Complex sentence: He and his co-authors (Judy Kennedy, Edward Ott and James A. Yorke) have explored a fluid flow which is temporally periodic flow with a time varying perturbation and they showed the presence of indecomposable continua associated to the chaotic dynamics of the fluids.
Split into simpler sentences: He and his co-authors (Judy Kennedy, Edward Ott and James A. Yorke) have explored a temporally periodic flow with a time varying perturbation. In this flow, they showed the presence of indecomposable continua associated to the chaotic dynamics of the fluids.