Geodesic

Sommaire du Fascicule no. 1

Connectivity in tl-groups
p. 1-7
Über gewisse Zerlegung einer Funktion $f(x)$ in $n$ trigonometrische Reihen; $n\geq 3$
p. 9-14
Existence theorems for a partial differential equation of the fourth order
p. 15-23
On the boundedness of a solution of a system of non-linear differential equations
p. 25-29
Verbandstheoretische Eigenschaften von Sprachen
p. 31-42
Solvability of infinite systems of linear equations
p. 43-44
Concerning a non-realizability of connected compact semi-separated closure operations by set-systems
p. 45-51
Polars on partially ordered groups
p. 53-62

Sommaire du Fascicule no. 2

On some properties of proximity in metric spaces
p. 63-66
Contractive mappings and periodically perturbed conservative systems
p. 67-73
Problèmes concernant différentes classes d'équations intégro-différentielles non linéaires aux opérateurs polyvibrants
p. 75-80
Об одном интегральном неравенстве
p. 81-85
On asymptotic properties of central dispersions of the $k$-th kind of $y''=q(t)y$, $k=1,2,3,4$
p. 87-98
On a class of variational problems defined by polynomial Lagrangians
p. 99-105
On homeomorphic topologies and equivalent set-systems
p. 107-115

Sommaire du Fascicule no. 3

The approximation of functions in the sense of Tchebychev. II
p. 117-141
Direct products of weak homomorphisms
p. 143-151
Monomorphisms in the categories of connected algebraic systems with strong homomorphisms
p. 153-168

Sommaire du Fascicule no. 4

Monotonicity theorems concerning differential equations $y''+f(t,y,y')=0$
p. 169-178
On the asymptotic properties of solutions of nonlinear systems
p. 179-190
Разложение линейных однородных дифференциальных операторов на сомножители 1-го порядка
p. 191-198
Fibrations et faisceaux dans une 2-catégorie
p. 199-208
On some operator defined on equational classes of algebras
p. 209-212
Autonomous automata and closures with the same endomorphism monoids
p. 213-223
On closure operators on monoids
p. 225-232