Forcing tightness in products of fans
Fundamenta Mathematicae, Tome 150 (1996) no. 3, pp. 211-226
We prove two theorems that characterize tightness in certain products of fans in terms of families of integer-valued functions. We also define several notions of forcing that allow us to manipulate the structure of the set of functions from some cardinal θ to ω, and hence, the tightness of these products. These results give new constructions of first countable that are not ≤θ-cwH.
@article{10_4064_fm_150_3_211_226,
author = {J\"org Brendle and Tim LaBerge},
title = {Forcing tightness in products of fans},
journal = {Fundamenta Mathematicae},
pages = {211--226},
year = {1996},
volume = {150},
number = {3},
doi = {10.4064/fm-150-3-211-226},
language = {en},
url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-150-3-211-226/}
}
TY - JOUR AU - Jörg Brendle AU - Tim LaBerge TI - Forcing tightness in products of fans JO - Fundamenta Mathematicae PY - 1996 SP - 211 EP - 226 VL - 150 IS - 3 UR - http://geodesic.mathdoc.fr/articles/10.4064/fm-150-3-211-226/ DO - 10.4064/fm-150-3-211-226 LA - en ID - 10_4064_fm_150_3_211_226 ER -
Jörg Brendle; Tim LaBerge. Forcing tightness in products of fans. Fundamenta Mathematicae, Tome 150 (1996) no. 3, pp. 211-226. doi: 10.4064/fm-150-3-211-226
Cité par Sources :