2. Articole

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    LARGE-TIME BEHAVIOR OF THE DIFFERENCE OF SOLUTIONS OF TWO EVOLUTION EQUATION
    (CEP USM, 2017) Perjan, Andrei; Rusu, Galina
    In a real Hilbert space H we consider a linear self-adjoint positive definite operator A : V = D ( A ) ⊂ H → H and investigate the behavior of the difference u − v of solutions to the problems u ′′ ( t ) + u ′ ( t ) + Au ( t ) = f ( t ) , t > 0 , u (0) = u 0 , u ′ (0) = u 1 , v ′ ( t ) + Av ( t ) = f ( t ) , t > 0 , v (0) = u 0 , where u 0 , u 1 ∈ H, f : [0 , + ∞ ) → H.