Geodesic

Tome 45 (1989) no. 5

Sommaire

Algebrogeometric solutions of a boundary-value problem for the nonlinear Schr\"odinger equation
p. 3-9
Reduction of the problem of the classification of tubular quadrics to the solving of a system of differential equations of a special form
p. 10-18
Effective diffusion in the Fokker--Planck equation
p. 19-31
Balanced and cobalanced Butler groups
p. 32-37
Reducible variational equations and the perturbation of invariant tori of Hamiltonian systems
p. 38-49
Logarithmic asymptotic of rapidly decreasing solutions of Petrovskii hyperbolic equations
p. 50-62
Asymptotics of the discrete spectrum of the Dirichlet and Neumann problems on the fundamental domain of the crystallographic group
p. 63-69
A lower bound for the number of nodes in the cubature formula for a centrally symmetric integral
p. 70-75
Functional homology operations and the weak homotopy type
p. 76-86
Exact evaluation of Kolmogorov diameters of finite-dimensional octahedra
p. 87-92
Decidability of elementary theories of finitely presented algebras of the variety of algebras defined by the empty system of identities
p. 93-102
Semantic characterization of certain sets of intuitionistic logical connectives
p. 103-113
Trigonometric integrals that are integrable by the Riemann method
p. 114-117
On the spectrum of an operator pencil generated by the Dirichlet problem for an elliptic equation at a corner point
p. 117-118
Construction of surfaces in the carrying out of gas dynamic calculations
p. 119-121
Local `homogeneity' of sets of uniqueness
p. 121-123