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Ordinary or partial differential equations. Delay differential equations, neutral equations, integro-differential equations. Well-posedness, asymptotic behavior, and related questions.

2 votes
2 answers
254 views

Reference request: a singular differential equation

I need the following result (which I believe to be true though I was too lazy to write down a complete proof). Let $f$ be a function of two complex variables analytic at the origin and $a\not\in\m …
3 votes

Are there any techniques for solving a differential equation of the form $f ' (x) = f( f( x ...

For what I know, the standard method is the Taylor series expansion at a fixed point, i.e. at a point $x=a$ such that $f(a)=a$.
Alex Gavrilov's user avatar