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Florian Cajori's A History of Mathematical Notations goes into the history and notes examples of old written manuscripts showing the intermediate form in use, w
by nemo 12y ago
Florian Cajori's A History of Mathematical Notations goes into the history and notes examples of old written manuscripts showing the intermediate form in use, with one example where both were used interchangeably in a letter. He examined the question in depth, showed that the earliest uses in the US had a single stroke, with the double stroke only coming later, and dealt with the other theories showing as conclusively as possible that it's a peso sign composed of a superimposed P/S. It's an old book, and not on a web site, but you could probably find a copy at a library.
- acqq 12y agoHere's the link to the book you refer to (two volumes in one, the second volume starts at p. 469). I can't see where it writes about the dollar sign, can you help me? http://monoskop.org/images/2/21/Cajori_Florian_A_History_of_Mathematical_Notations_2_Vols.pdf http://monoskop.org/images/2/21/Cajori_Florian_A_History_of_... Edit: thanks Nemo!
- nemo 12y agoIt starts on p. 15 of volume II, around 2/3s of the way into the pdf.