On the regularity of the solution map of the Euler–Poisson system
Martyn Russell DIXON, Leonid Andreevich KURDACHENKO, İgor Yakov SUBBOTIN
A metric invariant of Möbius transformations
Teerapong SUKSUMRAN, Oğuzhan DEMİREL
Sefa Anıl SEZER, İbrahim ÇANAK
On composition factors in modules over some group rings
Igor Yakov SUBBOTIN, Martyn Russell DIXON, Leonid Andreevich KURDACHENKO