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We compute 12-derivations on the deformative Schr\"odinger-Witt algebra, on not-finitely graded Witt algebras Wₙ (G), and on not-finitely graded Heisenberg-Witt algebra HWₙ (G). We classify all transposed Poisson structures on such algebras.
Kaygorodov et al. (2024) studied this question.