Index 317 valency of a vertex, 222 Vandermonde matrix, 34, 167 vector norms, 113–116 vector space, 1 vertex degree of, 222 initial, 235 isolated, 222 terminal, 235 vertices of a graph, 169, 221 walk closed, 224 directed, 236 open, 224 walk in a graph, 224 Weyr, 60 Weyr characteristic, 60–61 Weyr normal form, 67–68 Wielandt, 154, 179 Williamson, 212–216 Witt cancellation theorem, 200 (0, 1)-matrix, 169 zero matrix, 5 zero-one matrix, 169

Purchased from American Mathematical Society for the exclusive use of nofirst nolast (email unknown) Copyright 2015 American Mathematical Society. Duplication prohibited. Please report unauthorized use to cust-serv@ams.org. Thank You! Your purchase supports the AMS' mission, programs, and services for the mathematical community.