We study a class of maps of the unit interval with a neutral fixed point such as those modeling Pomeau-Manneville type 1 intermittency. We construct the invariant ergodic probability measure corresponding to a suitable (expanding) indice version of the original map and use it to prove the same result obtained by Collet, Galves and Schmitt for a piecewise linear model; i.e. that the distribution of the (suitably rescaled) return time in a vanishingly small neighborhood of the indifferent fixed point converges to a mean one exponential law.
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