Caliber (ω1, ω) is not productive
Watson, Stephen ; Hao-Xuan, Zhou
Fundamenta Mathematicae, Tome 134 (1990), p. 1-4 / Harvested from The Polish Digital Mathematics Library
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Publié le : 1990-01-01
EUDML-ID : urn:eudml:doc:211810 
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     author = {Stephen Watson and Zhou Hao-Xuan},
     title = {Caliber ($$\omega$\_1$, $\omega$) is not productive},
     journal = {Fundamenta Mathematicae},
     volume = {134},
     year = {1990},
     pages = {1-4},
     language = {en},
     url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-fmv135i1p1bwm}
}

Watson, Stephen; Hao-Xuan, Zhou. Caliber ($ω_1$, ω) is not productive. Fundamenta Mathematicae, Tome 134 (1990) pp. 1-4. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-fmv135i1p1bwm/