Wandering subspaces and quasi-wandering subspaces in the Bergman space.
Wandering subspaces and the Beurling type theorem. II.
Wave Operators for Defocusing Matrix Zakharov-Shabat Systems with Pnonvanishing at Infinity
2000 Mathematics Subject Classification: Primary: 34L25; secondary: 47A40, 81Q10.In this article we prove that the wave operators describing the direct scattering of the defocusing matrix Zakharov-Shabat system with potentials having distinct nonzero values with the same modulus at ± ∞ exist, are asymptotically complete, and lead to a unitary scattering operator. We also prove that the free Hamiltonian operator is absolutely continuous.
Wave operators for momentum dependent long range potential
Wave operators for pairs of spaces and the Klein-Gordon equation.
Wavelet compression of anisotropic integrodifferential operators on sparse tensor product spaces
For a class of anisotropic integrodifferential operators arising as semigroup generators of Markov processes, we present a sparse tensor product wavelet compression scheme for the Galerkin finite element discretization of the corresponding integrodifferential equations u = f on [0,1]n with possibly large n. Under certain conditions on , the scheme is of essentially optimal and dimension independent complexity (h-1| log h |2(n-1)) without corrupting the convergence or smoothness requirements...
Weak almost periodicity of contractions and coboundaries of non-singular transformations
It is well known that a weakly almost periodic operator T in a Banach space is mean ergodic, and in the complex case, also λT is mean ergodic for every |λ|=1. We prove that a positive contraction on is weakly almost periodic if (and only if) it is mean ergodic. An example shows that without positivity the result is false. In order to construct a contraction T on a complex such that λT is mean ergodic whenever |λ|=1, but T is not weakly almost periodic, we prove the following: Let τ be an invertible...
Weak Approximation Of Minimal Norm Solutions Of First Kind Equations By Tikhonov's Method.
Weak* convergence of iterates of Lasota-Mackey-Tyrcha operators
Weak essential spectra of multiplication operators on spaces of bounded linear operators.
Weak- estimates and ergodic theorems.
Weak spectral equivalence and weak spectral convergence
Weak type inequalities for product operators
Weakly compact operators and -additive measures
Weighted ergodic theorems along subsequences of density zero.
Weighted ergodic theorems for weakly mixing transformation groups.
In this paper we characterize weakly mixing transformation groups in terms of weighted ergodic theorems.
Weighted Frobenius-Perron operators and their spectra
First, some classic properties of a weighted Frobenius-Perron operator on as a predual of weighted Koopman operator on will be investigated using the language of the conditional expectation operator. Also, we determine the spectrum of under certain conditions.
Weighted inequalities for the Hilbert transform and the adjoint operator in the continuous case
Weighted integral inequalities for the ergodic maximal operator and other sublinear operators. Convergence of the averages and the ergodic Hilbert transform
Weighted Lorentz norm inequalities for integral operators