On infinite groups in which all abelian subgroups are locally cyclic Costantino DeliziaChiara Nicotera OriginalPaper Open access 06 July 2021 Pages: 397 - 406
Well-posedness for hyperbolic equations whose coefficients lose regularity at one point Daniele Del SantoMartino Prizzi OriginalPaper 11 November 2021 Pages: 407 - 417
Existence and Ulam-Hyers stability of positive solutions for a nonlinear model for the Antarctic Circumpolar Current Michal FečkanQixiang LiJinRong Wang OriginalPaper 04 September 2021 Pages: 419 - 434
A note on the solution map for the periodic multi-dimensional Camassa–Holm-type system Ying FuHaiquan Wang OriginalPaper 24 August 2021 Pages: 435 - 461
Large sieve estimate for multivariate polynomial moduli and applications Karin HalupczokMarc Munsch OriginalPaper 08 November 2021 Pages: 463 - 478
On the local well–posedness of the two component b-family of equations Hasan Inci OriginalPaper 18 July 2021 Pages: 479 - 492
Pseudocompact \(\varDelta \)-spaces are often scattered A. LeidermanV. V. Tkachuk OriginalPaper 24 September 2021 Pages: 493 - 503
On a bound of Cocke and Venkataraman Benjamin SambalePhilipp Wellmann OriginalPaper Open access 01 July 2021 Pages: 505 - 515
Constant vorticity water flows in the modified equatorial \(\beta \)-plane approximation Fahe MiaoMichal FečkanJinRong Wang OriginalPaper 22 May 2021 Pages: 517 - 527
Notes on the paper “A note on pronormal p-subgroups of finite groups” Suli LiuHaoran Yu OriginalPaper 21 May 2021 Pages: 529 - 530
