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1. CMB 2010 (vol 53 pp. 286)
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Orders of π-Bases We extend the scope of B. Shapirovskii's results on the order of $\pi$-bases in compact spaces and answer some questions of V. Tkachuk.
Keywords:Shapirovskii π-base, point-countable π-base, free sequences, canonical form for ordinals Categories:54A25, 03E10, 03E75, 54A35 |