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Apr 3, 2019 at 1:11 comment added Tim Campion Some interesting information about this relation is found in the answers here.
Apr 13, 2017 at 12:58 history edited CommunityBot
replaced http://mathoverflow.net/ with https://mathoverflow.net/
Dec 14, 2016 at 19:42 comment added HeinrichD @Tim: Right! I didn't see see your question. Perhaps my question then can get closed as a duplicate. On the other hand, your question has no detailed answer.
Dec 14, 2016 at 16:00 comment added Tim Campion I think this is basically what I was asking here.
Dec 14, 2016 at 13:59 comment added Joel David Hamkins There is a rich literature concerning generalized covering and dominating numbers, or generalized cardinal characteristics, to which this concept is related. For exampe, Levi's answer to the question to which you link points at one article.
Dec 14, 2016 at 11:42 history edited HeinrichD CC BY-SA 3.0
added 10 characters in body; edited tags
Dec 14, 2016 at 10:45 history asked HeinrichD CC BY-SA 3.0