A General Approach to Equivariant Biharmonic Maps |
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Authors: | Stefano Montaldo Andrea Ratto |
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Institution: | 1. Università degli Studi di Cagliari, Dipartimento di Matematica e Informatica, Via Ospedale 72, 09124, Cagliari, Italia 2. Università degli Studi di Cagliari, Dipartimento di Matematica e Informatica, Viale Merello 93, 09123, Cagliari, Italia
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Abstract: | In this paper we describe a 1-dimensional variational approach to the analytical construction of equivariant biharmonic maps. Our goal is to provide a direct method which enables analysts to compute directly the analytical conditions which guarantee biharmonicity in the presence of suitable symmetries. In the second part of our work, we illustrate and discuss some examples. In particular, we obtain a 1-dimensional stability result, and also show that biharmonic maps do not satisfy the classical maximum principle proved by Sampson for harmonic maps. |
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