Barwise compactness theorem

ID: barwise-compactness-theorem

The Barwise Compactness Theorem is a result in model theory, specifically concerning first-order logic and structures. It extends the concept of compactness, which states that if every finite subset of a set of first-order sentences has a model, then the entire set has a model. The Barwise Compactness Theorem applies this idea to certain kinds of structures known as "partial structures.

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