Application of homotopy perturbation method to fuzzy nonlinear Klein-Gordon equation with variable coefficients

In this paper, the author will first propose fuzzy nonlinear Klein-Gordon equation and then an application of He's homotopy perturbation method is applied to solve this equation via the same strategy as Buckley- feuring solution and Seikkala solution. Numerical illustrations that include fuzzy nonlinear Klein-Gordon equations are investigated to show the effectiveness and convenience of the method.