Results 51 to 60 of about 70,380 (264)

New iterative codes for 𝓗-tensors and an application

Open Mathematics, 2016
New iterative codes for identifying 𝓗 -tensor are obtained. As an application, some sufficient conditions of the positive definiteness for an even-order real symmetric tensor, i.e., an even-degree homogeneous polynomial form are given.
Wang Feng, Sun Deshu
doaj   +1 more source

An Algorithm for Computing Minimum-Length Irreducible Testors

IEEE Access, 2020
In pattern recognition, the elimination of unnecessary and/or redundant attributes is known as feature selection. Irreducible testors have been used to perform this task.
Ivan Piza-Davila, Guillermo Sanchez-Diaz, Manuel S. Lazo-Cortes, Ivan Villalon-Turrubiates   +3 more
doaj   +1 more source

Diverse Landscape of Tunable Magnetic, Topological, and Ferroelectric States in 2D Ti3Se3Te2

Advanced Science, EarlyView.
Ti3Se3Te2 emerges as a multifunctional 2D van der Waals platform. The monolayer is a dynamically stable ferromagnetic quantum anomalous Hall insulator. In bilayers, two stacking configurations yield distinct phases: AA‐stacking hosts an altermagnetic quantum spin Hall insulator, while AA′‐stacking exhibits three‐state in‐plane ferroelectricity ...
Jiangtao Yu, Jingbo Bai, Yali Yang, Shifeng Qian, Xiaotian Wang, Zhuhong Liu   +5 more
wiley   +1 more source

Some Remarks on Anchor of Irreducible Characters [PDF]

Advances in Group Theory and Applications
In this paper, we show that the direct product of the anchors of two irreducible characters is the anchor of the tensor product of their irreducible characters. We prove that the anchor of any irreducible character of a p-group G is G itself.
Manal H. Algreagri, Ahmad M. Alghamdi
doaj   +1 more source

On Albert Problem and Irreducible Modules

Mathematics, 2023
Motivated by the relation between Albert’s Problem and irreducible modules within the class of commutative power-associative algebras, in this paper, we show some equivalences to Albert’s Problem.
Elkin Oveimar Quintero Vanegas
doaj   +1 more source

Lattices with Doubly Irreducible Elements

, 1974
An element x in a lattice L is join-reducible (meet-reducible) in L if there exist y, z∈L both distinct from x such that x=y⋁z (x=y⋀z); x is join-irreducible (meet-irreducible) in L if it is not join-reducible (meet-reducible) in L; x is doubly ...
Ivan Rival
core   +1 more source

On join irreducible J-trivial semigroups

, 2022
A pseudovariety of semigroups is join irreducible if, whenever it is contained in the complete join of some pseudovarieties, then it is contained in one of the pseudovarieties.
Lee, Edmond W.  H., Lee, Edmond W. H., Rhodes, John, Steinberg, Benjamin, Benjamin Steinberg, Edmond W.  H. Lee, John Rhodes   +6 more
core   +1 more source

Superatom Distortion Induces Triferroicity and Spin Splitting in Two‐Dimensional Antiferromagnets

Advanced Science, EarlyView.
The incorporation of superatoms into a 2D square lattice induces symmetry breaking, thereby enabling concurrent coupling among magnetism, ferroelectricity, and ferroelasticity. This strategy achieves triferroic behavior—characterized by spin‐split antiferromagnetic ground states—and offers a viable pathway toward energy‐efficient spintronic devices ...
Zhen Gao, Fengxian Ma, Guoping Gao, Weizhen Meng, Ying Liu, Yandong Ma, Yalong Jiao   +6 more
wiley   +1 more source

Esophageal hiatal hernia: A report of two cases

The Journal of Association of Chest Physicians
Hiatal hernia (HH) is a condition in which an intraabdominal organ herniates through the esophageal hiatus of the diaphragm. It is rare in the pediatric population due to congenital defects in the diaphragm.
Shivam Garodia, Rajarshi Basu, Tanushree Kundu, Pankaj Kumar Halder   +3 more
doaj   +1 more source

Calculation Model of Relative Permeability in Tight Sandstone Gas Reservoir with Stress Sensitivity

Geofluids, 2021
During the development of tight gas reservoir, the irreducible water saturation, rock permeability, and relative permeability change with formation pressure, which has a significant impact on well production.
Jin Yan, Rongchen Zheng, Peng Chen, Shuping Wang, Yunqing Shi   +4 more
doaj   +1 more source