metatheorem

plural metatheorems

1. human sciencesA statement about theorems proven in a metalanguage.

   The metatheorem of deduction will play an essential role ...

   2008, Walter Carnielli, Marcelo Coniglio, Dov M. Gabbay, Paula Gouveia, Cristina Sernadas, Analysis and Synthesis of Logics: How to Cut and Paste Reasoning Systems, Springer Science & Business Media, →ISBN, page 70

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   From these observations we conclude that we have the following metatheorem. Metatheorem 3: If φ is a theorem of second-order monadic predicate logic, then trs'(φ) is a theorem of our present conceptualist logic.

   2007, Nino B. Cocchiarella, Formal Ontology and Conceptual Realism, Springer Science & Business Media, →ISBN, page 224

   This paper presents a metatheorem with the following property: Given a proven axiom-free lemma, which interrelates some of the elementary properties of a binary relation, the metatheorem mechanically transforms this lemma into its uniquely corresponding complementary lemma.

   1977, Theory and decision