additive identity (Q2767837)
an element which, when added to any element x in the set, yields x
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aliases null-element
 neutral element for addition
description an element which, when added to any element x in the set, yields x

External Links
(P646) /m/0bndfh
(P2812) AdditiveIdentity
(P6366) 86441624
(P8855) 102-01-12