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Nonlinear Klein-Gordon and Schrödinger equations by the projected differential transform method. (English) Zbl 1246.65235
Summary: The differential transform method (DTM) is based on the Taylor series for all variables, but it differs from the traditional Taylor series in calculating coefficients. Even if the DTM is an effective numerical method for solving many nonlinear partial differential equations, there are also some difficulties due to the complex nonlinearity. To overcome difficulties arising in DTM, we present the new modified version of DTM, namely, the projected differential transform method (PDTM), for solving nonlinear partial differential equations. The proposed method is applied to solve the various nonlinear Klein-Gordon and Schrödinger equations. Numerical approximations performed by the PDTM are presented and compared with the results obtained by other numerical methods. The results reveal that PDTM is a simple and effective numerical algorithm.

MSC:
65N99 Numerical methods for partial differential equations, boundary value problems
35Q55 NLS equations (nonlinear Schrödinger equations)
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