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Update 06 行列第六.md
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LingDong- committed Jun 28, 2020
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列列者。載列之列也。縱橫如方陣然。如棋局然。如田壠然。

尚書正義曰。天與禹洛出書。神龜負文而出。列於背。有數至於九。禹遂因而第之。以成九類。朱熹以之為九宮數。奇者合縱橫斜皆十五。其術見於楊輝續古摘奇算法。曰九子斜排。上下對易。左右相更。四維挺出。戴九履一。左三右七。二四為肩。六八為足。今入九宮數於列列如下。
尚書正義曰。天與禹洛出書。神龜負文而出。列於背。有數至於九。禹遂因而第之。以成九類。朱熹以之為九宮數。奇者合縱橫斜皆十五。其術見於楊輝續古摘奇算法。曰九子斜排。上下對易。左右相更。四維挺出。戴九履一。左三右七。二四為肩。六八為足。五居中央。今入九宮數於列列如下。

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吾有一列。名之曰「行一」。充「行一」以四。以九。以二。
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