Geodesic

Sommaire du Fascicule no. 1

In memory of Yuriĭ Aleksandrovich Abramovich
p. 3-10
Yuriĭ Aleksandrovich Abramovich
p. 11-12
Necessary conditions for the extremum in vector quasi-differentiable programs
p. 13-25
Non-uniqueness of certain Hahn–Banach extensions
p. 26-28
On minimax theorems for sets closed in measure
p. 29-36
Lattice homomorphisms in Banach-Kantorovich lattices
p. 37-41
On ideal of compact operators in real factors
p. 42-45
On the order structure of an abstract spin factor
p. 46-57
On bilinear operators that preserve disjunction
p. 58-70
On $CD_0(K)$-spaces
p. 71-73

Sommaire du Fascicule no. 2

Continuation of infinitely differentiable functions to entire functions with consistent estimates for growth, and theorems of Paley-Wiener-Schwartz type
p. 3-9
On the continuous dependence of the points of the spectrum of a boundary value problem, specified on a graph, on the parameters of the agreement conditions
p. 10-16
Characterization of complemented subspaces in Cartesian products of structurally incomparable Köthe spaces in the Dragilev classes $(f)_0$ and $(f)_1$
p. 17-20
Approximation of continuous functions by de la Vallée Poussin means for discrete Fourier-Jacobi sums
p. 21-38
On linear systems of equations in generalized convolution operators
p. 39-49
Commutative algebra of scalar quaternions
p. 50-57
Vladimir Petrovich Kondakov (on the occasion of his sixtieth birthday)
p. 58-60
Georgiĭ Georgievich Magaril-Il'yaev (on the occasion of his sixtieth birthday)
p. 61-63

Sommaire du Fascicule no. 3

Yuriĭ Grigor'evich Reshetnyak (on the occasion of his 75th birthday)
p. 3-6
A Caccioppoli type inequality
p. 7-11
A new order structure of real symmetric $(2\times 2)$-matrices
p. 12-20
Banach's theorem on an inverse operator in Banach-Kantorovich spaces
p. 21-25
Description of the principal components generated by operators that preserve disjunction
p. 26-35
On a nonlocal boundary value problem for a third-order loaded equation
p. 36-46
On band-preserving operators
p. 47-58
Interpolation of positive and regular linear operators in Orlicz spaces of measurable vector functions
p. 59-63

Sommaire du Fascicule no. 4

Vladimir Mikhaĭlovich Tikhomirov (on the occasion of his seventieth birthday)
p. 3-6
Some elementary formulas of convex analysis
p. 7-9
Optimal reconstruction of a harmonic function from the Fourier coefficients
p. 10-16
On the properties of solutions of a class of systems of nonlinear differential equations on graphs
p. 17-24
On the embedding and approximation of the intersection of sets and function classes
p. 25-30
Convex extensional operators
p. 31-41
Optimal interpolation and the Lagrange principle
p. 42-47
A generalized theorem on an inverse function, and extremal problems with constraints
p. 48-54
On the reconstruction of the solution of the Dirichlet problem from inexact initial data
p. 55-62
Optimal reconstruction of an integral over a $D$-dimensional ball
p. 63-67