Results 51 to 60 of about 55,120 (219)

Some homological aspects of idempotents in idempotented algebras [PDF]

open access: yesCommunications in Algebra, 2020
We study special idempotents (as described by Bushnell and Kutzko) and split idempotents in the context of module and derived categories for idempotented algebras. We then characterize these concepts for path algebras of quivers.
Arnab Mitra, Rishi Vyas
openaire   +2 more sources

Band‐Pass Filtering With High‐Dimensional Time Series. A Synthetic Indicator of the Medium‐to‐Long Run Component of Growth

open access: yesJournal of Time Series Analysis, EarlyView.
ABSTRACT The paper deals with the construction of a synthetic indicator of economic growth, obtained by projecting a quarterly measure of aggregate economic activity, namely gross domestic product (GDP), into the space spanned by a finite number of smooth principal components, representative of the medium‐to‐long‐run component of economic growth of a ...
Alessandro Giovannelli   +2 more
wiley   +1 more source

A GRAPH WHICH RECOGNIZES IDEMPOTENTS OF A COMMUTATIVE RING [PDF]

open access: yesJournal of Algebraic Systems, 2020
In this paper we introduce and study a graph on the set of ideals of a commutative ring $R$. The vertices of this graph are non-trivial ideals of $R$ and two distinct ideals $I$ and $J$ are adjacent if and only $IJ=Icap J$.
H. Dorbidi, S. Alikhani
doaj   +1 more source

Cohomology of idempotent braidings with applications to factorizable monoids [PDF]

open access: yesInternational journal of algebra and computation, 2016
We develop new methods for computing the Hochschild (co)homology of monoids which can be presented as the structure monoids of idempotent set-theoretic solutions to the Yang–Baxter equation. These include free and symmetric monoids; factorizable monoids,
V. Lebed
semanticscholar   +1 more source

Nonnegative Idempotent Matrices [PDF]

open access: yesProceedings of the American Mathematical Society, 1974
Elementary ideas in the theory of partially ordered linear algebras are used to describe the structure of nonnegative idempotent matrices. In particular, we obtain a kind of “spectral decomposition” theorem for such matrices.
openaire   +2 more sources

Can we repudiate ontology altogether?

open access: yesNoûs, EarlyView.
Abstract Ontological nihilists repudiate ontology altogether, maintaining that ontological structure is an unnecessary addition to our theorizing. Recent defenses of the view involve a sophisticated combination of highly expressive but ontologically innocent languages combined with a metaphysics of features—non‐objectual, complete but modifiable states
Christopher J. Masterman
wiley   +1 more source

The Structure of Semiconic Idempotent Commutative Residuated Lattices

open access: yesMathematics
In this paper, we study semiconic idempotent commutative residuated lattices. After giving some properties of such residuated lattices, we obtain a structure theorem for semiconic idempotent commutative residuated lattices. As an application, we make use
Wei Chen
doaj   +1 more source

THE IDEMPOTENT-GENERATED SUBSEMIGROUP OF THE KAUFFMAN MONOID [PDF]

open access: yesGlasgow Mathematical Journal, 2016
We characterise the elements of the (maximum) idempotent-generated subsemigroup of the Kauffman monoid in terms of combinatorial data associated with certain normal forms.
I. Dolinka, J. East
semanticscholar   +1 more source

A Collapse Result in the Mereology of Properties

open access: yesRatio, EarlyView.
ABSTRACT I examine five principles about the metaphysics of properties, each of which has been defended in the literature: (1) the sum of properties is their corresponding conjunctive property, (2) the mereology of properties is classical, (3) properties are individuated by necessary co‐instantiation, (4) sums of objects belonging to different ...
Alejandro G. Di Rienzo
wiley   +1 more source

The Equivalent Standard Forms of a Class of Tropical Matrices and Centralizer Groups

open access: yesMathematics
In this paper, the equivalent standard forms of tropical idempotent strongly definite matrices are introduced. In particular, the observation of the equivalent standard forms of tropical idempotent normal matrices is given.
Yanliang Cheng
doaj   +1 more source

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