Functional equations associated with triangle geometry Clark Kimberling Research Papers Pages: 127 - 152
Regular hexagons in normed spaces and a theorem of Walter Benz Detlef Laugwitz Research Papers Pages: 163 - 166
On two conditional forms of the equation∥f(x + y)∥ = ∥f(x) + f(y)∥ Fulvia Skof Research Papers Pages: 167 - 178
Convexity-like inequalities for averages in a convex set Mihai DragomirescuConstantin Ivan Research Papers Pages: 179 - 194
Sur les solutions globales de l'équation des cocycles Mohamed Hmissi Research Papers Pages: 195 - 206
On the structure of homothetic functions Juan Carlos CandealEsteban Indurain Research Papers Pages: 207 - 218
On a certain identity satisfied by a derivation and an arbitrary additive mapping M. BrešarJ. ŠkarabotJ. Vukman Research Papers Pages: 219 - 231
On the determination of strictt-norms on some diagonal segments J. P. BézivinM. S. Tomás Research Papers Pages: 239 - 245
On a functional equation of Swiatak on groups J. K. ChungZhong JukangP. K. Sahoo Research Papers Pages: 246 - 266
On the “bang-bang” principle for nonlinear evolution inclusions N. S. Papageorgiou Research Papers Pages: 267 - 280
On products of additive functions (a third approach) Franz Halter-Koch Research Papers Pages: 281 - 284
On the stability of a system of functional equations characterizing generalized hyperbolic and trigonometric functions Wolfgang Förg-RobJens Schwaiger Research Papers Pages: 285 - 296
Über die Funktionalungleichungf(x + y) + f(xy) ⩾ f(x) + f(y) + f(x)f(y) Claus Hammer Research Papers Pages: 297 - 299
On the mutual noncompatibility of homogeneous analytic non-power means Marcin E. Kuczma Research Papers Pages: 300 - 321
On the equality condition in Hölder's and Minkowski's inequalities Janusz MatkowskiJürg Rätz Summaries Pages: 322 - 322
Functional equations and nowhere differentiable functions Roland Girgensohn Summaries Pages: 322 - 323
