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• On a single server a delete followed by a child entry add would give an error, as would a child entry add followed by a delete. Perhaps this means we should just discard the second operation?
• Wiki MarkupIt all depends on the time of each operation. On A, we delete e1 at ti : *A.del(e1, ti)*. On B we add e2 under e1 at tj : B.add( e1/e2, tj). If ti < tj, then we have to rollback the addition on B. If ti > tj, then we have to rollback e1 deletion and add e2 on A : *ti < tj => A\[] & B\[]*; *ti > tj => A\[e1/e2] & B \ [e1/e2]*

3) We have 3 connected servers : A, B and C.

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