Charifi, A.; Zeglami, D.; Kabbaj, S. Solution of generalized Jensen and quadratic functional equations. (English) Zbl 1448.39039 Anastassiou, George A. (ed.) et al., Frontiers in functional equations and analytic inequalities. Cham: Springer. 273-292 (2019). Reviewer: Henrik Stetkær (Aarhus) MSC: 39B52 PDF BibTeX XML Cite \textit{A. Charifi} et al., in: Frontiers in functional equations and analytic inequalities. Cham: Springer. 273--292 (2019; Zbl 1448.39039) Full Text: DOI OpenURL
Khanehgir, Mahnaz Stability of the Jensen’s functional equation in multi-fuzzy normed spaces. (English) Zbl 1398.39018 Iran. J. Fuzzy Syst. 14, No. 3, 105-119 (2017). MSC: 39B82 39B52 46S40 PDF BibTeX XML Cite \textit{M. Khanehgir}, Iran. J. Fuzzy Syst. 14, No. 3, 105--119 (2017; Zbl 1398.39018) Full Text: DOI OpenURL
Charifi, A.; Kabbaj, S.; Zeglami, D. Non-Archimedian stability of generalized Jensen’s and quadratic equations. (English) Zbl 1413.39054 Acta Univ. Apulensis, Math. Inform. 45, 11-29 (2016). MSC: 39B82 39B72 39B52 PDF BibTeX XML Cite \textit{A. Charifi} et al., Acta Univ. Apulensis, Math. Inform. 45, 11--29 (2016; Zbl 1413.39054) OpenURL
Fadli, Brahim; Zeglami, Driss; Kabbaj, Samir A variant of Jensen’s functional equation on semigroups. (English) Zbl 1354.39016 Demonstr. Math. 49, No. 4, 413-420 (2016). MSC: 39B52 PDF BibTeX XML Cite \textit{B. Fadli} et al., Demonstr. Math. 49, No. 4, 413--420 (2016; Zbl 1354.39016) Full Text: DOI OpenURL
Bahyrycz, Anna; Ciepliński, Krzysztof; Olko, Jolanta On an equation characterizing multi-Cauchy-Jensen mappings and its Hyers-Ulam stability. (English) Zbl 1349.39043 Acta Math. Sci., Ser. B, Engl. Ed. 35, No. 6, 1349-1358 (2015). MSC: 39B82 39B52 PDF BibTeX XML Cite \textit{A. Bahyrycz} et al., Acta Math. Sci., Ser. B, Engl. Ed. 35, No. 6, 1349--1358 (2015; Zbl 1349.39043) Full Text: DOI OpenURL
Srisawat, C.; Kitisin, N.; Nakmahachalasint, P. On an alternative functional equation related to the Jensen’s functional equation. (English) Zbl 1342.39024 East-West J. Math. 17, No. 2, 185-193 (2015). MSC: 39B52 39B05 PDF BibTeX XML Cite \textit{C. Srisawat} et al., East-West J. Math. 17, No. 2, 185--193 (2015; Zbl 1342.39024) Full Text: Link OpenURL
Sadeghi, Ghadir A fixed point approach to stability of functional equations in modular spaces. (English) Zbl 1293.39019 Bull. Malays. Math. Sci. Soc. (2) 37, No. 2, 333-344 (2014). Reviewer: Mohammad Sal Moslehian (Mashhad) MSC: 39B82 39B52 PDF BibTeX XML Cite \textit{G. Sadeghi}, Bull. Malays. Math. Sci. Soc. (2) 37, No. 2, 333--344 (2014; Zbl 1293.39019) Full Text: Link OpenURL
Jin, Sun-Sook; Lee, Yang-Hi A fixed point approach to the stability of the generalized polynomial functional equation of degree 2. (English) Zbl 1277.39040 Commun. Korean Math. Soc. 28, No. 2, 269-283 (2013). Reviewer: Maryam Amyari (Mashhad) MSC: 39B82 39B52 PDF BibTeX XML Cite \textit{S.-S. Jin} and \textit{Y.-H. Lee}, Commun. Korean Math. Soc. 28, No. 2, 269--283 (2013; Zbl 1277.39040) Full Text: DOI Link OpenURL
