“…Remark We give some comments about the singular curve and critical curve for double nonlinear Equation (). - If , then becomes , and becomes q = p s , which are the singular exponent and critical exponent respectively for Lane–Emden type equation, see previous works 11–13
- If , then becomes , and becomes , which are the singular exponent and critical exponent respectively for porous medium equation, see our recent work 14
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