Logichard
0:00.0
The Compactness Theorem of first-order logic states that a set of sentences has a model if and only if every finite subset of it has a model. Which of the following is a direct consequence of this theorem?
The Compactness Theorem of first-order logic states that a set of sentences has a model if and only if every finite subset of it has a model. Which of the following is a direct consequence of this theorem?