Ciepliński, Krzysztof Stability of multi-Jensen mappings in non-Archimedean normed spaces. (English) Zbl 1248.39026 Rassias, Themistocles M. (ed.) et al., Functional equations in mathematical analysis. Dedicated to the memory of Stanisław Marcin Ulam on the occasion of the 100th anniversary of his birth. Berlin: Springer (ISBN 978-1-4614-0054-7/hbk; 978-1-4614-0055-4/ebook). Springer Optimization and Its Applications 52, 79-86 (2011). MSC: 39B82 39B52 46S10 PDF BibTeX XML Cite \textit{K. Ciepliński}, Springer Optim. Appl. 52, 79--86 (2011; Zbl 1248.39026) Full Text: DOI OpenURL
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 PDF BibTeX XML Cite \textit{C.-T. Lê} and \textit{T.-H. Thái}, Aequationes Math. 82, No. 3, 269--276 (2011; Zbl 1238.39009) Full Text: DOI arXiv OpenURL
Ger, Roman; Kominek, Zygfryd An interplay between Jensen’s and Pexider’s functional equations on semigroups. (English) Zbl 1240.39054 Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Comput. 35, 107-124 (2011). MSC: 39B52 20M14 PDF BibTeX XML Cite \textit{R. Ger} and \textit{Z. Kominek}, Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Comput. 35, 107--124 (2011; Zbl 1240.39054) OpenURL
Matkowski, Janusz Power means generated by some mean-value theorems. (English) Zbl 1229.26037 Proc. Am. Math. Soc. 139, No. 10, 3601-3610 (2011). Reviewer: Gheorghe Toader (Cluj-Napoca) MSC: 26E60 26A24 39B22 PDF BibTeX XML Cite \textit{J. Matkowski}, Proc. Am. Math. Soc. 139, No. 10, 3601--3610 (2011; Zbl 1229.26037) Full Text: DOI OpenURL
Jung, S.-M.; Moslehian, M. S.; Sahoo, P. K. Stability of a generalized Jensen equation on restricted domains. (English) Zbl 1219.39016 J. Math. Inequal. 4, No. 2, 191-206 (2010). Reviewer: Mihály Bessenyei (Debrecen) MSC: 39B82 39B52 39B55 PDF BibTeX XML Cite \textit{S. M. Jung} et al., J. Math. Inequal. 4, No. 2, 191--206 (2010; Zbl 1219.39016) Full Text: DOI arXiv Link OpenURL
Moslehian, M. S.; Srivastava, H. M. Jensen’s functional equation in multi-normed spaces. (English) Zbl 1204.39030 Taiwanese J. Math. 14, No. 2, 453-462 (2010). Reviewer: Jacek Chmieliński (Kraków) MSC: 39B82 39B52 PDF BibTeX XML Cite \textit{M. S. Moslehian} and \textit{H. M. Srivastava}, Taiwanese J. Math. 14, No. 2, 453--462 (2010; Zbl 1204.39030) Full Text: DOI OpenURL
Najati, Abbas; Rassias, Themistocles M. Stability of the pexiderized Cauchy and Jensen’s equations on restricted domains. (English) Zbl 1189.39030 Commun. Math. Anal. 8, No. 2, 125-135 (2010). MSC: 39B82 39B52 PDF BibTeX XML Cite \textit{A. Najati} and \textit{T. M. Rassias}, Commun. Math. Anal. 8, No. 2, 125--135 (2010; Zbl 1189.39030) Full Text: Euclid OpenURL
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 PDF BibTeX XML Cite \textit{Z. Moszner}, Aequationes Math. 77, No. 1--2, 33--88 (2009; Zbl 1207.39044) Full Text: DOI OpenURL
