A locally finitely presented morphism, also called a morphism locally of finite presentation, is a morphism of schemes such that every
point of
has an affine scheme neighborhood
mapping into an affine scheme neighborhood
of its image, where
is isomorphic to
for finite
and
. Thus locally the algebra
has finitely many generators and finitely many defining relations
over
.
This property is preserved by composition of morphisms and base change. Every smooth morphism is locally finitely presented.