The Theorems of Beth and Craig in Abstract Model Theory,iii: ∆-logics and Infinitary Logics Sh113
نویسنده
چکیده
We give a general technique on how to produce counterexamples to Beth’s definability (and weak definability) theorem. The method is then applied for various infinitary, cardinality quantifier logics and ∆-closure of such logics. I would like to thank Alice Leonhardt for the beautiful typing. AMS-Classification: 03C95, 03C20, 03E55, 03C55, 03C30. The author would like to thank the United States Israel Binational Science Foundation for partially supporting this research. First Typed 1975 Latest Revision 01/Mar/19 Typeset by AMS-TEX 1
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تاریخ انتشار 2001