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What is the zero in a plus o equals a?

Updated: 8/20/2019
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11y ago

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I presume you are asking what role 0 plays in that universal identity. The answer is: the additive identity. In general, the identity element in a group, ring, field etc. is the unique element (e) that does not change the value of any element (a) when you apply a binary operation to a and e. In most algebraic structures studied in elementary math, such as the field of real numbers under addition and multiplication, 1 is the multiplicative identity because a x 1 = a for all a.

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11y ago
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Q: What is the zero in a plus o equals a?
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