In the satellite meeting in Oxford in April, V. Slastikov reported on our joint work with R. Ignat and A. Zarnescu on the stability/instability of the radial hedgehog in the context of Landau-de Gennes theory. In this talk we discuss the existence and uniqueness of such solution. A comparison principle for (singular) nonlinear and radially symmetric elliptic equations will also be presented.
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