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Automorphisms of Models of True Arithmetic: More on Subgroups which Extend to a Maximal One Uniquely
Author(s) -
Kotlarski Henryk,
Piekart Bożena
Publication year - 2000
Publication title -
mathematical logic quarterly
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.473
H-Index - 28
eISSN - 1521-3870
pISSN - 0942-5616
DOI - 10.1002/(sici)1521-3870(200001)46:1<111::aid-malq111>3.0.co;2-e
Subject(s) - mathematics , countable set , automorphism , extension (predicate logic) , arithmetic , discrete mathematics , computer science , programming language
Continuing the earlier research in [14] we give some more information about nonmaximal open subgroups of G = Aut(ℳ) with unique maximal extension, where ℳ is a countable recursively saturated model of True Arithmetic.