Fréchet differentiability
= Fréchet differentiability
{c}
= Fréchet differentiable
{c}
{synonym}
A map is <Fréchet differentiable> at $x$ if it admits a bounded linear first-order approximation: $f(x+h)=f(x)+Ah+o(\|h\|)$ for a <continuous linear map> $A$.