In differential geometry, a Lie algebra-valued form is a differential form with values in a Lie algebra. Such forms have important applications in the theory of connections on a principal bundle as well as in the theory of Cartan connections.
A Lie algebra-valued differential k-form on a manifold, , is a smooth section of the bundle , where is a Lie algebra, is the cotangent bundle of and Λk denotes the kthexterior power.