公約，公倍○量を計るとは何の謂ぞ○ユークリツドの法式，二つの場合○公約なき量の實例○ユークリツドの比の定義，比と有理數との相等及大小，二つの比の相等及大小○量と直線上の點との對照，稠密なる分布は連續に非ず，連續の定義○結論，數の原則
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三二三-三七九
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限りなく多くの數，上限及下限○基本定理○稠密なる分布，等分の可能，アルキメデスの法則は，凡て連續の法則に含蓄せらる○有理數の兩斷と無理數○無理數の展開，無限小數の意義○量を計ること及其數値の展開○展開せられたる數の大小の比較，展開の唯一なること○無理數の加法及其性質○加法の近似的演算○比例に關する定理，比例式解法，乘法及除法の意義○乘法及除法の性質○負數
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三八〇-四一四
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集積點，極限，其定義及例○集積點に關する基本の定理○無限列數，極限存在の條件○極限と四則，無理數及其算法の第二の定義○連續的算法の定義，連續的算法の擴張
