Subject: for the top list Date: Wed, 8 May 2002 14:24:28 -0400 (Eastern Daylight Time) From: "Nicholas J. Kuhn" To: Don Davis CC: njk4x@virginia.edu A comment on notation: In the literature, X has been used for decades to denote an appropriate connective cover of a space (or spectrum) X. Exactly WHAT cover seems to vary. For example, glancing through random stuff in my office reveals many folks for whom X is the n-connected cover, and many others for whom X is the n-1 st connected cover. (E.G. My random sampling has Fred Cohen in the first camp, and Mark Mahowald in the second, and the issue didn't come up in their joint papers.) I am guessing that X is n-connected was historically first. Can anyone verify this? And then those who use X to be n-1--connected realized the first guys got it wrong. (History?) And I concur. In fact, I would like to use this list to speed up this mutation of notation. Thoughts? Nick Kuhn