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  2. Symplectic manifold - Wikipedia

    en.wikipedia.org/wiki/Symplectic_manifold

    Symplectic manifolds arise from classical mechanics; in particular, they are a generalization of the phase space of a closed system. [1] In the same way the Hamilton equations allow one to derive the time evolution of a system from a set of differential equations, the symplectic form should allow one to obtain a vector field describing the flow of the system from the differential of a ...

  3. Lie group action - Wikipedia

    en.wikipedia.org/wiki/Lie_group_action

    Michele Audin, Torus actions on symplectic manifolds, Birkhauser, 2004 John Lee, Introduction to smooth manifolds , chapter 9, ISBN 978-1-4419-9981-8 Frank Warner, Foundations of differentiable manifolds and Lie groups , chapter 3, ISBN 978-0-387-90894-6

  4. Congruence (manifolds) - Wikipedia

    en.wikipedia.org/wiki/Congruence_(manifolds)

    Introduction to smooth manifolds. New York: Springer. ISBN 0-387-95448-1. A textbook on manifold theory. See also the same author's textbooks on topological manifolds (a lower level of structure) and Riemannian geometry (a higher level of structure).

  5. Distribution (differential geometry) - Wikipedia

    en.wikipedia.org/wiki/Distribution_(differential...

    Let be a smooth manifold; a (smooth) distribution assigns to any point a vector subspace in a smooth way. More precisely, consists of a collection {} of vector subspaces with the following property: Around any there exist a neighbourhood and a collection of vector fields, …, such that, for any point , span {(), …, ()} =.

  6. Pushforward (differential) - Wikipedia

    en.wikipedia.org/wiki/Pushforward_(differential)

    If a map, φ, carries every point on manifold M to manifold N then the pushforward of φ carries vectors in the tangent space at every point in M to a tangent space at every point in N. In differential geometry , pushforward is a linear approximation of smooth maps (formulating manifold) on tangent spaces.

  7. Exhaust manifold - Wikipedia

    en.wikipedia.org/wiki/Exhaust_manifold

    In automotive engineering, an exhaust manifold collects the exhaust gases from multiple cylinders into one pipe. The word manifold comes from the Old English word manigfeald (from the Anglo-Saxon manig [many] and feald [fold]) [1] and refers to the folding together of multiple inputs and outputs (in contrast, an inlet or intake manifold ...

  8. Fundamental vector field - Wikipedia

    en.wikipedia.org/wiki/Fundamental_vector_field

    Important to applications in mathematics and physics [1] is the notion of a flow on a manifold. In particular, if M {\displaystyle M} is a smooth manifold and X {\displaystyle X} is a smooth vector field , one is interested in finding integral curves to X {\displaystyle X} .

  9. Differential topology - Wikipedia

    en.wikipedia.org/wiki/Differential_topology

    In mathematics, differential topology is the field dealing with the topological properties and smooth properties [a] of smooth manifolds.In this sense differential topology is distinct from the closely related field of differential geometry, which concerns the geometric properties of smooth manifolds, including notions of size, distance, and rigid shape.