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In mathematics, a bundle is a generalization of a fiber bundle dropping the condition of a local product structure. The requirement of a local product structure rests on the bundle having a topology. Without this requirement, more general objects can be considered bundles. For example, one can consider a bundle π: E → B with E and B sets.
In mathematics, a vector bundle is a topological construction that makes precise the idea of a family of vector spaces parameterized by another space (for example could be a topological space, a manifold, or an algebraic variety): to every point of the space we associate (or "attach") a vector space () in such a way that these vector spaces fit ...
Important examples of vector bundles include the tangent bundle and cotangent bundle of a smooth manifold. From any vector bundle, one can construct the frame bundle of bases, which is a principal bundle (see below). Another special class of fiber bundles, called principal bundles, are bundles on whose fibers a free and transitive action by a ...
Examples for vector bundles include: the introduction of a metric resulting in reduction of the structure group from a general linear group to an orthogonal group (); and the existence of complex structure on a real bundle resulting in reduction of the structure group from real general linear group (,) to complex general linear group (,).
A section of a tangent vector bundle is a vector field. A vector bundle E {\displaystyle E} over a base M {\displaystyle M} with section s {\displaystyle s} . In the mathematical field of topology , a section (or cross section ) [ 1 ] of a fiber bundle E {\displaystyle E} is a continuous right inverse of the projection function π ...
In mathematics, a metric connection is a connection in a vector bundle E equipped with a bundle metric; that is, a metric for which the inner product of any two vectors will remain the same when those vectors are parallel transported along any curve. [1] This is equivalent to: A connection for which the covariant derivatives of the metric on E ...