Rebuttal to "Well-posedness and optimal decay rates for the viscoelastic Kirchhoff equation"

Abstract: A paper, entitled "Well-posedness and optimal decay rates for the viscoelastic Kirchhoff equation" was published in 2016, in the journal Boletim da Sociedade Paranaense de Matematica. The main results of that paper are stated in Theorem 1.3. Section 2 is devoted to stability estimates for the solutions of the Galerkin approximation (2.1)-(2.2) of (1.2). Section 3 is devoted to the proof of the well-posedness for the Kirchhoff equation (1.2). This rebuttal is written in view to show the major flaws, and gaps in the proofs of this publication.