Results 21 to 30 of about 15,515 (151)

Isometries of certain reflexive operator algebras

open access: yesJournal of Functional Analysis, 1991
Let \(L\) be a family of subspaces of a Hilbert space, and let \(A\) be the algebra of all operators leaving the elements of \(L\) invariant. The authors study the isometries of the Banach space \(A\) onto itself. Particular cases of this problem were studied before.
Moore, R.L, Trent, T.T
openaire   +1 more source

On some reflexive operator algebras constructed from two sets of closed operators and from a set of reflexive operator algebras [PDF]

open access: yesPacific Journal of Mathematics, 1987
The paper considers a new method of constructing operator algebras \(\mathcal A\) from two given sets of closed operators \(\{F_ i\}^{n-1}_{i=1}\), \(\{G_ i\}^{n-1}_{i=1}\) and from a given set of reflexive operator algebras \(\{\mathcal T_ i\}^ n_{i=1}\) (1\(\leq n\leq \infty\)) in Hilbert spaces \(\{H_ i\}^ n_{i=1}\).
openaire   +3 more sources

An extension of the basic local independence model to multiple observed classifications

open access: yesBritish Journal of Mathematical and Statistical Psychology, EarlyView.
Abstract The basic local independence model (BLIM) is appropriate in situations where populations do not differ in the probabilities of the knowledge states and the probabilities of careless errors and lucky guesses of the items. In some situations, this is not the case. This work introduces the multiple observed classification local independence model
Pasquale Anselmi   +8 more
wiley   +1 more source

Morita embeddings for dual operator algebras and dual operator spaces

open access: yes, 2017
We define a relation < for dual operator algebras. We say that B < A if there exists a projection p in A such that B and pAp are Morita equivalent in our sense.
Eleftherakis, G. K.
core   +1 more source

Aggregation and the Structure of Value

open access: yesNoûs, EarlyView.
ABSTRACT Roughly, the view I call “Additivism” sums up value across time and people. Given some standard assumptions, I show that Additivism follows from two principles. The first says that how lives align in time cannot, in itself, matter. The second says, roughly, that a world cannot be better unless it is better within some period or another.
Weng Kin San
wiley   +1 more source

(Co‐)Reference All the Way Down: A Unified Theory of (Pro) Nominals in Ordinary English

open access: yesTheoria, EarlyView.
ABSTRACT This essay joins two themes, both arising from Kripke's inspiring ideas in the theory of reference. The first theme concerns reference in general. The second examines the notion of co‐reference and the role it plays in a unified theory of pronouns for natural language.
Jessica Pepp, Joseph Almog
wiley   +1 more source

Ideals and hereditary subalgebras in operator algebras

open access: yes, 2012
This paper may be viewed as having two aims. First, we continue our study of algebras of operators on a Hilbert space which have a contractive approximate identity, this time from a more Banach algebraic point of view.
Almus, Melahat   +2 more
core   +1 more source

The Rise of Human–Computer Integration in Marketing: A Theory Synthesis

open access: yesPsychology &Marketing, Volume 43, Issue 6, Page 1343-1380, June 2026.
ABSTRACT Human–computer integration (HCInt) technologies, which merge human bodily, cognitive, and sensory functions with computational processes, are reshaping the foundations of consumer experience. Unlike traditional human–computer interaction, HCInt entails adaptive and reciprocal coupling through AI‐driven augmentation, wearables, muscle–computer ...
Carlos Velasco   +5 more
wiley   +1 more source

Characterization of derivations on strongly double triangle subspace lattice algebras by local actions

open access: yesOpen Mathematics
Let D $\mathcal{D}$ be a strongly double triangle subspace lattice on a nonzero complex reflexive Banach space and AlgD $\text{Alg}\mathcal{D}$ the associated subspace lattice algebra. Assume that F,G∈AlgD $F,G\in \text{Alg}\mathcal{D}$ and set R(F,G)=
Qin Zijie
doaj   +1 more source

A duality of locally compact groups which does not involve the Haar measure

open access: yes, 2014
We present a simple and intuitive framework for duality of locally compacts groups, which is not based on the Haar measure. This is a map, functorial on a non-degenerate subcategory, on the category of coinvolutive Hopf \cst-algebras, and a similar map ...
Kuznetsova, Yulia
core   +3 more sources

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