Geodesic

Sommaire du Fascicule no. 1

On semimodular lattices of generating systems
p. 1-8
Inverse problem of the classical calculus of variations
p. 9-14
An extension of a theorem of Abian
p. 15-18
Functions of the form $\sum_{i=1} ^N f_i(x) g_i(t)$ in $L_2$
p. 19-22
On the zeros of a function related to Bessel functions
p. 23-34
Oscillations of superlinear differential equations with deviating arguments
p. 35-48
Über Isochrone durch zwei lineare Differentialgleichungen zweiter Ordnung geregelte Schwingungen von Materiellen Punkten
p. 49-56

Sommaire du Fascicule no. 2

Über Mengen von Derivationen. II
p. 57-63
On a “Liapunov like” function for an equation $\dot z=f(t,z)$ with a complex-valued function $f$
p. 65-76
Some results on the oscillatory and asymptotic behavior of solutions of nonlinear delay differential inequalities
p. 77-87
A note on systems of ideals
p. 89-90
Arbitrarily traceable Eulerian graph has the Hamiltonian square
p. 91-93
The second order differential equation with an oscillatory coefficient
p. 95-100
Uniform normality of topological groups and $l$-groups
p. 101-109

Sommaire du Fascicule no. 3

Association schemes. II
p. 111-120
Iteration groups generated by $C^n$ functions
p. 121-127
A functional characterization of parallelogram spaces
p. 129-132
The Riccati differential equation with complex-valued coefficients and application to the equation $x''+P(t)x'+Q(t)x=0$
p. 133-143
Distinguishing subsets in lattices
p. 145-149
Acceptors and generalized $lc$-grammars
p. 151-162
A note on algebraic categories
p. 163-167

Sommaire du Fascicule no. 4

Some remarks on the physical structure of energy-momentum tensors in general relativity
p. 169-176
Infinitesimal affine deformations of submanifolds of a Riemannian manifold
p. 177-182
Deviation of two curvatures
p. 183-186
Almost cosymplectic real hypersurfaces in Kähler manifolds
p. 187-192
On some sheaves over a differential space
p. 193-199
Laplacian in general Riemannian structures
p. 201-204
Another approach to the classical calculus of variations. I
p. 205-218
Term functions on non-Abelian groups of order $pq$
p. 219-220
Необходимые и достаточные условия несопряженности дифференциального уравнения $y''=qy$
p. 221-230