Counting rods alternate forms

Doug Ewell doug at
Wed Aug 17 15:16:13 CDT 2016

Richard Cook wrote:

>> It is well known that the southern song style of counting rods, had
>> different forms for the digits 4, 5 and 9
>> , however currently there
>> is no way to represent such forms, 
> 〤[U+3024] 〥[U+3025] 〩[U+3029] 

The Wikipedia article (which, as such, needs to be corroborated) says:

"In the 13th century, Southern Song mathematicians changed digits for 4,
5, and 9 to reduce strokes. The new horizontal forms eventually
transformed into Suzhou numerals. Japanese continued to use the
traditional forms."

So there is a distinction between the alternate forms Eduardo is
describing, and the Suzhou ("Hangzhou") numerals derived from them that
Richard cited. 
Doug Ewell | Thornton, CO, US |

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