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Thread: Is |0| (mod of zero) invalid (i.e. not defined)?

  1. #1 Is |0| (mod of zero) invalid (i.e. not defined)? 
    Forum Freshman Sudhamsu's Avatar
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    I read it in my maths textbook that |0| (mod of zero) is not defined. Can't it be equal to 0 (zero) itself?


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  3. #2  
    Forum Ph.D.
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    Why is |0| not defined? Of course it is. |0| = 0.

    Perhaps you are thinking of . Some books define to be 1; others leave it undefined.


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  4. #3  
    Moderator Moderator
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    More likely (perhaps) is that the notation implies and exist, and are not identical. Which is nonsense, of course
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