Existence results for second-order monotone differential inclusions on the positive half-line

Gheorghe Morosanu

Consider in a real Hilbert space $H$ the differential equation (inclusion) $(E)$: $p(t)u^{\prime \prime }(t)+q(t)u^{\prime }(t)\in Au(t)+f(t)$ for a.a. $t>0$, with the condition $(B)…