Alabiso, Carlo; Weiss, Ittay A primer on Hilbert space theory. Linear spaces, topological spaces, metric spaces, normed spaces, and topological groups. 2nd edition. (English) Zbl 1457.46001 UNITEXT for Physics. Cham: Springer (ISBN 978-3-030-67416-8/hbk; 978-3-030-67419-9/pbk; 978-3-030-67417-5/ebook). xxii, 328 p. (2021). MSC: 46-01 46C05 00A06 54-01 PDFBibTeX XMLCite \textit{C. Alabiso} and \textit{I. Weiss}, A primer on Hilbert space theory. Linear spaces, topological spaces, metric spaces, normed spaces, and topological groups. 2nd edition. Cham: Springer (2021; Zbl 1457.46001) Full Text: DOI
Hejmej, Beata Stability of functional equations in dislocated quasi-metric spaces. (English) Zbl 1497.39021 Ann. Math. Sil. 32, 215-225 (2018). MSC: 39B82 39B52 54E50 PDFBibTeX XMLCite \textit{B. Hejmej}, Ann. Math. Sil. 32, 215--225 (2018; Zbl 1497.39021) Full Text: DOI
Schwaiger, Jens On the construction of the field of reals by means of functional equations and their stability and related topics. (English) Zbl 1387.39030 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, 275-295 (2017). MSC: 39B82 46B99 54D35 PDFBibTeX XMLCite \textit{J. Schwaiger}, Springer Optim. Appl. 124, 275--295 (2017; Zbl 1387.39030) Full Text: DOI
Rébillé, Yann An axiomatization of continuous quasilinear utility. (English) Zbl 1398.91264 Decis. Econ. Finance 40, No. 1-2, 301-315 (2017). MSC: 91B16 91B08 54H99 PDFBibTeX XMLCite \textit{Y. Rébillé}, Decis. Econ. Finance 40, No. 1--2, 301--315 (2017; Zbl 1398.91264) Full Text: DOI
Sikorska, Justyna Set-valued orthogonal additivity. (English) Zbl 1328.39039 Set-Valued Var. Anal. 23, No. 3, 547-557 (2015). Reviewer: Krzysztof Ciepliński (Kraków) MSC: 39B55 39B52 54C60 54C65 PDFBibTeX XMLCite \textit{J. Sikorska}, Set-Valued Var. Anal. 23, No. 3, 547--557 (2015; Zbl 1328.39039) Full Text: DOI
Alabiso, Carlo; Weiss, Ittay A primer on Hilbert space theory. Linear spaces, topological spaces, metric spaces, normed spaces, and topological groups. (English) Zbl 1317.46001 Unitext for Physics. Cham: Springer (ISBN 978-3-319-03712-7/hbk; 978-3-319-03713-4/ebook). xvii, 255 p. (2015). Reviewer: Mohammad Sal Moslehian (Karlstad) MSC: 46-01 46C05 00A06 54-01 PDFBibTeX XMLCite \textit{C. Alabiso} and \textit{I. Weiss}, A primer on Hilbert space theory. Linear spaces, topological spaces, metric spaces, normed spaces, and topological groups. Cham: Springer (2015; Zbl 1317.46001) Full Text: DOI
Lee, Jung Rye; Park, Choonkil; Shin, Dong Yun Random derivations on random normed algebras. (English) Zbl 1386.39045 J. Comput. Anal. Appl. 16, No. 1, 104-111 (2014). MSC: 39B52 47H10 37H10 60H25 39B72 47B47 17B40 54E70 PDFBibTeX XMLCite \textit{J. R. Lee} et al., J. Comput. Anal. Appl. 16, No. 1, 104--111 (2014; Zbl 1386.39045)
Zaharia, Claudia; Miheţ, Dorel On a problem of Schwaiger in random normed spaces. (English) Zbl 1410.54036 Aequationes Math. 86, No. 1-2, 99-105 (2013). MSC: 54E70 39B52 PDFBibTeX XMLCite \textit{C. Zaharia} and \textit{D. Miheţ}, Aequationes Math. 86, No. 1--2, 99--105 (2013; Zbl 1410.54036) Full Text: DOI
Draga, Szymon Regularity of the graphs of injective additive functions. (English) Zbl 1275.39010 Aequationes Math. 85, No. 3, 379-386 (2013). Reviewer: Andrzej Smajdor (Kraków) MSC: 39B52 28A05 28A20 54E52 PDFBibTeX XMLCite \textit{S. Draga}, Aequationes Math. 85, No. 3, 379--386 (2013; Zbl 1275.39010) Full Text: DOI
Kenary, Hassan Azadi; Rezaei, Hamid; Gheisari, Yousof; Park, Choonkil On the stability of set-valued functional equations with the fixed point alternative. (English) Zbl 1283.39010 Fixed Point Theory Appl. 2012, Paper No. 81, 17 p. (2012). Reviewer: Stefan Czerwik (Gliwice) MSC: 39B82 39B52 54H25 54C60 PDFBibTeX XMLCite \textit{H. A. Kenary} et al., Fixed Point Theory Appl. 2012, Paper No. 81, 17 p. (2012; Zbl 1283.39010) Full Text: DOI
