Glossary of mathematical symbols - Wikipedia

A mathematical symbol is a figure or a combination of figures that is used to represent a mathematical object, an action on mathematical objects, a relation between mathematical objects, or for structuring the other symbols that occur in a formula. As formulas are entirely constituted with symbols of various types, many symbols are needed for expressing all mathematics. The most basic symbols are

[igrep]

もしかしてやっぱり日本語版より詳しい？

[mooz]

数学記号一覧

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門外漢ですが，たまにコピペしたいときがあります。

[yosh0419]

数学記号のまとめ

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統計にかかわる記号まとめ

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数学記号と英語表現

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数学記号