How many clouds cover the plane?
James H. Schmerl
Fundamenta Mathematicae, Tome 177 (2003), p. 209-211 / Harvested from The Polish Digital Mathematics Library
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The plane can be covered by n + 2 clouds iff 2ℵ₀≤ℵₙ.

Publié le : 2003-01-01
EUDML-ID : urn:eudml:doc:283389 
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     author = {James H. Schmerl},
     title = {How many clouds cover the plane?},
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     volume = {177},
     year = {2003},
     pages = {209-211},
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James H. Schmerl. How many clouds cover the plane?. Fundamenta Mathematicae, Tome 177 (2003) pp. 209-211. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-fm177-3-2/