User blog comment:Edwin Shade/A Complete Analysis of Taranovsky's Notation/@comment-32697988-20180127233730/@comment-32876686-20180127234028

Because as \(C(0,0)=1\), and \(C(1,0)\) describes the fixed point \(\xi=C(0,\xi)\), or \(\omega\), we can write \(\omega\) as \(C(C(0,0),0)\).