We show that a dissipative, ergodic measure preserving transformation of a σ-finite, non-atomic measure space always has many non-proportional, absolutely continuous, invariant measures and is ergodic with respect to each one of these.
@article{bwmeta1.element.bwnjournal-article-doi-10_4064-cm110-1-7,
author = {Jon Aaronson and Tom Meyerovitch},
title = {Absolutely continuous, invariant measures for dissipative, ergodic transformations},
journal = {Colloquium Mathematicae},
volume = {111},
year = {2008},
pages = {193-199},
zbl = {1142.37002},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-cm110-1-7}
}
Jon Aaronson; Tom Meyerovitch. Absolutely continuous, invariant measures for dissipative, ergodic transformations. Colloquium Mathematicae, Tome 111 (2008) pp. 193-199. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-cm110-1-7/