Bisymmetric and quasitrivial operations: characterizations and enumerations Jimmy Devillet OriginalPaper 24 April 2019 Pages: 501 - 526
An extension of the Hermite–Hadamard inequality for convex and s-convex functions Péter Kórus OriginalPaper Open access 22 March 2019 Pages: 527 - 534
Functional equations for exponential polynomials Żywilla FechnerLászló Székelyhidi OriginalPaper Open access 11 August 2018 Pages: 535 - 545
A new orthogonality and angle in a normed space M. NurH. Gunawan OriginalPaper 14 July 2018 Pages: 547 - 555
On a functional equation characterizing linear similarities Paweł Wójcik OriginalPaper Open access 17 October 2018 Pages: 557 - 561
Sur certaines équations fonctionnelles approchées, liées à la transformation de Gauss Michel BalazardBruno Martin OriginalPaper 16 August 2018 Pages: 563 - 585
Necessary and sufficient conditions for nonlinear matrix identities to always hold Bo JiangYongge Tian OriginalPaper 09 November 2018 Pages: 587 - 600
Compositions with a fixed number of inversions A. KnopfmacherM. E. MaysS. Wagner OriginalPaper 10 May 2018 Pages: 601 - 617
An inequality for the length of isoptic chords of convex bodies Jesús Jerónimo-CastroCarlos Yee-Romero OriginalPaper 09 November 2018 Pages: 619 - 628
Derivations and Leibniz differences on rings Bruce Ebanks OriginalPaper 08 September 2018 Pages: 629 - 640
The images of orthogonally additive mappings from inner product spaces to groups Imke Toborg OriginalPaper 18 July 2018 Pages: 641 - 650
