2021
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
Functional analysis behind a family of multidimensional continued fractions. Part II
Ilya Amburg and Thomas Garrity
When are Ore extensions over nil rings Brown—McCoy radicals?
Wagner Cortes and Edilson Soares Miranda
Some finite $p$-groups whose central automorphisms fixing the center element-wise are all inner
Hemant Kalra, Deepak Gumber and Mahak Sharma
Uniqueness theorem for holomorphic curves on the disc
Liu Yang
Weighted Hardy and Carleson measure spaces estimates for fractional integrations
Jian Tan
Almost sure central limit theorems for sums of a randomly chosen multi-index field
Agnieszka Monika Gdula and Andrzej Krajka
Expressions of Schur multiple zeta-functions of anti-hook type by zeta-functions of root systems
Kohji Matsumoto and Maki Nakasuji
Characterization of expansive polynomials by special determinants
M. János Uray
On $k$-generalized Fibonacci numbers with negative indices
Attila Pethő
Finsler spaces of $(\alpha,\beta)$ type and semi-C-reducibility
Mike Crampin
Sharp bounds for the number of integral points on $y^2=x^3\pm 2tx^2+tpx$
Nuan Lin, P. Gary Walsh and Pingzhi Yuan
On Salem numbers which are Mahler measures of nonreciprocal $2$-Pisot numbers
Toufik Zaïmi
On partitions of $\mathbb{Z}_m$ with the same representation function
Cui-Fang Sun and Meng-Chi Xiong
On products of consecutive integers
Wu-Xia Ma and Yong-Gao Chen
Three supercongruences for Apéry numbers and Franel numbers
Yong Zhang
Rational points in geometric progression on the unit circle
Gamze Savaş Çelik, Mohammad Sadek and Gökhan Soydan
A class of strongly nonlinear integral equations on the space of vector measures and their optimal control
Nasir Uddin Ahmed
Arithmetics in number systems with cubic base
Magdaléna Tinková
Cohomogeneity one conformal actions on the $3$-sphere and the three-dimensional Euclidean space
Parviz Ahmadi and Masoud Hassani
Constrained triangulations, volumes of polytopes, and unit equations
Michael Kerber, Robert Tichy and Mario Weitzer
Extension of the best polynomial approximation operator in Musielak—Orlicz spaces
Tengiz Kopaliani, Nino Samashvili and Shalva Zviadadze
Flat manifolds with homogeneous holonomy representation
Rafał Lutowski
On cyclic quadrilaterals in Euclidean and hyperbolic geometries
Gendi Wang, Matti Vuorinen and Xiaohui Zhang
Wintgen inequality for surfaces in Hessian manifolds
Leila Samereh and Ion Mihai
Almost-additive and almost-multiplicative functions with regularity properties
Jean-Marie De Koninck, Imre Kátai and Bui Minh Phong
Computing singularities of the spectra of representation rings of finite groups
André Gimenez Bueno, Renato Vidal Martins, Edney Oliveira and Csaba Schneider
Surgeries of the Gieseking hyperbolic ideal simplex manifold
Emil Molnár, István Prok and Jenő Szirmai
On additive functions with additional derivation properties
Richárd Grünwald and Zsolt Páles
Approximation by matrix transform of Vilenkin—Fourier series
István Blahota and Károly Nagy
The reciprocal character of the conjugation action
Benjamin Sambale
Spectral analysis and synthesis on an infinite hypergroup join
László Székelyhidi
Torsion groups of Mordell curves over cubic and sextic fields
Pallab Kanti Dey and Bidisha Roy
Star versions of Menger basis covering property and Menger measure zero spaces
Manoj Bhardwaj
Rational points with large denominator on Erdős—Selfridge superelliptic curves
N. Saradha
Geometric properties near singular points of surfaces given by certain representation formulae
Yoshiki Matsushita, Takuya Nakashima and Keisuke Teramoto
Local derivations of generalized matrix algebras
Lei Liu
Weighted set sharing and uniqueness of meromorphic functions
Pulak Sahoo and Samar Halder
Hilbert quasimodular forms and Hilbert Jacobi-like forms
Min Ho Lee
D'Alembert's functional equation on monoids with both an endomorphism and an anti-endomorphism
Mohamed Ayoubi, Driss Zeglami and Aziz Mouzoun
Solubility of additive sextic forms over $\mathbb{Q}_2(\sqrt{-1})$ and $\mathbb{Q}_2(\sqrt{-5})$
Drew Duncan and David B. Leep
Four-generated direct powers of partition lattices and authentication
Gábor Czédli
Properness of moment maps for representations of quivers
Pradeep Das
On a problem of Erdős and Graham
Min Tang and Quan-Hui Yang
Higher-order homogeneous functions: classification
Demeter Krupka
Some functional lower bounds for Fejér's sine polynomial
Tuo Yeong Lee and Jing Ren Soh