Re: Chinese rod numerals

From: Raymond Mercier (
Date: Sat Jan 10 2004 - 12:07:32 EST

  • Next message: Peter Kirk: "Re: Chinese rod numerals"

    This is an excellent suggestion. A submission can be made using
    n2352-form.pdf that you can get from this site.

    Raymond Mercier

    ----- Original Message -----
    From: "Christopher Cullen" <>
    To: "Unicode list" <>
    Sent: Saturday, January 10, 2004 12:23 PM
    Subject: Chinese rod numerals

    > I am an academic with research interests in the history of ancient
    > Chinese mathematics, and I should like to propose the encoding of
    > traditional Chinese rod numerals.
    > These represent the arrays of "counting rods" on a counting board as
    > used in China for complex calculations before the invention of the
    > abacus. There are eighteen forms in all, representing the numerals one
    > to nine in two forms which are basically versions of each other with a
    > 90 degrees rotation. One form is used for units, the the other for
    > tens, then back to the first form for hundreds, and so on. A zero is
    > represented by a gap in the array. For pictures of these and an
    > explanatory text, see:
    > These forms appear in pre-modern mathematical books in China, and in
    > modern books discussing ancient mathematics. They are not to be
    > confused with the the related "Hangzhou numerals", which are already
    > encoded at 3021-303a. It would be a great convenience to have these
    > as a standard resource rather than having to create a special private
    > font in order to represent them.
    > From a private source, I have been told that these forms are neither in
    > any current Unicode encoding initiative, nor indeed anywhere in the
    > proposal pipeline. I should therefore be grateful for any comments or
    > advice that might guide me towards making a formal submission.
    > Christopher Cullen

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