Again, a question closely related to a characterization of *standard atoms* (not to be confused with standard alphabets:). The question is a refinement of a question posted in Automorphisms vs color-preserving automorphisms in Fraisse classes, which has been answered negatively (see the recent post The colored open question closed).

# Tag Archives: standard atoms

# Automorphisms vs color-preserving automorphisms in Fraisse classes

Here is a question closely related to a characterization of *standard atoms* (not to be confused with standard alphabets:). It asks whether a bound on the number of automorphisms is equivalent to a bound on the numer of color-preserving automorphisms, in every Fraisse class of finite relational structures.