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Christianto, V.; Smarandache, F. Ermakov Equations Can Be Derived from Zel’dovich Pancake, and They Are Cold and Nonlocal through Using Neutrosophic Venn Diagram. Neutrosophic Opt. Int. Syst. 2024, 2, 19-27. https://doi.org/10.61356/j.nois.2024.2213.