let z be Element of COMPLEX ; :: thesis: for n being Element of NAT holds 0 <= (|.z.| rExpSeq) . n
let n be Element of NAT ; :: thesis: 0 <= (|.z.| rExpSeq) . n
(|.z.| rExpSeq) . n = |.((z ExpSeq) . n).| by Th4;
hence 0 <= (|.z.| rExpSeq) . n by COMPLEX1:46; :: thesis: verum