A NOTE ON THE L 1-MEAN ERGODIC THEOREM

Mar´ Mar´ia, Elena Mar´ia, Becker
unpublished
Let T be a positive contraction on L 1 of a σ-finite measure space. Necessary and sufficient conditions are given in order that for any f in L 1 the averages 1 n P n−1 i=0 T i f converge in the norm of L 1 .
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