1 Retraction note
The Editors-in-Chief have retracted this article because the results of this article are invalid. The article also shows significant overlap with an article by Liu [1] that was simultaneously under consideration with another journal, and with previously published articles [2, 3]. The authors have not responded to correspondence regarding this retraction.
References
Liu, Z.: RETRACTED ARTICLE: Existence of global solutions for the semilinear nonlocal fractional Cauchy problem of the Schrödinger equation. Bound. Value Probl. 2020, 16 (2020). https://doi.org/10.1186/s13661-020-01328-1
He, Q., Peng, S.: Existence, characterization and number of ground states for coupled equations. Electron. J. Differ. Equ. 2019, 127, 1–18 (2019)
Xu, R., Lin, Q., Chen, S., Wen, G., Lian, W.: Difficulties in obtaining finite time blowup for fourth-order semilinear Schrodinger equations in the variational method frame. Electron. J. Differ. Equ. 2019, 83, 1–22 (2019)
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Hu, Y., Qin, S., Liu, Z. et al. Retraction Note: Existence of global solutions to a quasilinear Schrödinger equation with general nonlinear optimal control conditions. Bound Value Probl 2021, 24 (2021). https://doi.org/10.1186/s13661-021-01502-z
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DOI: https://doi.org/10.1186/s13661-021-01502-z