Luo, Zhi-guo; Luo, Yan Asymptotic stability for impulsive functional differential equations. (English) Zbl 1192.34095 Appl. Math. Mech., Engl. Ed. 30, No. 10, 1317-1324 (2009). Reviewer: Leonid Berezanski (Beer-Sheva) MSC: 34K45 34K20 PDF BibTeX XML Cite \textit{Z.-g. Luo} and \textit{Y. Luo}, Appl. Math. Mech., Engl. Ed. 30, No. 10, 1317--1324 (2009; Zbl 1192.34095) Full Text: DOI OpenURL
Zhang, Dongyan; Wang, Jian On the Hyers-Ulam-Rassias stability of Jensen’s equation. (English) Zbl 1170.39018 Bull. Korean Math. Soc. 46, No. 4, 645-656 (2009). Reviewer: Mohammad Sal Moslehian (Mashhad) MSC: 39B82 39B52 PDF BibTeX XML Cite \textit{D. Zhang} and \textit{J. Wang}, Bull. Korean Math. Soc. 46, No. 4, 645--656 (2009; Zbl 1170.39018) Full Text: DOI OpenURL
Luo, Zhiguo; Chen, Guoping New criteria for stability of impulsive functional differential equations. (Chinese. English summary) Zbl 1199.34389 J. Inn. Mong. Norm. Univ., Nat. Sci. 37, No. 6, 703-706, 713 (2008). MSC: 34K20 34K45 PDF BibTeX XML Cite \textit{Z. Luo} and \textit{G. Chen}, J. Inn. Mong. Norm. Univ., Nat. Sci. 37, No. 6, 703--706, 713 (2008; Zbl 1199.34389) OpenURL
Faĭziev, Valeriĭ A.; Sahoo, Prasanna K. On the stability of Jensen’s functional equation on groups. (English) Zbl 1119.39023 Proc. Indian Acad. Sci., Math. Sci. 117, No. 1, 31-48 (2007). Reviewer: Mohammad Sal Moslehian (Mashhad) MSC: 39B82 39B52 PDF BibTeX XML Cite \textit{V. A. Faĭziev} and \textit{P. K. Sahoo}, Proc. Indian Acad. Sci., Math. Sci. 117, No. 1, 31--48 (2007; Zbl 1119.39023) Full Text: DOI arXiv OpenURL
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 PDF BibTeX XML Cite \textit{M. S. Moslehian} and \textit{L. Székelyhidi}, Result. Math. 49, No. 3--4, 289--300 (2006; Zbl 1114.39010) Full Text: DOI arXiv OpenURL
Yang, De-Lian The quadratic functional equation on groups. (English) Zbl 1100.39028 Publ. Math. Debr. 66, No. 3-4, 327-348 (2005). Reviewer: Stefan Czerwik (Gliwice) MSC: 39B52 20F50 PDF BibTeX XML Cite \textit{D.-L. Yang}, Publ. Math. Debr. 66, No. 3--4, 327--348 (2005; Zbl 1100.39028) OpenURL
Yang, Dilian The stability of Jensen’s equation on amenable locally compact groups. (English) Zbl 1072.39027 Result. Math. 46, No. 3-4, 381-388 (2004). Reviewer: Jacek Chmielinski (Kraków) MSC: 39B82 39B52 22D05 PDF BibTeX XML Cite \textit{D. Yang}, Result. Math. 46, No. 3--4, 381--388 (2004; Zbl 1072.39027) Full Text: DOI OpenURL
Stetkær, Henrik On a variant of Wilson’s functional equation on groups. (English) Zbl 1061.39020 Aequationes Math. 68, No. 3, 160-176 (2004). Reviewer: Jacek Chmielinski (Kraków) MSC: 39B52 39B32 PDF BibTeX XML Cite \textit{H. Stetkær}, Aequationes Math. 68, No. 3, 160--176 (2004; Zbl 1061.39020) Full Text: DOI OpenURL
de Place Friis, Peter d’Alembert’s and Wilson’s equations on Lie groups. (English) Zbl 1060.39026 Aequationes Math. 67, No. 1-2, 12-25 (2004). Reviewer: Henrik Stetkaer (Aarhus) MSC: 39B52 PDF BibTeX XML Cite \textit{P. de Place Friis}, Aequationes Math. 67, No. 1--2, 12--25 (2004; Zbl 1060.39026) Full Text: DOI OpenURL
