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@article{CMUC_1982__23_4_a12, author = {Butkovi\v{c}ov\'a, Eva}, title = {Ultrafilters without immediate predecessors in {Rudin-Frol{\'\i}k} order}, journal = {Commentationes Mathematicae Universitatis Carolinae}, pages = {757--766}, publisher = {mathdoc}, volume = {23}, number = {4}, year = {1982}, mrnumber = {687570}, zbl = {0507.03020}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CMUC_1982__23_4_a12/} }
TY - JOUR AU - Butkovičová, Eva TI - Ultrafilters without immediate predecessors in Rudin-Frolík order JO - Commentationes Mathematicae Universitatis Carolinae PY - 1982 SP - 757 EP - 766 VL - 23 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMUC_1982__23_4_a12/ LA - en ID - CMUC_1982__23_4_a12 ER -
Butkovičová, Eva. Ultrafilters without immediate predecessors in Rudin-Frolík order. Commentationes Mathematicae Universitatis Carolinae, Tome 23 (1982) no. 4, pp. 757-766. http://geodesic.mathdoc.fr/item/CMUC_1982__23_4_a12/