Relativised Homomorphism Preservation at the Finite Level
نویسندگان
چکیده
منابع مشابه
Homomorphism Preservation on Quasi-Wide Classes
A class of structures is said to have the homomorphism-preservation property just in case every firstorder formula that is preserved by homomorphisms on this class is equivalent to an existential-positive formula. It is known by a result of Rossman that the class of finite structures has this property and by previous work of Atserias et al. that various of its subclasses do. We extend the latte...
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ژورنال
عنوان ژورنال: Studia Logica
سال: 2017
ISSN: 0039-3215,1572-8730
DOI: 10.1007/s11225-017-9710-7