On the spectrum of C, as an operator on bv

On the spectrum of C, as an operator on bv

In 1985 John Reade determined the spectrum of the Cesâro Operatör which is repre- sented by the matrix: / I 0 0 . . . \ C ı — ı 2 0 ... I regarded as an operatör on the space co of ali null sequences normed by || x j| = sup [ xn [. n> 0 It is the purpose of this paper to determine the spectrum of regarded as an operatör on the 00 space bv of ali sequences x such that lim xn exists and ][ x || = lim | xn 4- 2 ]xn + l-xn | n—>Oo n->00 n=0 < 00 We do so by proving that (C , - XI)-1 GB (bv) for ali XeC such that [ X- | > i •

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  • Communications, Series A1:Mathematics and Statistics