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On Thu, Jun 4, 2015 at 12:09 PM, Javier Guerra Giraldez
<javier@guerrag.com> wrote:
> AFAIK, "numeral" is a digit, that is, a symbol we use to write
> numbers.  it's not a number, much less a numeric value.

"2" is both a numeral and a digit.
"0" is both a numeral and a digit."

"20" is a numeral.  However, "20" is not a digit.

http://www.thefreedictionary.com/numeral

"numeral n 1. (Mathematics) a symbol or group of symbols used to
express a number"

Related, https://en.wikipedia.org/wiki/Numerical_digit

-Parke