Results 21 to 30 of about 2,891 (214)
Zero-Divisor Graphs of $2 \times 2$ Upper Triangular Matrix Rings Over $Z_n$ [PDF]
Missouri Journal of Mathematical Sciences, 2014 Istvan Beck introduced the zero-divisor graph in 1988. We explore the directed and undirected zero-divisor graphs of the rings of $2 \times 2$ upper triangular matrices mod $n$, denoted by $\Gamma(T_2(n))$ and $\tilde{\Gamma}(T_2(n))$, respectively. For prime $p$, we completely characterize the graph $\Gamma(T_2(p))$ by partitioning $T_2(p)$, and prove
Fenstermacher, Todd, Gegner, Ethan
openaire +2 more sources
Semicommutative and Armendariz Matrix Rings
AxiomsIn this paper, we construct some interesting high-order upper triangular matrix rings, which have semicommutative and Armendariz properties. Also, the relatively maximality of these rings as subrings of certain matrix rings is considered.
Gang Yang
doaj +1 more source
Derived equivalences of upper-triangular ring spectra via lax limits
Comptes Rendus. MathématiqueWe extend a theorem of Ladkani concerning derived equivalences between upper-triangular matrix rings to ring spectra. Our result also extends an analogous theorem of Maycock for differential graded algebras.
Jasso, Gustavo
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Semi-Armendariz and Semi-McCoy rings
پژوهشهای ریاضی, 2021 We introduce the notion of Semi-Armendariz (resp. Semi-McCoy) rings, which are a subclass of J-Armendariz (resp. J-McCoy rings) and investigate their properties. A ring R is called Semi-Armendariz (Semi-McCoy) if is Armendariz (McCoy).
shervin sahebi
doaj
Influence of Test Temperature and Test Frequency on Fatigue Life of Aluminum Alloy EN AW‐2618A
Advanced Engineering Materials, EarlyView.The influence of test temperature and test frequency on the fatigue life of EN AW‐2618A is investigated. High‐cycle fatigue tests are performed at different test temperatures and frequencies on the 1000 h/230°C overaged state. Both test parameters reduce fatigue life due to time‐dependent damage mechanisms.
Ying Han +5 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.This work shows that the mechanical performance of multimaterial digital light processing (DLP) printed thermoset composites is governed by resin compatibility and interfacial design rather than spatial patterning alone. Brittle and ductile resin combinations produced premature interfacial failure, while graded interfaces and mechanically compatible ...
Ahmed M. H. Ibrahim +3 more
wiley +1 more source
3D Printing Innovations in Polymeric Porous and Patterned Architecture
Advanced Functional Materials, EarlyView.Polymeric foams occupy a unique structural space between dense solids and open networks, where engineered void fraction governs mechanical compliance, thermal resistance, and mass transport. Additive manufacturing now enables precise spatial control over cellular architecture, unlocking designer foam structures across applications spanning crash ...
Dhanush Patil +13 more
wiley +1 more source
A Unified Approach to Generalizing π-Extending and π-Baer Rings
Journal of MathematicsThis paper introduces and examines the right essentially π-Baer ring property, which serves as a new extension of the π-extending and π-Baer ring conditions. The initial phase of the study involves the development of several foundational results.
Yeliz Kara
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Jordan left derivations in full and upper triangular matrix rings
The Electronic Journal of Linear Algebra, 2010 In this paper, left derivations and Jordan left derivations in full and upper triangular matrix rings over unital associative rings are characterized.
Xiao-Wei Xu, Hong-Ying Zhang
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Advanced Functional Materials, EarlyView.An effective strategy is developed to overcome the medium temperatures wear resistance degradation in refractory multi‐principal element alloys. By utilizing chemical short‐range ordering to trigger oxygen‐induced amorphization, a composite oxide structure is formed, which combines high hardness with robust stiffness.
Xuhui Pei +7 more
wiley +1 more source