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    Sachin114's Avatar
    Sachin114 Posts: 1, Reputation: 1
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    #1

    May 23, 2016, 09:55 PM
    Why is equal to sign written with three lines sometimes?
    Why is equal to sign written with three lines sometimes?
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    May 24, 2016, 05:41 AM
    There are a couple of different uses for the symbol. Usually it signifies that the two objects on either side are identical, as opposed to the equal sign which symbolizes that the two objects have the same value. It's also used in modular arithmetic, for example:



    which is pronounced as "a is congruent to b mod m."
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