partial differential equations - difference between second order quasi linear and semi linear PDE - Mathematics Stack Exchange

I am studying the second order PDE's and I am a bit confused with classification of quasi linear and semi linear PDEs. Could anybody explain on examples what is a difference between them please?

partial differential equations - difference between second order quasi linear and semi linear PDE - Mathematics Stack Exchange Stack Internal Knowledge at work Bring the best of human thought and AI automation together at your work. Explore Stack Internal difference between second order quasi linear and semi linear PDE Ask Question Asked 10 years ago Modified 10 years ago Viewed 7k times 5 $\begingroup$ I am studying the second order PDE's and I am a bit confused with classification of quasi linear and semi linear PDEs. Could anybody explain on examples what is a difference between them please

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