The bilinear Bäcklund transformation and the exact solutions of a (3+1) dimensional generalized nonlinear development equation are studied based on the Hirota bilinear method and the trial function method in the paper. Firstly, the bilinear form and bilinear Bäcklund transformation of (3+1)⁃dimensional generalized nonlinear evolution equation are constructed by using Hirota bilinear method. Secondly, various exact solutions of (3+1)⁃dimensional generalized nonlinear evolution equation, including N⁃soliton solution, breather wave solution, compound solution, Lump periodic solution, Lump kink solution and soliton solution, are obtained by using trial function method and symbolic calculation system Mathematica based on bilinear form and bilinear Bäcklund transformation, and the interaction of the solutions is analyzed.
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