Saturated model
In mathematical logic, and in particular model theory, a model is -saturated if and only if it realizes all elements , for with .A model is saturated if and only if it is -saturated, that is, it realizes all complete types over sets of parameters of size less than .
Saturated models exist: for instance, is saturated, the countable random graph is saturated. The natural numbers are not saturated: the type containing
is not realized in .