New posts in Differential Equations

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

ordered exponential of unbounded operators

Why study Lie algebras?

Is there a Poincare-Hopf Index theorem for non compact manifolds?

Is square of Delta function defined somewhere?

Posing Cauchy data for the heat equation: $t=0$ a characteristic surface?

Function satisfying $f^{-1} =f'$

Can an integral equation always be rewritten as a differential equation?

Applied mathematics Books (graduate level)

What is an integrable system