Talk:Additive inverse

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Mathematics rating:	Start Class	Low Priority	Field: Algebra
Please update this rating as the article progresses, or if the rating is inaccurate. Click to show/hide comments. Please add to or update the comments to suggest improvements to the article. Needs references. Geometry guy 01:06, 15 June 2007 (UTC)

should read:

• "In mathematics,..."
• ... in an additively noted abelian group ...
• ... opposite of ring elements (matrices, functions, ...)...
• ... if there is a unit element (in K for a K-module), then -x = (-1)·x

[edit] Universal construction

"to do: symmetrization of an abelian semigroup"

-- Moved the above section to this page until it can be completed.

Meersan 22:43, 8 February 2006 (UTC)