Geodesic
Multiplicities of Maxwell sets of Pham singularities
Funkcionalʹnyj analiz i ego priloženiâ, Tome 50 (2016) no. 3, pp. 73-76.

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A two-sided estimate of local multiplicities of Maxwell sets of isolated singularities of smooth functions is proved. This estimate is sharp for semi-homogeneous functions.
Keywords: Maxwell set, caustic, isolated singularity. 
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V. A. Vassiliev. Multiplicities of Maxwell sets of Pham singularities. Funkcionalʹnyj analiz i ego priloženiâ, Tome 50 (2016) no. 3, pp. 73-76. http://geodesic.mathdoc.fr/item/FAA_2016_50_3_a5/

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