Results 141 to 150 of about 279,078 (329)
The Lovász–Cherkassky theorem in infinite graphs
Transactions of the London Mathematical SocietyInfinite generalizations of theorems in finite combinatorics were initiated by Erdős due to his famous Erdős–Menger conjecture (now known as the Aharoni–Berger theorem) that extends Menger's theorem to infinite graphs in a structural way.
Attila Joó
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UNIVERSAL INFINITE CLIQUE-OMITTING GRAPHS
Sarajevo Journal of Mathematics, 2016 The main result of the paper is that when κ is a cardinal of cofi- nality ω and λ ≥ κ, the class of graphs of size λ omitting cliques of size κ has no universal element under graph homomorphisms (or the weak and strong embeddings). This theorem only requires ZF.
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Advanced Engineering Materials, EarlyView.Plasma‐assisted hybrid friction stir welding of dissimilar AlCu joints employs localized plasma preheating to balance heat input and enhance plastic flow. The optimized process reduces axial force by up to 35%, refines the microstructure, and achieves ≈96% joint efficiency.
Deepak Kumar Yaduwanshi +3 more
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Infinite-Horizon Optimal Control of Switched Boolean Control Networks With Average Cost: An Efficient Graph-Theoretical Approach [PDF]
, 2020 Shuhua Gao +4 more
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Advanced Engineering Materials, EarlyView.A wood‐based magnetic and conductive material called Magwood (MW), capable of blocking almost 99.99% of electromagnetic waves (in the X‐band frequency range), is synthesized using a simple, solvent‐free process. MW is lightweight, resists water, and is flame‐retardant, making it a promising alternative for shielding electronics. The rapid proliferation
Akash Madhav Gondaliya +3 more
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Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.A high‐performance n‐type element for quasi‐solid‐state thermocells has been introduced, outperforming conventional p‐type elements and showcasing the potential to harness body heat as an energy source or power embedded sensors. This advance significantly contributes to waste thermal energy harvesting and wearable technology, paving the way for self ...
Gilyong Shin +10 more
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The Electronic Journal of Combinatorics, 2017 We characterize the class of infinite graphs $G$ for which there exists a $T$-join for any choice of an infinite $T \subseteq V(G)$. We also show that the following well-known fact remains true in the infinite case. If $G$ is connected and does not contain a $T$-join, then it will if we either remove an arbitrary vertex from $T$ or add any new vertex ...
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Advanced Functional Materials, EarlyView.PBTTT‐OR‐R, a C14‐alkoxy/alkyl‐PBTTT polymer derivative, is of substantial interest for optoelectronics due to its specific fullerene intercalation behavior and enhanced charge‐transfer absorption. Comparing this polymer with (S) and without (O) homocoupling defects reveals that PBTTT‐OR‐R(O) forms stable co‐crystals with PC61BM, while PBTTT‐OR‐R(S ...
Zhen Liu +14 more
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Self‐adjoint and Markovian extensions of infinite quantum graphs
, 2022 Aleksey Kostenko +2 more
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Chemically Processed Porous V2O5 Thin‐Film Cathodes for High‐Performance Thin‐film Zn‐Ion Batteries
Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.This study presents a rapid, cost‐effective chemical method for fabricating porous vanadium oxide thin‐film cathodes, aimed at enhancing charge storage in Zinc‐ion thin‐film batteries. The approach promises high‐performance, safe, and affordable thin‐film batteries, with industrial viability through efficient processing of highly porous cathodes ...
Jingli Luo +9 more
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