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The singular evolutoids set and the extended evolutoids front

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Abstract

In this paper we introduce the notion of the singular evolutoid set which is the set of all singular points of all evolutoids of a fixed smooth planar curve with at most cusp singularities. By the Gauss-Bonnet Theorem for Coherent Tangent Bundles over Surfaces with Boundary (Theorem 2.20 in [4]) applied to the extended front of evolutoids of a hedgehog we obtain an integral equality for smooth periodic curves.

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Correspondence to Michał Zwierzyński.

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Zwierzyński, M. The singular evolutoids set and the extended evolutoids front. Aequat. Math. 96, 849–866 (2022). https://doi.org/10.1007/s00010-022-00873-7

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