Geodesic
Definable Ultrapowers and the Omitting Types Theorem
Publications de l'Institut Mathématique, _N_S_50 (1991) no. 64, p. 14

Voir la notice de l'article provenant de la source eLibrary of Mathematical Institute of the Serbian Academy of Sciences and Arts

A proof on the existence of elementary end extensions of certain countable linearly ordered models using definable ultrapowers is given. In the same style the proof of Keisler's two cardinal theorem is presented.
Classification : 03C20 
Žarko Mijajlović. Definable Ultrapowers and the Omitting Types Theorem. Publications de l'Institut Mathématique, _N_S_50 (1991) no. 64, p. 14 . http://geodesic.mathdoc.fr/item/PIM_1991_N_S_50_64_a2/
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     title = {Definable {Ultrapowers} and the {Omitting} {Types} {Theorem}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {14 },
     year = {1991},
     volume = {_N_S_50},
     number = {64},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PIM_1991_N_S_50_64_a2/}
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