Results 11 to 20 of about 35,702 (155)

On local linearization of control systems [PDF]

open access: yes, 2009
We consider the problem of topological linearization of smooth (C infinity or real analytic) control systems, i.e. of their local equivalence to a linear controllable system via point-wise transformations on the state and the control (static feedback ...
A Juditsky   +23 more
core   +5 more sources

Background independent quantizations: the scalar field II [PDF]

open access: yes, 2006
We are concerned with the issue of quantization of a scalar field in a diffeomorphism invariant manner. We apply the method used in Loop Quantum Gravity. It relies on the specific choice of scalar field variables referred to as the polymer variables. The
Andrzej Okołów   +26 more
core   +2 more sources

Linearization of homeomorphism groups [PDF]

open access: yesProceedings of the American Mathematical Society, 1975
A theorem of Beboutov and Kakutani is extended to a large class of homeomorphism groups.
openaire   +2 more sources

New cw-expansive homeomorphisms of surfaces [PDF]

open access: yes, 2019
In this article we characterize monotone extensions of cw-expansive homeomorphisms of compact metric spaces. We study the topology of its quotient space in the case of a compact surface.
Achigar, Mauricio   +2 more
core   +3 more sources

Groups of piecewise linear homeomorphisms of flows [PDF]

open access: yesCompositio Mathematica, 2020
To every dynamical system$(X,\varphi )$over a totally disconnected compact space, we associate a left-orderable group$T(\varphi )$. It is defined as a group of homeomorphisms of the suspension of$(X,\varphi )$which preserve every orbit of the suspension flow and act by dyadic piecewise linear homeomorphisms in the flow direction.
Matte Bon, Nicolás, Triestino, Michele
openaire   +5 more sources

Asymptotic Properties of -Expansive Homeomorphisms on a Metric -Space

open access: yesAbstract and Applied Analysis, 2012
We define and study the notions of positively and negatively -asymptotic points for a homeomorphism on a metric -space. We obtain necessary and sufficient conditions for two points to be positively/negatively -asymptotic.
Ruchi Das, Tarun Das
doaj   +1 more source

Robust Stability of Complex-Valued Stochastic Neural Networks with Time-Varying Delays and Parameter Uncertainties

open access: yesMathematics, 2020
In practical applications, stochastic effects are normally viewed as the major sources that lead to the system’s unwilling behaviours when modelling real neural systems. As such, the research on network models with stochastic effects is significant.
Pharunyou Chanthorn   +6 more
doaj   +1 more source

Linearization of a Contractive Homeomorphism [PDF]

open access: yesCanadian Journal of Mathematics, 1968
Let X be a topological space and ϕ: X ⟶ X a continuous self-mapping of X. We say that ϕ is linearized in L by Φ if there exists a topological embedding μ: X ⟶ L of the space X into the linear topological vector space L such that for all x ϵ X, μ (ϕ (x)) = Φ (μ (x)), where ϕ is a continuous linear operator on L.
openaire   +3 more sources

Hopf differentials and smoothing Sobolev homeomorphisms [PDF]

open access: yes, 2010
We prove that planar homeomorphisms can be approximated by diffeomorphisms in the Sobolev space $W^{1,2}$ and in the Royden algebra. As an application, we show that every discrete and open planar mapping with a holomorphic Hopf differential is harmonic ...
Iwaniec, Tadeusz   +2 more
core   +3 more sources

Piecewise linear homeomorphisms: the scalar case

open access: yesProceedings of the IEEE-INNS-ENNS International Joint Conference on Neural Networks. IJCNN 2000. Neural Computing: New Challenges and Perspectives for the New Millennium, 2000
The class of piecewise linear homeomorphisms (PLH) provides a convenient functional representation for many applications wherein an approximation to data is required that is invertible in closed form. In this paper we introduce the graph intersection (GI) algorithm for "learning" piecewise linear scalar functions in two settings: "approximation", where
Richard E. Groff   +2 more
openaire   +2 more sources

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