Data wydania | Tytuł | Autor |
2016 | A singular behaviour of a set-valued approximate orthogonal additivity | Sikorska, Justyna |
2020 | Alienation and the Stability Problem | Sikorska, Justyna |
2016 | Alienation of the logarithmic and exponential functional equations | Kominek, Zygfryd; Sikorska, Justyna |
2013 | Hyperstability of the Fréchet Equation and a Characterization of Inner Product Spaces | Bahyrycz, Anna; Brzdęk, Janusz; Piszczek, Magdalena; Sikorska, Justyna |
2019 | On a class of abstract convex cone valued functional equations | Sikorska, Justyna |
2021 | On a general bilinear functional equation | Bahyrycz, Anna; Sikorska, Justyna |
2019 | On a Method of Solving Some Functional Equations for Set-Valued Functions | Sikorska, Justyna |
2020 | On a ρ-Orthogonally Additive Mappings | Chmieliński, Jacek; Sikorska, Justyna; Wójcik, Paweł |
2018 | On an equation of Sophie Germain | Łukasik, Radosław; Sikorska, Justyna; Szostok, Tomasz |
2021 | On Stability of a General Bilinear Functional Equation | Bahyrycz, Anna; Sikorska, Justyna |
1997 | On the Cauchy equation on spheres | Ger, Roman; Sikorska, Justyna |
2000 | Orthogonal stability of the Cauchy equation on balls | Sikorska, Justyna |
2004 | Orthogonal stability of the Cauchy functional equation on balls in normed linear spaces | Sikorska, Justyna |
2015 | Orthogonalities and functional equations | Sikorska, Justyna |
2015 | Set-valued orthogonal additivity | Sikorska, Justyna |