As significant mathematics errors appear, they will be logged here. Most of the typographical errors (missing/extraneous spaces, mathematics in non-math font, etc.) are not listed.

**Section 2.1**: The solution to exercise 11(b) should be 31, not 30.**Section 10.1**The term*simple path*is not defined. Here is the definition we will use:**Definition**: A path in an undirected graph is a*simple path*if no edge edge of the graph appears more than once.Note: There are at least two non-equivalent definitions that appear in the literature. The other common one replaces the word

edge

with vertex.**Appendix E**:The line ---> order( *n*)Order of *a*should be ---> order( *a*)Order of *a*

Errata for V2.0----Errata for V3.0----Errata for V3.3----Errata for V3.3----No V3.4--Errata for V3.5