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Vanilla 1.1.10 is a product of Lussumo. More Information: Documentation, Community Support.
Added some more material. Note the comment about ordered groups and ordered groupoids … I have not really understood what is going on at that point with the Ehresmann correspondence between ordered groupoids and inverse semi-groups. I do not know, off hand, what an inverse semigroup having a single idempotent element looks like.
Renamed page in parallel to lattice-ordered ring and lattice-ordered abelian group. Also added table of contents and links to various related concepts and redirects for the page
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