The model relationship "$\models$" is first order definable, so one could have a sentence S which said that a structure B is a model of a sentence C, and S could in its turn be satisfied by a model A. Would A also satisfy C?
2026-04-08 22:01:20.1775685680
If A is a model of (B is a model of C), then can we say that A is a model of C?
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