### **Homework 13, Fundamental Algorithms, Fall 97**

Due Date: Monday, December 8.

Problems 4.20, 4.21, 6.2, 6.4. (See back of text, page 406-411).

Comment: The reduced graph H of a directed graph G is defined as follows.
For each strong component C of G there is a vertex c in H; there is a
directed edge (c,d) in H exactly if there is a directed edge (v,w) in G,
with v in strong component C and w in strong component D.

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Last modified: Nov 25, 1997