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How I can prove that for the class $K$ of well-ordered structures there is no finite set of statements $T$ such that $\text{Mod} (T) = K$?

Thanks

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    This question would benefit from more details to be honest. In what context have you come across the question? What have you tried so far?2012-11-27
  • 2
    The (characteristic-classes) tag was not at all relevant.2012-11-28

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