Geodesic
The Geometry of a Singular Set of Hypersurfaces and the Eikonal Equation
Matematičeskie zametki, Tome 108 (2020) no. 3, pp. 441-451.

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Smooth solutions of the eikonal equation are studied. A relationship between the geometry of a hypersurface and the set of singular points of its metric function on both sides of this hypersurface is investigated.
Mots-clés : eikonal equation
Keywords: singular set, regular point, sun point. 
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I. G. Tsar'kov. The Geometry of a Singular Set of Hypersurfaces and the Eikonal Equation. Matematičeskie zametki, Tome 108 (2020) no. 3, pp. 441-451. http://geodesic.mathdoc.fr/item/MZM_2020_108_3_a8/

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