File:益古演段.jpg

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Description
中文（简体）：​益古演段
Date 13th century
date QS:P,+1250-00-00T00:00:00Z/7
Source mybook 根据唐戈藏书拍摄
Author Li Zhi (Chinese: 李治) (1192–1279),

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Date/TimeThumbnailDimensionsUserComment
current22:42, 6 April 2011Thumbnail for version as of 22:42, 6 April 2011579 × 817 (361 KB)wikimediacommons>Gisling{{Information |Description ={{zh-hans|1=益古演段}} |Source =mybook |Author =Li Zhi (Chinese: 李治) (1192–1279), |Date =13th century |Permission = |other_versions = }} Category:Chinese mathematics

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