Vestfrid, Igor A. Linear approximation of approximately linear functions. (English) Zbl 1082.39027 Aequationes Math. 66, No. 1-2, 37-77 (2003). Reviewer: Soon-Mo Jung (Chochiwon) MSC: 39B82 52A05 PDF BibTeX XML Cite \textit{I. A. Vestfrid}, Aequationes Math. 66, No. 1--2, 37--77 (2003; Zbl 1082.39027) Full Text: DOI OpenURL
Cǎdariu, Liviu; Radu, Viorel Fixed points and the stability of Jensen’s functional equation. (English) Zbl 1043.39010 JIPAM, J. Inequal. Pure Appl. Math. 4, No. 1, Paper No. 4, 7 p. (2003). Reviewer: Jens Schwaiger (Graz) MSC: 39B82 39B52 PDF BibTeX XML Cite \textit{L. Cǎdariu} and \textit{V. Radu}, JIPAM, J. Inequal. Pure Appl. Math. 4, No. 1, Paper No. 4, 7 p. (2003; Zbl 1043.39010) Full Text: EuDML OpenURL
Jung, Soon-Mo; Kim, Byungbae Local stability of the additive functional equation and its applications. (English) Zbl 1017.39009 Int. J. Math. Math. Sci. 2003, No. 1, 15-26 (2003). Reviewer: Claudi Alsina (Barcelona) MSC: 39B82 39B52 39B55 PDF BibTeX XML Cite \textit{S.-M. Jung} and \textit{B. Kim}, Int. J. Math. Math. Sci. 2003, No. 1, 15--26 (2003; Zbl 1017.39009) Full Text: DOI EuDML OpenURL
Rassias, Themistocles M. On the stability of functional equations originated by a problem of Ulam. (English) Zbl 1084.39504 Mathematica 44(67), No. 1, 39-75 (2002). MSC: 39B82 39B52 39B62 PDF BibTeX XML Cite \textit{T. M. Rassias}, Mathematica 44(67), No. 1, 39--75 (2002; Zbl 1084.39504) OpenURL
Mukherjee, R. N. Stability of Jensen’s equations in two normed spaces. (English) Zbl 1195.39008 Matematiche 57, No. 1, 119-129 (2002). MSC: 39B82 39B52 PDF BibTeX XML Cite \textit{R. N. Mukherjee}, Matematiche 57, No. 1, 119--129 (2002; Zbl 1195.39008) OpenURL
Maksa, Gyula Jensen’s equation and bisymmetry. (English) Zbl 1017.39008 Publ. Math. Debr. 61, No. 3-4, 663-669 (2002). Reviewer: Henrik Stetkaer (Aarhus) MSC: 39B22 PDF BibTeX XML Cite \textit{G. Maksa}, Publ. Math. Debr. 61, No. 3--4, 663--669 (2002; Zbl 1017.39008) OpenURL
Park, Chun-Gil; Park, Won-Gil On the Jensen’s equation in Banach modules. (English) Zbl 1035.39017 Taiwanese J. Math. 6, No. 4, 523-532 (2002). Reviewer: Szymon Wasowicz (Bielsko-Biała) MSC: 39B82 39B52 39B22 PDF BibTeX XML Cite \textit{C.-G. Park} and \textit{W.-G. Park}, Taiwanese J. Math. 6, No. 4, 523--532 (2002; Zbl 1035.39017) Full Text: DOI OpenURL
Park, Chun-Gil Generalized Jensen’s equations in Banach modules over a unital \(C^*\)-algebra. (English) Zbl 1022.39027 Southwest J. Pure Appl. Math. 2002, No. 2, 52-63 (2002). Reviewer: Th.M.Rassias (Athens) MSC: 39B82 39B52 46L05 PDF BibTeX XML Cite \textit{C.-G. Park}, Southwest J. Pure Appl. Math. 2002, No. 2, 52--63 (2002; Zbl 1022.39027) Full Text: EuDML EMIS OpenURL
Park, Won-Gil The Jensen’s equation in Banach modules over a \(C^*\)-algebra. (English) Zbl 1023.39023 Nonlinear Funct. Anal. Appl. 7, No. 3, 405-412 (2002). Reviewer: Szymon Wasowicz (Bielsko-Biała) MSC: 39B82 39B52 46L05 PDF BibTeX XML Cite \textit{W.-G. Park}, Nonlinear Funct. Anal. Appl. 7, No. 3, 405--412 (2002; Zbl 1023.39023) OpenURL
