Results 161 to 170 of about 4,370 (257)

On commutators of idempotents

open access: yesLinear and Multilinear Algebra
Let $T$ be an operator on Banach space $X$ that is similar to $- T$ via an involution $U$. Then $U$ decomposes the Banach space $X$ as $X = X_1 \oplus X_2$ with respect to which decomposition we have $U = \left(\begin{matrix} I_1 & 0 \\ 0 & -I_2 \end{matrix} \right)$, where $I_i$ is the identity operator on the closed subspace $X_i$ ($i=1, 2$).
openaire   +3 more sources

Extrapolation and commutators of singular integrals

open access: yes, 1994
l. Introduction In these notes we shall present results concerning LP inequalities with different but related weights for commutators of singular and strongly singular integrals.
Segovia, Carlos
core  

Weighted sharp boundedness for multilinear commutators

open access: yes, 2006
In this paper, the sharp estimates for some multilinear commutators related to certain sublinear integral operators are obtained. The operators include Littlewood-Paley operator and Marcinkiewicz operator. As application, we obtain the weighted Lp (p >
Xu, Hong, Liu, Lanzhe, Zeng, Jiasheng
core  

Transcorrelated Theory with Pseudopotentials. [PDF]

open access: yesJ Chem Theory Comput
Simula K   +6 more
europepmc   +1 more source

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