Homogeneous model
= Homogeneous model
A model $N$ of cardinality $\kappa$ is homogeneous when every partial elementary map between subsets of size less than $\kappa$ extends to an automorphism of $N$.
= Homogeneous model
A model $N$ of cardinality $\kappa$ is homogeneous when every partial elementary map between subsets of size less than $\kappa$ extends to an automorphism of $N$.