Geodesic

Issue no. 1 Table of Contents

Belyi function decompositions for the icosahedron of genus $4$
p. 3-30
Matrix structures in the form of finite direct sums and chains
p. 31-51
Weighted posets and the enriched monomial basis of QSym
p. 53-65
On linear transformations preserving cyclicity index of nonnegative matrices
p. 67-82
The contributions and legacy of an outstanding algebraist of Moscow State University, Professor Aleksandr Vasilievich Mikhalev
p. 83-86
Algebraic Lie algebras with finite grading
p. 87-102
The Gröbner–Shirshov bases method for vertex algebras
p. 103-122
On the conjecture of M. Janet for systems of partial differential equations
p. 123-131
Classification of commutative subalgebras of length $n-2$ in the algebra of $n\times n$ matrices over algebraically closed fields
p. 133-159
Constructions of coverings of simple groups using Euclidean lattices
p. 161-203
Universal-existential equivalence of linear groups
p. 205-212
The structure of topologically left Artinian rings in which all strictly principal left ideals are closed
p. 213-217
Rees congruence algebras in classes of unars and algebras with operators
p. 219-235
Determining fulfilment rate of public procurement contracts
p. 237-250
Criterion for the extendability of a unitary character on a normal subgroup of a product group to a pure one-dimensional pseudorepresentation of the group
p. 251-254

Issue no. 2 Table of Contents

Foreword
p. 3-5
For the 70th anniversary of George Shabat
p. 7-15
Belyi functions of the special weighted trees of $(2,3)$-type
p. 17-39
Fullerenes and Belyi functions
p. 41-61
On the conjecture of the Galois invariance of the Tutte polynomial for Grothendieck's dessins d'enfants
p. 63-77
Belyi pair for the orientation cover of $\overline{\mathcal M_{0,5}^{\mathbb R}}$
p. 79-101
Klein's ten “dessins d'enfants” of degree $11$: theme with variations
p. 103-175
On $3$-coloring of chains and propellers
p. 177-181
A dynamical system in the space of convex quadrangles
p. 183-188
On dessins d'enfants with equal supports
p. 189-196
Square-tiled surfaces and curves over number fields
p. 197-203