Results 21 to 30 of about 225,328 (312)

Nijenhuis operators on pre-Lie algebras [PDF]

open access: yesCommunications in Contemporary Mathematics, 2017
First we use a new approach to define a graded Lie algebra whose Maurer–Cartan elements characterize pre-Lie algebra structures. Then using this graded Lie bracket, we define the notion of a Nijenhuis operator on a pre-Lie algebra which generates a ...
Qi Wang, C. Bai, Jiefeng Liu, Y. Sheng
semanticscholar   +1 more source

The classification problem for automorphisms of C*-algebras [PDF]

open access: yes, 2015
We present an overview of the recent developments in the study of the classification problem for automorphisms of C*-algebras from the perspective of Borel complexity theory.Comment: 21 ...
Lupini, Martino
core   +2 more sources

The varieties of Heisenberg vertex operator algebras

open access: yes, 2016
For a vertex operator algebra $V$ with conformal vector $\omega$, we consider a class of vertex operator subalgebras and their conformal vectors.
Chu, Yanjun, Lin, Zongzhu
core   +1 more source

The pre-Lie structure of the time-ordered exponential

open access: yes, 2013
The usual time-ordering operation and the corresponding time-ordered exponential play a fundamental role in physics and applied mathematics. In this work we study a new approach to the understanding of time-ordering relying on recent progress made in the
Ebrahimi-Fard, Kurusch, Patras, Frederic
core   +1 more source

On the Homology Theory of Operator Algebras

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2012
We investigate the cyclic homology and free resolution effect of a commutative unital Banach algebra. Using the free resolution operator, we define the relative cyclic homology of commutative Banach algebras. Lemmas and theorems of this investigation are
Alaa Hassan Noreldeen Mohamed
semanticscholar   +1 more source

DIAGONALS IN TENSOR PRODUCTS OF OPERATOR ALGEBRAS [PDF]

open access: yesProceedings of the Edinburgh Mathematical Society, 2001
In this paper we give a short, direct proof, using only properties of the Haagerup tensor product, that if an operator algebra $A$ possesses a diagonal in the Haagerup tensor product of $A$ with itself, then $A$ must be isomorphic to a finite-dimensional
V. Paulsen, Roger R. Smith
semanticscholar   +1 more source

An intrinsic order-theoretic characterization of the weak expectation property [PDF]

open access: yes, 2017
We prove the following characterization of the weak expectation property for operator systems in terms of Wittstock's matricial Riesz separation property: an operator system $S$ satisfies the weak expectation property if and only if $M_{q}(S)$ satisfies ...
Lupini, Martino
core   +2 more sources

VTUFileHandler: A VTU library in the Julia language that implements an algebra for basic mathematical operations on VTU data

open access: yesJournal of Open Source Software, 2022
A VTU library in the Julia language that implements an algebra for basic mathematical operations on VTU data.
openaire   +1 more source

Reversibility conditions for quantum channels and their applications

open access: yes, 2013
A necessary condition for reversibility (sufficiency) of a quantum channel with respect to complete families of states with bounded rank is obtained. A full description (up to isometrical equivalence) of all quantum channels reversible with respect to ...
A. S. Holevo   +13 more
core   +1 more source

SOME EXTREMELY AMENABLE GROUPS RELATED TO OPERATOR ALGEBRAS AND ERGODIC THEORY [PDF]

open access: yesJournal of the Institute of Mathematics of Jussieu, 2004
A topological group $G$ is called extremely amenable if every continuous action of $G$ on a compact space has a fixed point. This concept is linked with geometry of high dimensions (concentration of measure).
T. Giordano, V. Pestov
semanticscholar   +1 more source

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