Bae, Jae-Hyeong; Park, Won-Gil Generalized Jensen’s functional equations and approximate algebra homomorphisms. (English) Zbl 1017.39012 Bull. Korean Math. Soc. 39, No. 3, 401-410 (2002). Reviewer: Szymon Wasowicz (Bielsko-Biała) MSC: 39B82 46L05 47B48 39B52 PDF BibTeX XML Cite \textit{J.-H. Bae} and \textit{W.-G. Park}, Bull. Korean Math. Soc. 39, No. 3, 401--410 (2002; Zbl 1017.39012) Full Text: DOI OpenURL
Ng, Che Tat Jensen’s functional equation on groups. III. (English) Zbl 1004.39018 Aequationes Math. 62, No. 1-2, 143-159 (2001). Reviewer: Harkrishan L.Vasudeva (Chandigarh) MSC: 39B52 20E05 PDF BibTeX XML Cite \textit{C. T. Ng}, Aequationes Math. 62, No. 1--2, 143--159 (2001; Zbl 1004.39018) Full Text: DOI EuDML OpenURL
Trif, Tiberiu Hyers-Ulam-Rassias stability of a Jensen type functional equation. (English) Zbl 0964.39027 J. Math. Anal. Appl. 250, No. 2, 579-588 (2000). Reviewer: Prasanna Sahoo (Louisville) MSC: 39B82 39B52 PDF BibTeX XML Cite \textit{T. Trif}, J. Math. Anal. Appl. 250, No. 2, 579--588 (2000; Zbl 0964.39027) Full Text: DOI OpenURL
Rassias, Themistocles M. On the stability of functional equations and a problem of Ulam. (English) Zbl 0981.39014 Acta Appl. Math. 62, No. 1, 23-130 (2000). Reviewer: Szymon Wasowicz (Bielsko-Biala) MSC: 39B82 39B72 47H10 90C33 PDF BibTeX XML Cite \textit{T. M. Rassias}, Acta Appl. Math. 62, No. 1, 23--130 (2000; Zbl 0981.39014) Full Text: DOI OpenURL
Ng, Che Tat Jensen’s functional equation on groups. II. (English) Zbl 0938.39024 Aequationes Math. 58, No. 3, 311-320 (1999). Reviewer: H.L.Vasudeva (Chandigarh) MSC: 39B52 20E05 PDF BibTeX XML Cite \textit{C. T. Ng}, Aequationes Math. 58, No. 3, 311--320 (1999; Zbl 0938.39024) Full Text: DOI EuDML OpenURL
Szostok, Tomasz On a modified version of Jensen inequality. (English) Zbl 0934.39011 J. Inequal. Appl. 3, No. 4, 331-347 (1999). Reviewer: G.L.Forti (Milano) MSC: 39B62 39B22 PDF BibTeX XML Cite \textit{T. Szostok}, J. Inequal. Appl. 3, No. 4, 331--347 (1999; Zbl 0934.39011) Full Text: DOI EuDML OpenURL
Ring, Wolfgang; Schöpf, Peter; Schwaiger, Jens On functions continuous on certain classes of ‘thin’ sets. (English) Zbl 0905.26003 Publ. Math. Debr. 51, No. 3-4, 205-224 (1997). Reviewer: Zoltán Boros (Debrecen) MSC: 26B05 39B22 26B40 PDF BibTeX XML Cite \textit{W. Ring} et al., Publ. Math. Debr. 51, No. 3--4, 205--224 (1997; Zbl 0905.26003) OpenURL
Haruki, Hiroshi; Rassias, Themistocles M. New generalizations of Jensen’s functional equation. (English) Zbl 0965.39020 Proc. Am. Math. Soc. 123, No. 2, 495-503 (1995). MSC: 39B32 30D05 PDF BibTeX XML Cite \textit{H. Haruki} and \textit{T. M. Rassias}, Proc. Am. Math. Soc. 123, No. 2, 495--503 (1995; Zbl 0965.39020) Full Text: DOI OpenURL
