Preprint A608/2008
Invariant measures for interval maps with critical points and singularities
Marcelo Viana | Araujo, Vitor | Luzzatto, Stefano
Keywords: invariant measure | critical point | interval map
We prove that, under a mild summability condition on the growth of the derivative on critical orbits any piecewise monotone interval map possibly containing discontinuities and singularities with infinite derivative (cusp map) admits ergodic invariant probability measures which is absolutely continuous with respect to Lebesgue measure.