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BASM n.2(90), 2019

Survey article
Limit cycles in continuous and discontinuous piecewise linear differential systems with two pieces separated by a straight line
Jaume Llibre
pp.3-12
Research articles
The problem of the center for cubic differential systems with the line at infinity and an affine real invariant straight line of total algebraic multiplicity five
Şubă Alexandru, Silvia Turuta
pp.13-40
The topological classification of a family of quadratic differential systems in terms of affine invariant polynomials
Dana Schlomiuk, Vulpe Nicolae
pp.41-55
Levitan Almost Periodic Solutions of Infinite-dimensional Linear Differential Equations
David Cheban
pp.56-78
The classification of a family of cubic differential systems in terms of configurations of invariant lines of the type (3,3)
Bujac Cristina
pp.79-98
On the upper bound of the number of functionally independent focal quantities of the Lyapunov differential system
Popa Mihail, Pricop Victor
pp.99-112
On limit cycles of polynomial systems of the first-order ODE’s
Driuma Valeriu
pp.113-26
Sufficient GL(2,R)-invariant center conditions for some classes of two-dimensional cubic differential systems.
Calin Iurie, Baltag Valeriu
pp.127-136
Invariant conditions of stability of unperturbed motion governed by critical differential systems s(1,2,3)
Natalia Neagu, Orlov Victor, Popa Mihail
pp.137-153
Events, anniversary dates
Working with professor Nicolae Vulpe
Dana Schlomiuk
pp.154-160


BASM n.3(91), 2019
BASM n.1(89), 2019