Geodesic
On the existence of true uniform ultrafilters
Commentationes Mathematicae Universitatis Carolinae, Tome 45 (2004) no. 4, pp. 739-741 Cet article a éte moissonné depuis la source Czech Digital Mathematics Library

Voir la notice de l'article

We shall show that there is an ultrafilter on singular $\kappa$ with countable cofinality, which cannot be reached from the set of all subuniform ultrafilters by iterating the closure of sets of size $\kappa$.
We shall show that there is an ultrafilter on singular $\kappa$ with countable cofinality, which cannot be reached from the set of all subuniform ultrafilters by iterating the closure of sets of size $\kappa$.
Classification : 54A20, 54D80, 54G05
Keywords: uniform ultrafilter; linked family 
@article{CMUC_2004_45_4_a13,
     author = {Simon, Petr},
     title = {On the existence of true uniform ultrafilters},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {739--741},
     year = {2004},
     volume = {45},
     number = {4},
     mrnumber = {2103088},
     zbl = {1099.54006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_2004_45_4_a13/}
}
TY  - JOUR
AU  - Simon, Petr
TI  - On the existence of true uniform ultrafilters
JO  - Commentationes Mathematicae Universitatis Carolinae
PY  - 2004
SP  - 739
EP  - 741
VL  - 45
IS  - 4
UR  - http://geodesic.mathdoc.fr/item/CMUC_2004_45_4_a13/
LA  - en
ID  - CMUC_2004_45_4_a13
ER  - 
%0 Journal Article
%A Simon, Petr
%T On the existence of true uniform ultrafilters
%J Commentationes Mathematicae Universitatis Carolinae
%D 2004
%P 739-741
%V 45
%N 4
%U http://geodesic.mathdoc.fr/item/CMUC_2004_45_4_a13/
%G en
%F CMUC_2004_45_4_a13
Simon, Petr. On the existence of true uniform ultrafilters. Commentationes Mathematicae Universitatis Carolinae, Tome 45 (2004) no. 4, pp. 739-741. http://geodesic.mathdoc.fr/item/CMUC_2004_45_4_a13/