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arXiv · 1009.1842

Non-isoparametric solutions of the eikonal equation

Vladimir G. Tkachev
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Abstract

In this paper, we prove that a quartic polynomial solution of the eikonal equation $|\nabla_x f|^2=16x^{6}$ in $\R{n}$ is either an isoparametric polynomial or congruent to a polynomial $f=(\sum_{i=1}^n x_i^2)^2-8(\sum_{i=1}^k x_i^2)(\sum_{i=k+1}^{n} x_i^2)$, $k=0,1,\...,[\frac{n}{2}]$.

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Vladimir G. Tkachev. 2010-09-09. Non-isoparametric solutions of the eikonal equation. https://arxiv.org/abs/1009.1842

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