Erratum

In the article "Algorithms for Chordal Analysis" by Bryan Pardo and William P. Birmingham (CMJ 26(2), Summer 2002), two errors occurred on page 39. The phrase "While O(n²) is better than O(n²)" should instead read "While O(n²) is better than O(2ⁿ)." Within each direct acyclic graph in Figure 12, as well as on the back cover, the second oval from the left should contain the number 2_i in some cases it mistakenly contains the numer 3.