Bose, C. J.Grzegorczyk, P.2010-04-212010-04-2119932010-04-21http://hdl.handle.net/1828/2637Let T be a generalized baker's transformation on the unit square with cut function f. We show that if f is monotone non-increasing and bounded away from zero and one then T is ergodic. No topological conditions on f are assumed. Moreover, we prove in this case that T has a weak-Bernoulli generator. Both of these results follow from an exponential rate of contraction in variation by the related Perron-Frobenius operator. The connection between these results and similar facts for interval maps and g-measures is describedentechnical reports (mathematics and statistics)Technical ReportDepartment of Mathematics and Statistics