Abstract
On the basis of bilinear equation of a (3+1)-dimensional B-type KP equation, we construct the lump-type solutions by symbolic computation. The (3+1)-dimensional B-type KP equation can be used to describe the propagation of nonlinear waves in fluid dynamics. The lump solutions of three dimensionally reduced (2+1)-dimensional B-type KP equation are derived. The sufficient and necessary conditions to guarantee the analyticity, positiveness and localization of lump solutions are discussed. Figures are presented to illustrate the energy distribution of these lump wave solutions.
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