23 Apr
2014
23 Apr
'14
4:13 p.m.
R. Weyhrauch notes that http://digital.library.pitt.edu/cgi-bin/t/text/pageviewer-idx?c=darltext;cc=... (a document older than the dollarsign) prescribes a bunch of tariffs in 90ths instead of %. I thought I had a mathematical motivation, but was wrong. NeilB thought of a historical, rather than mathematical explanation, but it seems decreasingly plausible. Can someone at least provide a good guess? --rwg