Michael Kleber sent this this morning. [Date: Tue, 17 May 2005 12:06:30 -0400]

Oof: I wrote all of

> The standard big results here are: (1) there is a critical probability, > usually denoted p_c, such that if you declare squares open with > probability p < p_c, the probability of an infinite open component is > zero, while with p > p_c it is 1. In dimension two, it's even known > that p <= p_c is the probability zero condition; what happens at p_c > exactly is known for some other lattices, but I don't know the full story. ... but I neglected to mention that Robert Ziff's 1992 paper "Spanning probability in 2D percolation" (Phys. Rev. Lett. 69, 2670-2673 (1992)) calculated that p_c for the 2d square lattice is 0.5927460 +- .0000005 But his message included a special character for +-, and another for the dash between the page numbers in the reference. This seems to have poisoned it for ascii readers. I'd like to get an idea of what OS/browser/mailsoftware and other likely configuration stuff affected the reading of this message. Would those readers with a spare minute please send ME (not the list) a brief note saying which way they got the message, junk or intelligible, and what OS/&c/&c they are using. I'll try to figure out what's going on, and perhaps be able to do something about it. Rich rcs@cs.arizona.edu