In this paper, some sufficient and necessary conditions for the composition operator C phi to be 2-normal are investigated when the symbol phi is a linear fractional self-map of D.
机构:
Calif Polytech State Univ San Luis Obispo, Dept Math, San Luis Obispo, CA 93407 USACalif Polytech State Univ San Luis Obispo, Dept Math, San Luis Obispo, CA 93407 USA