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2020, Volume 7, Issue 2  


ON THE ANNIVERSARY OF A. I. GENERALOV
On the 70th anniversary of Aleksandr Ivanovich Generalov
183–186
Ramanujan denesting formulae for cubic radicals
M. A. Antipov, K. I. Pimenov
187–196
Automorphisms of finite quasigroups with no subquasigroups
V. A. Artamonov
197–209
Calculations in generalised lubin - Tate theory
S. V. Vostokov, E. O. Leonova
210–216
Linear operators preserving majorization of matrix tuples
A. E. Guterman, P. M. Shteyner
217–229
On sufficient conditions for the closure of an elementary net
A. K. Gutnova, V. A. Koibaev
230–235
Homological properties of quotient divisible abelian groups and compact groups dual to them
N. I. Kryuchkov
236–244
Hazewinkel functional lemma and formal groups classification
A. I. Madunts
245–253
Supercharacter theory for the borel contraction of the group $Gl(n, F_q)$
A. N. Panov
254–268

IN MEMORIAM OF V. A. PLISS
On the stability of "nonlinear center" under quasiperiodic perturbations
V. V. Basov, Yu. N. Bibikov
269–276
On the existence of a solution of the boundary initial-value problem
V. V. Basov, Yu. A. Iljin
277–288
On problems of the theory of stability of weakly hyperbolic invariant sets
N. A. Begun
289–296
Stability of periodic solutions of periodic systems of differential equations with a heteroclinic contour
E. V. Vasil'eva
297–308
On the problem of Aizerman: Coefficient conditions for an existence of three-period and six-period ñycles in a second-order discrete-time system
T. E. Zvyagintseva
309–318
Qualitative studies of some biochemical models
C. Pantea, V. G. Romanovski
319–330

MATHEMATICS
Constructing c-optimal designs for polynomial regression with no intercept
V. B. Melas, P. V. Shpilev
331–342
Second order monotone difference schemes with approximation on non-uniform grids for two-dimensional quasilinear parabolic convection-diffusion equations
L. M. Hieu, D. N. Thanh, V. B. Prasath
343–355

MECHANICS
The transgression effect in the problem of motion of an almost holonomic pendulum
A. S. Kuleshov, I. I. Ulyatovskaya
356–361

CHRONICLE
In memoriam of O.A. Ivanov (1951-2019)
362–364
Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy
 
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