Introduzione
Abstract
En
The ultrapower
of(Error rendering LaTeX formula) with respect to the ultrafilter F is considered:
(the set of real numbers)(Error rendering LaTeX formula) ect. ect. In the hypothesis that the ultafilter is δ-incomplete,
is properly imbedded in
(and all admissible sentences of
, which hold in
also hold in
).
The ultrapower
![^*\mathbb{R}](http://212.189.136.205/plugins/generic/latexRender/cache/618f04179845c7092e7415e1df6723a5.png)
![R<sub>0</sub>=R](http://212.189.136.205/plugins/generic/latexRender/cache/5396232db5e389074e55fbc73af9b1f7.png)
![\Re](http://212.189.136.205/plugins/generic/latexRender/cache/24c8b71eb3c8121becf7796ea3150bfd.png)
![<sup>*</sup>\Re](http://212.189.136.205/plugins/generic/latexRender/cache/9ac01c2774473159b804ec81d6b467df.png)
![\Re](http://212.189.136.205/plugins/generic/latexRender/cache/24c8b71eb3c8121becf7796ea3150bfd.png)
![\Re](http://212.189.136.205/plugins/generic/latexRender/cache/24c8b71eb3c8121becf7796ea3150bfd.png)
![<sup>*</sup>\Re](http://212.189.136.205/plugins/generic/latexRender/cache/9ac01c2774473159b804ec81d6b467df.png)
DOI Code:
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