Results 81 to 90 of about 3,136 (233)

On the Covariance of Moore-Penrose Inverses in Rings with Involution

open access: yesAbstract and Applied Analysis, 2014
We consider the so-called covariance set of Moore-Penrose inverses in rings with an involution. We deduce some new results concerning covariance set. We will show that if a is a regular element in a C∗-algebra, then the covariance set of a is closed in ...
Hesam Mahzoon
doaj   +1 more source

Quantitative Metrics for Edge Bundling of Network Visualizations

open access: yesComputer Graphics Forum, EarlyView.
Abstract Edge bundling is widely used for reducing visual clutter in large 2D network and trajectory visualizations. Various edge bundling methods have been proposed, each producing qualitatively distinct outputs for the same data; however, few quantitative metrics exist for systematic evaluation. In this paper, we propose a set of quantitative metrics
M. Wallinger   +3 more
wiley   +1 more source

Topology on CL-algebras

open access: yesSoft Computing
In this paper, by considering the notion of L-algebras and CL-algebras, we construct a topology on a bounded CL-algebra. Then, we investigate some of its topological properties, such as Hausdorff space, T0-space and T1-space and connectedness. Moreover, we express the relation between closed and compact sets in this topology.
H. Khajeh Nasir   +2 more
openaire   +1 more source

𝐶*-algebras and differential topology [PDF]

open access: yesBulletin of the American Mathematical Society, 1985
Let M be a smooth closed manifold. The isotopy classes of smooth structures on M can be made into a finite abelian group \(\Sigma(M).\) The author constructs the homomorphism \(\vartheta(\Sigma(M)\to K^ 0(M))\) into the multiplicative group of units. The main results: there is a manifold M with a second structure \(\alpha \in \Sigma (M)_{(2)}\), for ...
openaire   +3 more sources

Class Angular Distortion Index for Dimensionality Reduction

open access: yesComputer Graphics Forum, EarlyView.
Abstract Dimensionality reduction (DR) techniques are often characterized by whether they preserve global, high‐level structures in the data or local, neighborhood structures. This distinction matters in visualization: global methods can obscure clusters while local methods can over‐emphasize them.
Kaviru Gunaratne   +2 more
wiley   +1 more source

Inverse topology in BL-algebras

open access: yesپژوهش‌های ریاضی, 2020
In this paper, we introduce Inverse topology in a BL-algebra A and prove the set of all minimal prime filters of A, namely Min(A) with the Inverse topology is a compact space, Hausdorff, T0  and T1-Space.
Fereshteh Forouzesh   +2 more
doaj  

Topologies on BP∗-algebras

open access: yesJournal of Mathematical Analysis and Applications, 1989
Among other results, the author shows that on a BP\({}^*\)-algebra [which were introduced and studied by this reviewer and \textit{S. A. Warsi}: Math. Japon, 21, 237-247 (1976; Zbl 0344.46104) and Period. Math. Hungar. 8, 15-28 (1977; Zbl 0329.46056)], there exists a finest locally convex \({}^*\)-algebra topology having the same bounded hermitian ...
openaire   +2 more sources

Scalable Computation of Topological Abstractions for Scalar Data

open access: yesComputer Graphics Forum, EarlyView.
Abstract Topological data analysis has become an important tool for large scale scalar data analysis and visualization, efficiently extracting the inherent structure and features of interest of the data. However, with growing dataset sizes and complexity, it is increasingly becoming infeasible to compute topological abstractions of interest in serial ...
M. Will   +6 more
wiley   +1 more source

TOPOLOGY SPECTRUM OF A KU-ALGEBRA

open access: yesJournal of New Theory, 2015
–The aim of this paper is to study the Zariski topology of a commutative KU-algebra. Firstly, we introduce new concepts of a KU-algebra, such as KU-lattice, involutory ideal and prime ideal and investigate some basic properties of these concepts ...
Samy Mohammed Mostafa   +3 more
doaj  

Stabilizers on \(L\)-algebras

open access: yesBulletin of the Section of Logic
The main goal of this paper is to introduce the notion of stabilizers in \(L\)-algebras and develop stabilizer theory in \(L\)-algebras. In this paper, we introduced the notions of left and right stabilizers and investigated some related properties of ...
Gholam Reza Rezaei, Mona Aaly Kologani
doaj   +1 more source

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