Erratum: Periods of non-expansive operators on finite \(\ell_ 1\)-spaces (Q756102)

The author states that Theorem 4.1 in his previous paper [Europ. J. Combinatorics 9, 73-81 (1988; Zbl 0639.47046)] is false. The correct version reads as follows. Let T: \(L\to L\) be nonexpansive with \(T(0)=0\). Then there exists \(p\in {\mathbb{N}}\) such that \((T^{pn}x)_ n\) converges for all \(x\in L\).