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On the Range of Certain Pendulum-Type Equations
Abstract Let us consider the BVP mx″ t + g 1 x ′ t = f t , t ∈ 0, T x 0 = x T , x′ 0 = x′ T , where g1 is a continuous function. The range R 1 of the operator related to this problem is very wellExpand
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El naturalismo en la literatura
La revista "Hora de España"
Américo Castro y Cervantes