Izvestiya Vysshikh Uchebnykh Zavedenii. Matematika
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1980, Number 1  

Optimization of collocation methods for solving integral and differential equations
B. G. Gabdulkhaev 		3–11
Projections of two-step nilpotent Lie algebras
A. G. Gein 		12–15
The approximate solution of a matrix Riemann problem
V. D. Didenko, N. Ya. Tikhonenko 		16–19
Faber series and the problem of linear conjugation
V. A. Kuprin 		20–26
The method of linearized residuals for the approximate solution of functional equations
V. A. Kurchatov 		27–33
Accelerated algorithms for multiplication of a transposed vector by matrices $\begin{Vmatrix}G&O\\O&G_T\end{Vmatrix}$ and $\|GG^T\|$
A. I. Lenin, O. M. Makarov 		34–38
On the question of the involutivity of systems of Pfaffian equations
G. N. Makeev 		39–44
Absolute summability of degree $p$ of series that are connected with Fourier series, by triangular matrix methods
N. S. Novikova, N. I. Volkova 		45–49
The existence of a second eigenvalue of a linear integral operator with a nonnegative kernel
I. Sobirov 		50–52
Properties of roots of some polynomials depending on a parameter
N. P. Fadeev 		53–56
The Norden-normalized submanifold with a parallel field of normal directions in $P_n$
A. V. Chakmazyan 		57–63

Brief communications
Continuous inverse semigroups of open partial homeomorphisms
A. A. Beida 		64–65
Zero solutions of partial differential evolution equations with deviating time argument
E. S. Viglin 		66–68
On the spline method for solving integral equations
L. P. Gaifullina 		68–71
Regularization of the construction of a nonsingular solution of a linear equation of the first kind with degeneracy
S. A. Gukovskii 		71–74
Perturbation of linear operators
Din' Bat Tkham, N. Ya. Krupnik 		74–75
A polynomial algorithm for finding minimal vertex coverings for a class of planar graphs
E. B. Kinber 		75–77
A relaxation subgradient algorithm for minimizing convex functions
M. I. Kreinin 		77–79
The dual theory of regular distributions of hyperplane elements in a space with projective connection. I
A. V. Stolyarov 		79–82
The convergence of a quadrature process for a singular integral with power-logarithmic singularity
M. A. Sheshko, T. S. Yakimenko 		82–84
Известия высших учебных заведений. Математика Russian Mathematics (Izvestiya VUZ. Matematika)
 
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