Abstract
In this paper, the reduction of the biharmonic map equation in terms of the Maurer‐Cartan form for all smooth maps of a compact Riemannian manifold into a compact Lie group (G,h) with the bi‐invariant Riemannian metric h is obtained. Due to this formula, all biharmonic curves into compact Lie groups are determined, and all the biharmonic maps of an open domain of R2, equipped with a Riemannian metric conformal to the standard Euclidean metric, into (G,h) are determined. Biharmonic maps into symmetric spaces are also treated.
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