Abstract
We present a method for constructing exact solutions of nonlinear diffusion equations in a one-dimensional coordinate space using a special superposition principle. As equations of nonlinear diffusion, we take equations of the form nt − (log n)xx + μn + γn 2 − g = 0, which play an important role in the problem of the emergence of regular structures in nonlinear media under the action of external radiation sources. The method is based on using differential properties of polynomials in functional parameters. We present concrete solutions and analyze some of their common properties.
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