Geodesic
On Finite Invariant Measure for Semigroups of Operators
Canadian mathematical bulletin, Tome 14 (1971) no. 2, pp. 197-206

Voir la notice de l'article provenant de la source Cambridge University Press

Let Σ be a left amenable semigroup, and let {T σ: σ ∊ Σ} be a representation of Σ as a semigroup of positive linear contraction operators on L 1(X, , p). This paper is devoted to the study of existence of a finite equivalent invariant measure for such semigroups of operators. 
Sachdevao, Usha. On Finite Invariant Measure for Semigroups of Operators. Canadian mathematical bulletin, Tome 14 (1971) no. 2, pp. 197-206. doi: 10.4153/CMB-1971-035-2
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