# Connection Form

The connection form arises when applying the exterior connection to a particular frame e. Upon applying the exterior connection to the eα, it is the unique k × k matrixαβ) of one-forms on M such that

In terms of the connection form, the exterior connection of any section of E can now be expressed, for suppose that ξ = Σα eαξα. Then

Taking components on both sides,

where it is understood that d and ω refer to the exterior derivative and a matrix of 1-forms, respectively, acting on the components of ξ. Conversely, a matrix of 1-forms ω is a priori sufficient to completely determine the connection locally on the open set over which the basis of sections e is defined.

### Other articles related to "connection, connection form, form, forms, connection forms":

Ehresmann Connection - Special Cases - Principal Bundles and Principal Connections
... Then an Ehresmann connection H on E is said to be a principal (Ehresmann) connection if it is invariant with respect to the G action on E in the sense that for any e∈E and g∈G ... The connection form v of the Ehresmann connection may then be viewed as a 1-form ω on E with values in g defined by ω(X)=ι(v(X)) ... Thus reinterpreted, the connection form ω satisfies the following two properties It transforms equivariantly under the G action for all h∈G, where Rh* is the pullback under the ...
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... The approach of Cartan and Weyl, using connection 1-forms on the frame bundle of M, gives a third way to understand the Riemannian connection ... subspace is defined by a differential 1-form on the orthonormal frame bundle, the connection form ... This enabled the curvature properties of the surface to be encoded in differential forms on the frame bundle and formulas involving their exterior derivatives ...
Principal Bundles - Connection Forms Associated To A Principal Connection
... Conversely, a principal G-connection ω in a principal G-bundle P→M gives rise to a collection of connection forms on M ... Then the pullback of ω along e defines a g-valued one-form on M Changing frames by a G-valued function g, one sees that ω(e) transforms in the required manner by using the Leibniz rule, and the ...

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