Eshaghi Gordji, M.; Bavand Savadkouhi, M.; Bidkham, M. Stability of a mixed type additive and quadratic functional equation in non-Archimedean spaces. (English) Zbl 1198.39037 J. Comput. Anal. Appl. 12, No. 2, 454-462 (2010). Reviewer: Themistocles M. Rassias (Athens) MSC: 39B82 39B52 46S40 54E40 PDFBibTeX XMLCite \textit{M. Eshaghi Gordji} et al., J. Comput. Anal. Appl. 12, No. 2, 454--462 (2010; Zbl 1198.39037)
Jung, Soon-Mo; Rassias, John Michael A fixed point approach to the stability of a functional equation of the spiral of Theodorus. (English) Zbl 1149.39023 Fixed Point Theory Appl. 2008, Article ID 945010, 7 p. (2008). MSC: 39B82 39B52 54E35 54H25 PDFBibTeX XMLCite \textit{S.-M. Jung} and \textit{J. M. Rassias}, Fixed Point Theory Appl. 2008, Article ID 945010, 7 p. (2008; Zbl 1149.39023) Full Text: DOI EuDML
Jung, Soon-Mo; Lee, Zoon-Hee A fixed point approach to the stability of quadratic functional equation with involution. (English) Zbl 1149.39022 Fixed Point Theory Appl. 2008, Article ID 732086, 11 p. (2008). MSC: 39B82 54E35 39B52 54H25 PDFBibTeX XMLCite \textit{S.-M. Jung} and \textit{Z.-H. Lee}, Fixed Point Theory Appl. 2008, Article ID 732086, 11 p. (2008; Zbl 1149.39022) Full Text: DOI EuDML
Badora, Roman; Ger, Roman; Páles, Zsolt Additive selections and the stability of the Cauchy functional equation. (English) Zbl 1037.39008 ANZIAM J. 44, No. 3, 323-337 (2003). Reviewer: Szymon Wasowicz (Bielsko-Biała) MSC: 39B62 39B52 54C60 54C65 39B72 39B82 PDFBibTeX XMLCite \textit{R. Badora} et al., ANZIAM J. 44, No. 3, 323--337 (2003; Zbl 1037.39008) Full Text: DOI
Poschadel, Norbert On distance dependent maps on the circle and on the real line. (Über die abstandsverträglichen Abbildungen auf dem Kreis und auf der reellen Geraden.) (German) Zbl 1035.51012 Math. Semesterber. 49, No. 1, 45-54 (2002). Reviewer: Johann Linhart (Salzburg) MSC: 51K99 39B22 54E40 81R05 PDFBibTeX XMLCite \textit{N. Poschadel}, Math. Semesterber. 49, No. 1, 45--54 (2002; Zbl 1035.51012) Full Text: DOI
Popa, Dorian Additive selections of \((\alpha,\beta)\)-subadditive set valued maps. (English) Zbl 1039.28013 Glas. Mat., III. Ser. 36, No. 1, 11-16 (2001). MSC: 28B20 54C65 39B62 PDFBibTeX XMLCite \textit{D. Popa}, Glas. Mat., III. Ser. 36, No. 1, 11--16 (2001; Zbl 1039.28013)
Riedel, Thomas Cauchy’s equation on \(\Delta{}^ +\): Further results. (English) Zbl 0765.39006 Aequationes Math. 44, No. 2-3, 236-248 (1992). Reviewer: J.Aczél (Waterloo / Ontario) MSC: 39B22 39B52 60E10 54E35 PDFBibTeX XMLCite \textit{T. Riedel}, Aequationes Math. 44, No. 2--3, 236--248 (1992; Zbl 0765.39006) Full Text: DOI EuDML
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 PDFBibTeX XMLCite \textit{K. Nikodem}, Rad. Mat. 3, 23--33 (1987; Zbl 0628.39013)
Schroth, Peter Note on initial topologies on rational vector spaces induced by realvalued linear mappings. (English) Zbl 0571.39004 Aequationes Math. 28, 252-254 (1985). Reviewer: K.Baron MSC: 39B99 54A10 39B52 20K20 PDFBibTeX XMLCite \textit{P. Schroth}, Aequationes Math. 28, 252--254 (1985; Zbl 0571.39004) Full Text: DOI EuDML
Jarai, A. Regularity properties of functional equations. (English) Zbl 0517.39009 Aequationes Math. 25, 52-66 (1982). MSC: 39B52 28A20 39B99 54C50 PDFBibTeX XMLCite \textit{A. Jarai}, Aequationes Math. 25, 52--66 (1982; Zbl 0517.39009) Full Text: DOI EuDML
Sander, Wolfgang Ein Beitrag zur Baire-Kategorie-Theorie. (German) Zbl 0509.54028 Manuscr. Math. 34, 71-83 (1981). MSC: 54E52 39B52 28C15 PDFBibTeX XMLCite \textit{W. Sander}, Manuscr. Math. 34, 71--83 (1981; Zbl 0509.54028) Full Text: DOI EuDML