Abstract
We apply some abstract existence results, proved in Sections 1 and 2 of the paper, to some cases of the following problem (P), formally stated as
whereK,L,M are linear and/is a nonlinear term. The unknown functionu is required to lie in various functional spaces.
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We collect here for reference standard notation which will be employed throughout the whole paper.
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Favini, A., Plazzi, P. Some results concerning the abstract degenerate nonlinear equationD t Mu(t) +Lu(t)=f(t, Ku(t)) . Circuits Systems and Signal Process 5, 261–274 (1986). https://doi.org/10.1007/BF01600059
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DOI: https://doi.org/10.1007/BF01600059