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Published online by Cambridge University Press:  16 June 2011

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We study one-forms with zero wedge-product, which we call collinear, and their foliations. We characterise the set of forms that define a given foliation, with special attention to closed forms and forms with small singular sets. We apply the notion of collinearity to give a criterion for the existence of a compact leaf and to study homological properties of compact leaves.

MSC classification

Research Article
Copyright © Australian Mathematical Publishing Association Inc. 2011


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