Titlebook: Hadamard Products of Projective Varieties; Cristiano Bocci,Enrico Carlini Book 2024 The Editor(s) (if applicable) and The Author(s), under

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ns and to practical rules of obtaining new solutions. Various linear equations of classical and quantum mechanics are solved by the Darboux and factorization methods. An extension of the classical Darboux transformations to nonlinear equations in 1+1 and 2+1 dimensions, as well as its factorization