Geodesic

Sommaire du Fascicule no. 1

Preface
p. 3-4
Symmetry constraints for real dispersionless Veselov--Novikov equation
p. 5-15
Null Lagrangians for nematic elastomers
p. 17-28
On construction of symmetries from integrals of hyperbolic partial differential systems
p. 29-37
Decompositions of the loop algebra over $\mathrm{so}(4)$ and integrable models of the chiral equation type
p. 39-47
Electromagnetic waves that admit translations along the null vector
p. 49-56
Methods of geometry of differential equations in analysis of integrable models of field theory
p. 57-165
Exotic Galileian group in field theory
p. 167-173
The Boussinesq equation and Miura type transformations
p. 175-182
Classes of Maxwell spaces that admit subgroups of the Poincar\'e group
p. 183-237
A~new hyperbolic equation possessing a~zero-curvature representation
p. 239-241
On the classification of conditionally integrable evolution systems in $(1+1)$ dimensions
p. 243-253
Finite-type integrable geometric structures
p. 255-269

Sommaire du Fascicule no. 2

Linear preservers of extremes of rank inequalities over semirings: term-rank and zero-term-rank
p. 3-21
Automorphisms of endomorphism rings of a~class of almost completely decomposable groups
p. 23-50
Elementary equivalence of categories of modules over rings, endomorphism rings, and automorphism groups of modules
p. 51-134
Elementary equivalence of endomorphism rings of Abelian $p$-groups
p. 135-224
On pureness in Abelian groups
p. 225-238

Sommaire du Fascicule no. 3

Quasicrystals and their symmetries
p. 3-10
A~topological prime quasiradical
p. 11-22
Standard bases concordant with the norm and computations in ideals and polylinear recurring sequences
p. 23-71
A~new characterization of Riemann-integrable functions
p. 73-83
On Rees weakly projective right acts
p. 85-96
Weakly primitive superrings
p. 97-142
Sets of Hilbert series and their applications
p. 143-156
Varieties of two-step solvable algebras of type $(\gamma,\delta)$
p. 157-180
Problems in algebra inspired by universal algebraic geometry
p. 181-197
Relatively free products of Magnus groups
p. 199-213
Topological Krull dimension
p. 215-230
Geometric regularity of direct-sum decompositions in some classes of modules
p. 231-244
An interlacing theorem for matrices whose graph is a~given tree
p. 245-254

Sommaire du Fascicule no. 4

Rank permutability and additive operators preserving related rank product conditions
p. 3-14
Topological prime radical of a~group
p. 15-22
On one variety of alternative algebras
p. 23-34
The Riemann--Roch theorem on surfaces with log terminal singularities
p. 35-42
On the problem of classification of finite groups associated to multiplicative $\eta$-products
p. 43-64
Projective resolutions and Yoneda algebras for algebras of dihedral type: the family $D(3\mathcal Q)$
p. 65-89
On noncommutative Gr\"obner bases over rings
p. 91-96
Free Malcev superalgebra on one odd generator and related superalgebras
p. 97-106
Model-theoretic properties of regular polygons
p. 107-157
Object-oriented representation of hierarchical graphs
p. 159-170
On the implicit conditional operations defined on pseudouniversal classes
p. 171-182
Fano direct products as rationally connected fibrations
p. 183-206
An upper bound for the index of multiplicities in the cocharacters of PI-algebras
p. 207-223
H\"older rigidity for matrices
p. 225-233
On embeddings of some quotient algebras of free sums of Lie algebras
p. 235-241