🚧乘法單位元素 𝕝

multiplicative identity╱🚧 under construction ->

數學數系實數建造乘法 ⟩ 單位元素 𝕝{\color{orange}\mathbf{𝕝}}

乘法單位元素性質

⑴ 若 a𝟘{\color{orange}a} \ge {\color{orange}\mathbb{𝟘}}𝕝a=a𝕝=a{\color{orange}\mathbf{𝕝}} \cdot {\color{orange}a} = {\color{orange}a} \cdot {\color{orange}\mathbf{𝕝}} = {\color{orange}a}

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