2021/98/1-2
A Menon—Sury-type identity for arithmetic functions on $\mathbb{F}_q[T]$
Man Chen and Tianfang Qi
Ptolemy constant and uniformity
Eero Harmaala and Riku Klén
Functional analysis behind a family of multidimensional continued fractions. Part I
Ilya Amburg and Thomas Garrity
On the algorithmic complexity of some numeration-related problems
Dávid Bóka, Péter Burcsi and M. János Uray
Recollements associated to cotorsion pairs over upper triangular matrix rings
Rongmin Zhu, Yeyang Peng and Nanqing Ding
On Lebesgue decomposition of $p$-adic distributions
Marian Vâjâitu
Difference of Cantor sets and frequencies in Thue—Morse type sequences
Yi Cai and Vilmos Komornik
On sums of Fibonacci numbers with few binary digits
Ingrid Vukusic and Volker Ziegler
Factorization graphs of finite groups
Mohammad Farrokhi D. G. and Ali Azimi
Outer inverses, minus partial orders, and triplet invariance
Tsiu-Kwen Lee and Jheng-Huei Lin
On the variations of completely multiplicative functions at consecutive arguments
Jean-Marie De Koninck, Imre Kátai and Bui Minh Phong
A sharp trigonometric double inequality
Yongbeom Kim, Tuo Yeong Lee, Vengat S., Hui Xiang Sim and Jay Kin Heng Tai
On a variant of the Brocard—Ramanujan equation and an application
Jhon J. Bravo, Maribel Díaz and José L. Ramírez
A note on monolithic Brauer characters
Xiaoyou Chen and Ni Du