{"version":"1.0","type":"link","title":"Abstract elementary class - Newikis","description":"In model theory, a discipline within mathematical logic, an abstract elementary class, or AEC for short, is a class of models with a partial order similar to the relation of an elementary substructure of an elementary class in first-order model theory. They were introduced by Saharon Shelah.","provider_name":"Newikis","provider_url":"https://newikis.com","cache_age":86400}