RT journal article T1 Well posedness for a fourth-order equation of Moore-Gibson- Thompson type A1 Lizama, Carlos A1 Murillo Arcila, Marina A2 Matemáticas K1 Well-posedness K1 Moore-Gibson-Thompson equation K1 Operator-valued multipliers K1 R- boundedness AB In this paper, we completely characterize, only in terms of the data, the well-posednessof a fourth order abstract evolution equation arising from the Moore-Gibson-Thomson equation withmemory. This characterization is obtained in the scales of vector-valued Lebesgue, Besov and TriebelLizorkin function spaces. Our characterization is flexible enough to admit as examples the Laplacianand the fractional Laplacian operators, among others. We also provide a practical and general criteriathat allows $L_p- L_q$- well posedness. PB Bolyai Institute, University of Szeged YR 2021 FD 2021 LK http://hdl.handle.net/10498/35345 UL http://hdl.handle.net/10498/35345 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 11-nov-2026