Quantifying Transversality by Measuring the Robustness of Intersections

Details Quantifying Transversality by Measuring the Robustness of Intersections Quantifying Transversality by Measuring the Robustness of Intersections

2009-11-11

arxiv.org/abs/0911.2142v2

Computer Science

Computational Geometry

Scientific paper

By definition, transverse intersections are stable under infinitesimal perturbations. Using persistent homology, we extend this notion to a measure. Given a space of perturbations, we assign to each homology class of the intersection its robustness, the magnitude of a perturbations in this space necessary to kill it, and prove that robustness is stable. Among the applications of this result is a stable notion of robustness for fixed points of continuous mappings and a statement of stability for contours of smooth mappings.

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