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| ``algebra''
by remag12 on 2007-08-18 16:29:04 |
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| | In your definition of an algebra, there are many authors, who do not require that the ring has an identity at all. The Bourbaki school does, but as mentioned many mathematicians do not. The presence of an identity element helps, when maximal ideals (or one sided ideals are needed of course.) |
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