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@article{10_4064_cm_23_2_199_202, author = {Ralph McKenzie}, title = {$\ensuremath{\aleph}_1$-incompactness of {Z}}, journal = {Colloquium Mathematicum}, pages = {199--202}, publisher = {mathdoc}, volume = {23}, number = {2}, year = {1971}, doi = {10.4064/cm-23-2-199-202}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-23-2-199-202/} }
Ralph McKenzie. $ℵ_1$-incompactness of Z. Colloquium Mathematicum, Tome 23 (1971) no. 2, pp. 199-202. doi : 10.4064/cm-23-2-199-202. http://geodesic.mathdoc.fr/articles/10.4064/cm-23-2-199-202/
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