Re: result from set theory (i think)

Ian Stewart described a similar result under the heading of "digital
sundials". A google search led, among other places, to this URL

http://www.digitalsundial.com/patent.html

which contains the references:

....Ian Stewart's column "Mathematical Recreations" (Ian Stewart, "What
in heaven is a digital sundial?", Scientific American, pages 104-106,
1991). In his article, Stewart builds on an idea first presented in
Kenneth Falconer's book "Fractal Geometry" on page 89 (Kenneth
Falconer, Fractal Geometry - Mathematical Foundations, John Wiley and
Sons, 1990)...

Hope that's helpful.

--Andy

Andrew D. Hwang
Dept of Mathematics and CS
College of the Holy Cross
Worcester, MA, 01610-2395, USA

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