Geodesic

Tome 30 (1975) no. 4

Sommaire

Lectures on linear partial differential equations
The connection between coreflexive subcategories and bicategorical structures
Conditions for the dissipativity of the vectorial Riccati differential equation
The properties of a certain linear-fractional operator transformation
The decomposition of a polynomial pencil into linear factors
The integral comparison and the disconjugacy of the solutions of second order linear equations
The representations of the $W$-group of a local field
The diameters of octahedra
Rings of quotients of semiprime $PI$-rings, and irreducible subdirect products
Lacunary subsystems of the trigonometric system of functions
The convergence of the solutions of elliptic and parabolic equations when there is weak convergence of coefficients
Almost compactness, almost separability and entropy characteristics of metric spaces with a measure
Semisimple subalgebras of certain simple real Lie algebras
Power algorithms in the theory of systems of linear Diophantine equations
The asymptotic multiplicity of the spectrum of the Laplace operator
The dimension of a sum of curves
Strict differentiability of mappings of $K$-spaces, and some theorems on local invertibility
On First All-Union Mathematical Competition for Students
S.. L. Sobolev, Introduction to the theory of cubature formulae (review)
New books on mathematics
Letter to the editors
Remarks on the note `Uniform classification of motions in Euclidean and Lobachevskian spaces'