manifold, stable manifold, unstable manifold, subcenter manifold and inertial manifold. Typically, although by no means always, invariant manifolds are...
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to a nearby stable manifold and nearby unstable manifold. These three types of manifolds are three cases of an invariant manifold. Corresponding to the...
18 KB (2,574 words) - 15:53, 14 February 2024
manifold has a topological invariant, its dimension. For most applications, a special kind of topological manifold, namely, a differentiable manifold...
69 KB (9,547 words) - 19:07, 12 June 2025
Nonlinear dimensionality reduction (redirect from Manifold learning)
a manifold in high-dimensional space, and the intrinsic variables of that manifold will represent the robot's position and orientation. Invariant manifolds...
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A normally hyperbolic invariant manifold (NHIM) is a natural generalization of a hyperbolic fixed point and a hyperbolic set. The difference can be described...
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given a bi-invariant Riemannian metric if and only if it is the product of a compact Lie group with an abelian Lie group. A Riemannian manifold (M, g) is...
59 KB (8,684 words) - 09:42, 28 May 2025
respective manifolds. Hyperbolic 3-manifold Hyperbolic space Hyperbolization theorem Margulis lemma Normally hyperbolic invariant manifold Kapovich, Michael...
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respectively. Invariant manifold Center manifold Limit set Julia set Slow manifold Inertial manifold Normally hyperbolic invariant manifold Lagrangian coherent...
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{\displaystyle K} of a two-dimensional Riemannian manifold ( M , g ) {\displaystyle (M,g)} is invariant under changes of the Riemannian metric g {\displaystyle...
24 KB (2,787 words) - 13:39, 3 April 2025
pseudoholomorphic curves meeting prescribed conditions in a given symplectic manifold. The GW invariants may be packaged as a homology or cohomology class in an appropriate...
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Kervaire invariant is an invariant of a framed ( 4 k + 2 ) {\displaystyle (4k+2)} -dimensional manifold that measures whether the manifold could be surgically...
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Signature (topology) (redirect from Signature of a manifold)
signature is an integer invariant which is defined for an oriented manifold M of dimension divisible by four. This invariant of a manifold has been studied in...
5 KB (795 words) - 22:35, 21 May 2025
In mathematics, the eta invariant of a self-adjoint elliptic differential operator on a compact manifold is formally the number of positive eigenvalues...
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and especially gauge theory, Seiberg–Witten invariants are invariants of compact smooth oriented 4-manifolds introduced by Edward Witten (1994), using the...
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acting on a real infinite-dimensional reflexive space. Invariant manifold Lomonosov's invariant subspace theorem Roman 2008, p. 73 §2 Roman 2008, p. 73...
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Arf invariant is particularly applied in geometric topology, where it is primarily used to define an invariant of (4k + 2)-dimensional manifolds (singly...
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is defined to be the invariant manifold on which the dynamics are slow compared to the dynamics off the manifold. The slow manifold in a particular problem...
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In mathematics, a differentiable manifold (also differential manifold) is a type of manifold that is locally similar enough to a vector space to allow...
67 KB (9,497 words) - 20:48, 13 December 2024
networks of coupled oscillators where the system typically orbits in an invariant manifold with a chaotic attractor (where the peak trajectories are low), but...
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framed links also give rise to invariants of 3-manifolds via the Dehn surgery construction. These invariants were discovered by Nicolai Reshetikhin and Vladimir...
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mathematical physics, a pseudo-Riemannian manifold, also called a semi-Riemannian manifold, is a differentiable manifold with a metric tensor that is everywhere...
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estimate the probability of rare events. Sritharan, S.S. (2019), Invariant Manifold Theory for Hydrodynamic Transition, Courier Dover Publications, ISBN 9780486828282...
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Contact geometry (redirect from Contact manifold)
conjecture, by Michael Hutchings to define an invariant of smooth three-manifolds, and by Lenhard Ng to define invariants of knots. It was also used by Yakov Eliashberg...
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the classification of all smooth manifolds up to diffeomorphism. Since dimension is an invariant of smooth manifolds up to diffeomorphism type, this classification...
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{M}}(t_{0})} yields an invariant manifold M ∈ P × I {\displaystyle {\mathcal {M}}\in {\mathcal {P}}\times {\mathcal {I}}} , invariant manifolds and their associated...
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homeomorphism type of the manifold only depends on this intersection form, and on a Z / 2 Z {\displaystyle \mathbb {Z} /2\mathbb {Z} } invariant called the Kirby–Siebenmann...
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Floer homology (category 3-manifolds)
the (universal cover of the) free loop space of a symplectic manifold. SFH is invariant under Hamiltonian isotopy of the symplectomorphism. Here, nondegeneracy...
37 KB (4,650 words) - 15:56, 6 April 2025
Chern–Simons theory (redirect from Witten-Reshetikhin-Turaev invariant)
states. In mathematics, it has been used to calculate knot invariants and three-manifold invariants such as the Jones polynomial. Particularly, Chern–Simons...
27 KB (3,591 words) - 12:48, 25 May 2025
Rokhlin's theorem (redirect from Rokhlin invariant)
signature of a spin smooth manifold is divisible by 16, the definition of the Rokhlin invariant is deduced as follows: For 3-manifold N {\displaystyle N} and...
10 KB (1,517 words) - 17:15, 21 December 2023
Poisson manifold is a smooth manifold endowed with a Poisson structure. The notion of Poisson manifold generalises that of symplectic manifold, which in...
87 KB (12,665 words) - 19:35, 11 June 2025