# Re: Would this solution be important? Is it already solved?

*From*: "Mountain" <dshiel@xxxxxxxxx>*Date*: 28 Apr 2006 12:58:52 -0700

I found the first part of the question. I still need to know if it

applies to DAGs (and I need to obtain the paper...).

D. Harel and R. E. Tarjan.

Fast algorithms for finding nearest common ancestors.

SIAM J. Comput., 13:338-355, 1984.

.

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