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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References
Aguilar-Arteaga, V.A., Ayala-Figueroa, R., González-Garcia, I., Jerónimo-Castro, J.: On evolutoids of planar convex curves II. Aequat. Math. 89, 1433–1447 (2015)
Cambraia Jr. A., Lemos, A.: On Affine Evolutoids, Quaestiones Mathematicae 1–10 (2018)
Domitrz, W., Romero Fuster, M.C., Zwierzyński, M.: The geometry of the secant caustic of a planar curve. Differ. Geom. Its Appl. 78, 101797 (2021)
Domitrz, W., Zwierzyński, M.: The gauss-bonnet theorem for coherent tangent bundles over surfaces with boundary and its applications. J. Geom. Anal. 30, 3243–3274 (2020)
Domitrz, W., Zwierzyński, M.: The Gometry of the Wigner caustic and a decomposition of a curve into parallel arcs. Anal. Math. Phys. 12, 7 (2022)
Giblin, P.J., Warder, J.P.: Evolving evolutoids. Am. Math. Monthly 121, 871–889 (2014)
Golubitsky, M., Guillemin, V.: Stable Mappings and Their Singularities. Springer, Berlin (1974)
Hamman, M.: A note on ovals and their evolutoids. Beitrage zur Algebra und Geometrie 50, 433–441 (2009)
Jerónimo-Castro, J.: On evolutoids of planar convex curves. Aequat. Math. 88, 97–103 (2014)
Jerónimo-Castro, J., Rojas-Tapia, M.A., Velasco-Garcia, U., Yee-Romero, C.: As isoperimetric inequality for isoptic curves of convex bodies. Results Math. 75, 134 (2020)
Martinez-Maure, Y.: Geometric Inequalities for Plane Hedgehogs, Demonstratio Mathematica, Vol. XXXII, No 1, (1999)
Martinez-Maure, Y.: New notion of index for hedgehogs of \(\mathbb{R}^3\) and applications, Rigidity and related topics in Geometry. Eur. J. Combin. 31, 1037–1049 (2010)
Martinez-Maure, Y.: Uniqueness results for the Minkowski problem extended to hedgehogs, Central European. J. Math. 10, 440–450 (2012)
Martins, L.F., Saji, K.: Geometric invariants of cuspidal edges. Canadian J. Math. 68(2), 445–462 (2016)
Martins, L.F., Saji, K., Umehara, M., Yamada, K.: Behavior of Gaussian curvature and mean curvature near non-degenerate singular points on wave fronts. Springer Proceedings in Mathematics & Statistics 154, 247–281 (2016)
Mozgawa, W., Skrzypiec, M.: Some properties of secantoptics of ovals. Beitr. Algebra Geom 53, 261–272 (2012)
Saji, K., Umeraha, M., Yamada, K.: Behavior of corank-one singular points on wave fronts. Kyushu J. Math. 62, 259–280 (2008)
Saji, K., Umeraha, M., Yamada, K.: The geometry of fronts. Ann. Math. 169, 491–529 (2009)
Saji, K., Umehara, M., Yamada, K.: Coherent tangent bundles and Gauss-Bonnet formulas for wave fronts. J. Geom. Anal. 22(2), 383–409 (2012)
Saji, K., Umehara, M., Yamada, K.: An index formula for a bundle homomorphism of the tangent bundle into a vector bundle of the same rank, and its applications. J. Math. Soc. Jpn. 69(1), 417–457 (2017)
Umehara, M., Yamada, K.: Differential Geometry of Curves and Surfaces. World Scientific Publishing, Singapore (2017)
Wolfram Research, Inc., Mathematica, Version 12.2, Champaign, IL (2020)
Zwierzyśki, M.: The Improved Isoperimetric Inequality and the Wigner Caustic of Planar Ovals. J. Math. Anal. Appl. 442(2), 726–739 (2016)
Zwierzyśki, M.: The Constant Width Measure Set, The Spherical Measure Set and Isoperimetric Equalities for Planar Ovals, arXiv:1605.02930
Zwierzyśki, M.: Isoperimetric equalities for rosettes. Int. J. Math. 31(05), 2050041 (2020)
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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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DOI: https://doi.org/10.1007/s00010-022-00873-7