The filtration equation ut =f（u）xx has solutions which are not smooth because the diffusion coefficient has the zero point. As f’（u） is degenerate or singular a previous paper has proved the convergence of differ...
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The filtration equation ut =f（u）xx has solutions which are not smooth because the diffusion coefficient has the zero point. As f’（u） is degenerate or singular a previous paper has proved the convergence of difference solutions and the existence of the solution for the differential equation. In this paper, applying a similar method in which the estimations can be improved, we study another degenerate or singular nonlinear parabolic equation
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