2007/12/30 by Isaac Gorelic, Gorelic, Isaac
Computer Science · Engineering · Mathematics · #03E10 #03E75 #54A25 #54A35 #Coding theory and cryptography #FOS: Mathematics #General Topology (math.GN) #Logic (math.LO) #Rings, Modules, and Algebras #graph theory and CDMA systems #math.GN #math.LO #msc:03E10 #msc:03E75 #msc:54A25 #msc:54A35
paper · pdf · doi:10.48550/arxiv.0801.0170
11 pages
arxiv created 2007/12/30 · openalex publication_date 2007/12/30 · arxiv updated 2009/12/01 · openalex created_date 2024/04/11 · openalex updated_date 2026/07/28
We extend the scope of B. Shapirovskii's results [B.E Shapirovskii, "Cardinal invariants in Compact Hausdorff Spaces," Amer. Math. Soc. Transl. (2) Vol. 134, 1987, pp. 93-118] on the order of π-bases in compact spaces and answer some questions of V. Tkachuk in [V.V. Tkachuk, "Point-countable pi-bases in first-countable and similar spaces," Fund. Math. 186 (2005), pp.55-69].