2020/96/3-4
Additive maps preserving semi-Fredholm operators with bounded ascent on $\mathcal{B}(\mathcal{X})$
Weijuan Shi and Guoxing Ji
Finite groups whose conjugacy class sizes of primary and biprimary elements are Hall numbers
Changguo Shao and Qinhui Jiang
A two-dimensional Gauss—Kuzmin theorem for $N$-continued fraction expansions
Gabriela Ileana Sebe and Dan Lascu
Congruences involving binomial coefficients and Apéry-like numbers
Zhi-Hong Sun
Multilinear strong maximal operators on weighted mixed norm spaces
Juan Zhang and Qingying Xue
Complete surfaces with zero curvatures in conformally flat spaces
Kellcio Araujo, Armando Corro, Romildo Pina and Marcelo Souza
A sparse domination for the Marcinkiewicz integral with rough kernel and applications
Xiangxing Tao and Guoen Hu
Strong arithmetic property of certain Stern polynomials
Maciej Ulas
A remark on an algorithm for testing Pisot polynomials
Toufik Zaïmi
Core-EP inverse in rings with involution
Dijana Mosić
A functional bound for Young's cosine polynomial. II.
Jolie Zhi Yi Fong, Tuo Yeong Lee, Raghavendra Narayan Rao and Pei Xian Wong
Finite non-nilpotent groups with two conjugacy classes of non-normal non-cyclic subgroups
Rolf Brandl, Zahra Rezazadeh and Bijan Taeri
Maximal normal subgroups of the automorphism groups of free nilpotent groups
Vladimir A. Tolstykh
Menon-type identities again: A note on a paper by Li, Kim and Qiao
Pentti Haukkanen and László Tóth
On $k$-antichains in the unit $n$-cube
Christos Pelekis and Václav Vlasák
On clp-paracompact spaces
Francisco Gallego Lupiáñez