CC BY-NC-SA 3.0 UnportedSolomon, Tom2022-08-042022-08-042015https://oa.tib.eu/renate/handle/123456789/9849http://dx.doi.org/10.34657/8887Very simple mathematical equations can give rise to surprisingly complicated, chaotic dynamics, with behavior that is sensitive to small deviations in the initial conditions. We illustrate this with a single recurrence equation that can be easily simulated, and with mixing in simple fluid flows.enghttps://creativecommons.org/licenses/by-nc-sa/3.0/510Numerics and Scientific ComputingReport7 S.