 1-2, 141-154 (1997). Reviewer: Pl.Kannappan (Waterloo/Ontario) MSC: 39B32 39B62 PDFBibTeX XMLCite \textit{L. Losonczi}, Aequationes Math. 53, No. 1--2, 141--154 (1997; Zbl 0869.39008) Full Text: DOI EuDML
Lucht, Lutz G. Arithmetical sequences and systems of functional equations. (English) Zbl 0881.39021 Aequationes Math. 53, No. 1-2, 73-90 (1997). Reviewer: M.C.Zdun (Kraków) MSC: 39B62 11A25 PDFBibTeX XMLCite \textit{L. G. Lucht}, Aequationes Math. 53, No. 1--2, 73--90 (1997; Zbl 0881.39021) Full Text: DOI EuDML
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
Kairies, Hans-Heinrich Functional equations for peculiar functions. (English) Zbl 0876.39004 Aequationes Math. 53, No. 3, 207-241 (1997). Reviewer: J.Aczel (Waterloo/Ontario) MSC: 39B22 26A27 39B62 26A30 PDFBibTeX XMLCite \textit{H.-H. Kairies}, Aequationes Math. 53, No. 3, 207--241 (1997; Zbl 0876.39004) Full Text: DOI EuDML
Forti, Gian Luigi; Paganoni, Luigi A system of functional equations related to plurality functions. A method for the construction of the solutions. (English) Zbl 0861.39021 Aequationes Math. 52, No. 1-2, 135-156 (1996). Reviewer: H.L.Vasudeva (Chandigarh) MSC: 39B62 91B10 PDFBibTeX XMLCite \textit{G. L. Forti} and \textit{L. Paganoni}, Aequationes Math. 52, No. 1--2, 135--156 (1996; Zbl 0861.39021) Full Text: DOI EuDML
Forti, Gian Luigi Hyers-Ulam stability of functional equations in several variables. (English) Zbl 0836.39007 Aequationes Math. 50, No. 1-2, 143-190 (1995). Reviewer: A.Smajdor (Katowice) MSC: 39B62 39B32 39B22 39-00 39-03 PDFBibTeX XMLCite \textit{G. L. Forti}, Aequationes Math. 50, No. 1--2, 143--190 (1995; Zbl 0836.39007) Full Text: DOI EuDML
Losonczi, László Solution of (2,2)-type sum form functional equations with several unknown functions. (English) Zbl 0803.39008 Aequationes Math. 47, No. 2-3, 191-202 (1994). Reviewer: P.N.Rathie (Brasilia) MSC: 39B32 39B62 PDFBibTeX XMLCite \textit{L. Losonczi}, Aequationes Math. 47, No. 2--3, 191--202 (1994; Zbl 0803.39008) Full Text: DOI EuDML
Girgensohn, Roland Nowhere differentiable solutions of a system of functional equations. (English) Zbl 0791.26005 Aequationes Math. 47, No. 1, 89-99 (1994). MSC: 26A27 39B62 PDFBibTeX XMLCite \textit{R. Girgensohn}, Aequationes Math. 47, No. 1, 89--99 (1994; Zbl 0791.26005) Full Text: DOI EuDML
Paganoni Marzegalli, Stefania One-parameter system of functional equations. (English) Zbl 0828.39015 Aequationes Math. 47, No. 1, 50-59 (1994). Reviewer: M.C.Zdun (Kraków) MSC: 39B62 39B22 PDFBibTeX XMLCite \textit{S. Paganoni Marzegalli}, Aequationes Math. 47, No. 1, 50--59 (1994; Zbl 0828.39015) Full Text: DOI EuDML
Girgensohn, Roland Functional equations and nowhere differentiable functions. (English) Zbl 0788.26007 Aequationes Math. 46, No. 3, 243-256 (1993). Reviewer: G.L.Forti (Milano) MSC: 26A27 39B62 PDFBibTeX XMLCite \textit{R. Girgensohn}, Aequationes Math. 46, No. 3, 243--256 (1993; Zbl 0788.26007) Full Text: EuDML
Förg-Rob, Wolfgang; Schwaiger, Jens On the stability of a system of functional equations characterizing generalized hyperbolic and trigonometric functions. (English) Zbl 0774.39007 Aequationes Math. 45, No. 2-3, 285-296 (1993). Reviewer: K.Nikodem (Bielsko-Biała) MSC: 39B62 39B32 33B10 PDFBibTeX XMLCite \textit{W. Förg-Rob} and \textit{J. Schwaiger}, Aequationes Math. 45, No. 2--3, 285--296 (1993; Zbl 0774.39007) 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
Sablik, Maciej The continuous solution of a functional equation of Abel. (English) Zbl 0694.39004 Aequationes Math. 39, No. 1, 19-39 (1990). Reviewer: C.T.Ng MSC: 39B62 PDFBibTeX XMLCite \textit{M. Sablik}, Aequationes Math. 39, No. 1, 19--39 (1990; Zbl 0694.39004) Full Text: DOI EuDML
McGill, Paul Jacobi elliptic functions and change of variable in a convolution. (English) Zbl 0689.39005 Aequationes Math. 39, No. 1, 114-119 (1990). Reviewer: K.Nikodem MSC: 39B62 33E05 60J65 PDFBibTeX XMLCite \textit{P. McGill}, Aequationes Math. 39, No. 1, 114--119 (1990; Zbl 0689.39005) Full Text: DOI EuDML
Aczél, János; Kuczma, Marek On two mean value properties and functional equations associated with them. (English) Zbl 0688.39006 Aequationes Math. 38, No. 2-3, 216-235 (1989). Reviewer: B.Choczewski MSC: 39B62 26A24 39B52 PDFBibTeX XMLCite \textit{J. Aczél} and \textit{M. Kuczma}, Aequationes Math. 38, No. 2--3, 216--235 (1989; Zbl 0688.39006) Full Text: DOI EuDML
Paganoni, Luigi; Paganoni Marzegalli, Stefania Holomorphic solutions of an inhomogeneous Cauchy equation. (English) Zbl 0679.39002 Aequationes Math. 37, No. 2-3, 179-200 (1989). Reviewer: F.W.Carroll MSC: 39B62 30D05 33E05 PDFBibTeX XMLCite \textit{L. Paganoni} and \textit{S. Paganoni Marzegalli}, Aequationes Math. 37, No. 2--3, 179--200 (1989; Zbl 0679.39002) Full Text: DOI EuDML
Haruki, Hiroshi On a functional equation of Pexider type. (English) Zbl 0656.39004 Aequationes Math. 36, No. 1, 1-19 (1988). Reviewer: S.L.Segal MSC: 39B62 30D05 PDFBibTeX XMLCite \textit{H. Haruki}, Aequationes Math. 36, No. 1, 1--19 (1988; Zbl 0656.39004) Full Text: DOI EuDML