On exact and perturbation solutions to nonlinear equations for heat transfer models
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math.MP
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equationsexactheatmodelsnonlinearperturbationresultssolutions
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We analyze some exact and approximate solutions to nonlinear equations for heat transfer models. We prove that recent results derived from a method based on Lie algebras are either trivial or wrong. We test a simple analytical expression based on the hypervirial theorem and also discuss earlier perturbation results.
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