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3 ideas
18744 | Models are sets with functions and relations, and truth built up from the components [Horsten/Pettigrew] |
17747 | A 'model' of a theory specifies interpreting a language in a domain to make all theorems true [Walicki] |
17748 | The L-S Theorem says no theory (even of reals) says more than a natural number theory [Walicki] |