The spectrum of ultraproducts of finite cardinals for an ultrafilter S. Shelah OriginalPaper 26 June 2018 Pages: 201 - 220
On a generalization of the concept of S-permutable subgroup of a finite group V. I. Murashka OriginalPaper 17 March 2018 Pages: 221 - 227
On abstract and almost-abstract density topologies J. HejdukA. Loranty OriginalPaper 25 May 2018 Pages: 228 - 240
Solution of a problem of Z. Daróczy, J. Jarczyk and W. Jarczyk and generalization of a theorem of R. Ger and T. Kochane M. Balcerowski OriginalPaper 24 April 2018 Pages: 241 - 247
Asymptotic aspect of Drygas, quadratic and Jensen functional equations in metric abelian groups B. KhosraviM. B. MoghimiA. Najati OriginalPaper 17 March 2018 Pages: 248 - 265
Parallel covering of isosceles triangles with squares M. LuZ. Su OriginalPaper 05 July 2018 Pages: 266 - 297
On the existence of periodic motions of the excited inverted pendulum by elementary methods L. CsizmadiaL. Hatvani OriginalPaper 25 May 2018 Pages: 298 - 312
Partitions of the set of natural numbers and symplectic homology I. Uljarevic OriginalPaper 17 March 2018 Pages: 313 - 323
Komlós properties in Banach lattices E. Y. EmelyanovN. Erkurşun-ÖzcanS. G. Gorokhova OriginalPaper 26 June 2018 Pages: 324 - 331
Representing an isotone map between two bounded ordered sets by principal lattice congruences G. Czédli OriginalPaper 26 June 2018 Pages: 332 - 354
Inequalities between Dirichlet and Neumann eigenvalues of vibrating strings M.-J. Huang OriginalPaper 24 April 2018 Pages: 355 - 361
Rational approximation to surfaces defined by polynomials in one variable J. Schleischitz OriginalPaper 25 May 2018 Pages: 362 - 375
Weak square and stationary reflection G. FuchsA. Rinot OriginalPaper 22 January 2018 Pages: 393 - 405
Metric discrepancy results for geometric progressions with small ratios K. FukuyamaS. SakaguchiM. Tscheckl OriginalPaper 17 March 2018 Pages: 416 - 430
An improved upper bound for the size of a sunflower-free family G. Hegedűs OriginalPaper 22 February 2018 Pages: 431 - 438
The p-Gelfand–Phillips property in spaces of operators and Dunford–Pettis like sets I. Ghenciu OriginalPaper 25 May 2018 Pages: 439 - 457
A definitive improvement of a game-theoretic bound and the long tightness game L. F. AurichiA. Bella OriginalPaper 26 June 2018 Pages: 458 - 465
Some new results on orthogonal polynomials for Laguerre type exponential weights G. MastroianniI. NotarangeloP. Vértesi OriginalPaper 26 May 2018 Pages: 466 - 478
An analogue of Sylvester’s four-point problem on the sphere H. MaeharaH. Martini OriginalPaper 17 March 2018 Pages: 479 - 488
On n-\({\sigma}\)-embedded subgroups of finite groups C. CaoM. T. HussainL. Zhang OriginalPaper 24 April 2018 Pages: 502 - 517
Second and third order moment inequalities for probability distributions S. Simić OriginalPaper 26 June 2018 Pages: 518 - 532
