Comment on the Paper “Direct and Inverse Problems for a Third Order Self-Adjoint Differential Operator with Periodic Boundary Conditions and Nonlocal Potential” by Yixuan Liu and Jun Yan (Results Math., 2024, 79:21)
摘要
This comment shows that the main results of [Liu and Yan in Results Math 79:21, (2024)] immediately follow from the abstract results of [Dobosevich and Hryniv in Integr Equ Oper Theory 93:18, (2021)].