Talk:Listing number
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Google Books has the "Census" paper by Listing, working on generalising the Euler characteristic. This seems to be the source of C. S. Peirce's interest in "Listing numbers" which he applied in discussions of arity.[1] There is a fair amount of scholarly literature from the side of Peirce. I don't know what "Listing number" would be in German, and I suspect it would be useful to find out. Charles Matthews (talk) 08:16, 13 August 2010 (UTC)