Results 11 to 20 of about 173,424 (246)

Ergodicity Space for Measure-Preserving Transformations [PDF]

open access: yesChinese Journal of Mathematics, 2016
We introduce the concept of ergodicity space of a measure-preserving transformation and will present some of its properties as an algebraic weight for measuring the size of the ergodicity of a measure-preserving transformation. We will also prove the invariance of the ergodicity space under conjugacy of dynamical systems.
M. Rahimi, A. Assari
openaire   +2 more sources

Fourier Transforms and Measure-Preserving Transformations [PDF]

open access: yesProceedings of the American Mathematical Society, 1974
There exists a continuous function f f on the real line, vanishing at infinity, such that, for every measure-preserving transformation h h , the composition f ∘ h f \circ h fails to be a Fourier transform.
openaire   +1 more source

Multiple recurrence for non-commuting transformations along rationally independent polynomials [PDF]

open access: yes, 2017
We prove a multiple recurrence result for arbitrary measure-preserving transformations along polynomials in two variables of the form $m+p_i(n)$, with rationally independent $p_i$'s with zero constant term. This is in contrast to the single variable case,
Frantzikinakis, Nikos   +1 more
core   +1 more source

The spectral measure and Hilbert transform of a measure-preserving transformation [PDF]

open access: yesTransactions of the American Mathematical Society, 1989
V. F. Gaposhkin gave a condition on the spectral measure of a normal contraction on L 2 {L^2} sufficient to imply that the operator satisfies the pointwise ergodic theorem. We prove that unitary operators which come from measure-preserving transformations satisfy a stronger version of this condition.
Campbell, James, Petersen, Karl
openaire   +1 more source

On Partially Trace Distance Preserving Maps and Reversible Quantum Channels

open access: yesJournal of Applied Mathematics, 2013
We give a characterization of trace-preserving and positive linear maps preserving trace distance partially, that is, preservers of trace distance of quantum states or pure states rather than all matrices.
Long Jian, Kan He, Qing Yuan, Fei Wang
doaj   +1 more source

Recurrence of cocycles and stationary random walks [PDF]

open access: yes, 2006
We survey distributional properties of $\mathbb{R}^d$-valued cocycles of finite measure preserving ergodic transformations (or, equivalently, of stationary random walks in $\mathbb{R}^d$) which determine recurrence or transience.Comment: Published at ...
Klaus Schmidt, Klaus Schmidt
core   +4 more sources

Generic behavior of a measure-preserving transformation [PDF]

open access: yesErgodic Theory and Dynamical Systems, 2018
Del Junco–Lemańczyk [Generic spectral properties of measure-preserving maps and applications. Proc. Amer. Math. Soc., 115 (3) (1992)] showed that a generic measure-preserving transformation satisfies certain orthogonality conditions. More precisely, there is a dense $G_{\unicode[STIX]{x1D6FF}}$ subset of measure preserving transformations such that ...
openaire   +3 more sources

Invariance of Poisson measures under random transformations [PDF]

open access: yes, 2011
We prove that Poisson measures are invariant under (random) intensity preserving transformations whose finite difference gradient satisfies a cyclic vanishing condition.
Privault, Nicolas
core   +2 more sources

Infinite Dimensional Maximal Torus Revisited

open access: yesMathematics
Let Tm be the maximal torus of a set of m×m unitary diagonal matrices. Let T be a collection of all maps that rigidly rotate every circle of latitude of the sphere with a fixed angle.
Mohamed Lemine H. Bouleryah   +2 more
doaj   +1 more source

The measure in three dimensional Nambu-Goto string theory

open access: yes, 1996
We show that the measure of the three dimensional Nambu-Goto string theory has a simple decomposition as a measure on two parameter group of induced area-preserving transformations of the immersed surface and a trivial measure for the area of the surface.
A. Sedrakyan   +14 more
core   +1 more source

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