Corovei, I. On semi-homomorphisms and Jensen’s equation. (English) Zbl 0881.39018 Mathematica 37(60), No. 1-2, 59-64 (1995). MSC: 39B52 PDF BibTeX XML Cite \textit{I. Corovei}, Mathematica 37(60), No. 1--2, 59--64 (1995; Zbl 0881.39018) OpenURL
Parnami, J. C.; Vasudeva, H. L. On Jensen’s functional equation. (English) Zbl 0755.39008 Aequationes Math. 43, No. 2-3, 211-218 (1992). Reviewer: J.Aczél (Waterloo / Ontario) MSC: 39B52 PDF BibTeX XML Cite \textit{J. C. Parnami} and \textit{H. L. Vasudeva}, Aequationes Math. 43, No. 2--3, 211--218 (1992; Zbl 0755.39008) Full Text: DOI EuDML OpenURL
Cholewa, Piotr W. A geometric view on \(\delta\)-convex functions. (English) Zbl 0798.39010 Grazer Math. Ber. 316, 29-36 (1992). Reviewer: D.H.Hyers MSC: 39B72 26A51 46A22 PDF BibTeX XML Cite \textit{P. W. Cholewa}, Grazer Math. Ber. 316, 29--36 (1992; Zbl 0798.39010) OpenURL
Castillo, Enrique; Ruiz-Cobo, Maria Reyes Functional equations and modelling in science and engineering. (English) Zbl 0801.39004 Pure and Applied Mathematics (New York, Marcel Dekker). 161. New York: Marcel Dekker, Inc.. xv, 328 p. (1992). Reviewer: B.Ebanks (Louisville) MSC: 39Bxx 00A71 39-02 39A10 00A06 74-XX 91Bxx PDF BibTeX XML Cite \textit{E. Castillo} and \textit{M. R. Ruiz-Cobo}, Functional equations and modelling in science and engineering. New York: Marcel Dekker, Inc. (1992; Zbl 0801.39004) OpenURL
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 PDF BibTeX XML Cite \textit{C. T. Ng}, Aequationes Math. 39, No. 1, 85--99 (1990; Zbl 0688.39007) Full Text: DOI EuDML OpenURL
Kominek, Zygfryd Convex functions in linear spaces. (English) Zbl 0699.46005 Pr. Nauk. Uniw. Śląsk. Katowicach 1087, 70 p. (1989). Reviewer: I.Raşa MSC: 46A55 46G05 26A51 PDF BibTeX XML OpenURL
Kostyrko, Pavel Generalized Jensen’s and Lobatchewski’s functional equations and their local forms. (English) Zbl 0685.39005 Rad. Mat. 5, No. 1, 5-13 (1989). Reviewer: N.Ghircoiaşiu MSC: 39B99 PDF BibTeX XML Cite \textit{P. Kostyrko}, Rad. Mat. 5, No. 1, 5--13 (1989; Zbl 0685.39005) OpenURL
Becker, L. C.; Burton, T. A.; Zhang, S. Functional differential equations and Jensen’s inequality. (English) Zbl 0639.34071 Dynamics of infinite dimensional systems, Proc. NATO Adv. Study Inst., Lisbon/Port. 1986, NATO ASI Ser., Ser. F 37, 31-38 (1987). Reviewer: L.C.Becker MSC: 34K20 PDF BibTeX XML OpenURL
Nikodem, Kazimierz On Jensen’s functional equation for set-valued functions. (English) Zbl 0628.39013 Rad. Mat. 3, 23-33 (1987). Reviewer: N.Ghircoiaşiu MSC: 39B52 54C60 PDF BibTeX XML Cite \textit{K. Nikodem}, Rad. Mat. 3, 23--33 (1987; Zbl 0628.39013) OpenURL
Kuczma, Marek An introduction to the theory of functional equations and inequalities. Cauchy’s equation and Jensen’s inequality. (English) Zbl 0555.39004 Prace Naukowe Uniwersytetu Śląskiego w Katowicach, 489. Uniwersytet Śląski. Warszawa-Kraków-Katowice: Państwowe Wydawnictwo Naukowe. 523 p. zl 460.00 (1985). Reviewer: B.Crstici MSC: 39B99 39B72 39-02 26A51 PDF BibTeX XML OpenURL