On the Jager-Kaul theorem concerning harmonic maps
Date
2000
Authors
Hong, M-C
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Gauthier-Villars
Abstract
In 1983, Jäger and Kaul proved that the equator map u*(x) = (x/|x|, 0) : Bn → Sn is unstable for 3 ≤ n ≤ 6 and a minimizer for the energy functional E(u, Bn) = ∫Bn |∇u|2dx in the class H1,2(Bn, Sn) with u = u* on ∂ Bn when n ≥ 7. In this pa
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Annales de l Institut Henri Poincare
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2037-12-31
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