Gustafson, Karl E. Numerical Range : The field of values of linear operators and matrices / Karl E. Gustafson, Duggirala K.M. Rao. - 1a ed. - New York : Springer, c1997 - xiv, 189 p. : il. ; 23 cm. - (Universitext) . Incluye índice ISBN: 038794835X Subjects--Topical Terms: Analisis funcional Operadores lineales LC Class. No.: QA329.2 / G87 1997