Results 211 to 220 of about 42,222 (303)

Chromatic Ramsey Numbers and Two‐Color Turán Densities

Journal of Graph Theory, EarlyView.
ABSTRACT Given a graph G, its 2‐color Turán number ex ( 2 ) ( n , G ) is the maximum number of edges in an n‐vertex graph, such that the edges can be colored with two colors avoiding a monochromatic copy of G. Let π ( 2 ) ( G ) = lim n → ∞ ex ( 2 ) ( n , G ) / n 2 be the 2‐color Turán density of G.
Maria Axenovich, Simon Gaa, Dingyuan Liu
wiley   +1 more source

On the boundary Carrollian conformal algebra. [PDF]

Lett Math Phys
Buzaglo L, He X, Pham TA, Tan H, Vishwa GS, Zhao K.   +5 more
europepmc   +1 more source

On Odd Covers of Cliques and Disjoint Unions

Journal of Graph Theory, EarlyView.
ABSTRACT Babai and Frankl posed the “odd cover problem” of finding the minimum cardinality of a collection of complete bipartite graphs such that every edge of the complete graph of order n $n$ is covered an odd number of times. In a previous paper with O'Neill, some of the authors proved that this value is always ⌈ n / 2 ⌉ $\lceil n/2\rceil $ or ⌈ n /
Calum Buchanan, Alexander Clifton, Eric Culver, Péter Frankl, Jiaxi Nie, Kenta Ozeki, Puck Rombach, Mei Yin   +7 more
wiley   +1 more source

Condition-Specific LC Retention Time Prediction: Feature-Selected QSRR Versus Pretrained Graph Isomorphism Network Transfer Learning. [PDF]

Int J Mol Sci
Szucs R, Sýkorová E, Boháčová I, Neri I, Morgan LM, Moriarty M, Hanna-Brown M.   +6 more
europepmc   +1 more source

Line Graphs of Multigraphs and the Forbidden Graph E 6

Journal of Graph Theory, EarlyView.
ABSTRACT The line graph Γ of a multigraph Δ is the graph whose vertices are the edges of Δ, where two such edges are adjacent if and only if they meet in a single vertex of Δ. We provide several characterizations of such line graphs and in particular show that a graph is a line graph if and only if it does not contain one of the 32 graphs, all of which
Hans Cuypers
wiley   +1 more source

Some Properties of the A ∞ -Nerve. [PDF]

Milan J Math
Ornaghi M.
europepmc   +1 more source

The Impact of New Agricultural Operating Entities on Farmers' Adoption of Green Production Practices: Evidence From China

Land Degradation &Development, EarlyView.
ABSTRACT New agricultural operating entities (NAOEs) are the organizational core of modern agricultural systems, yet whether and how they draw smallholders into green production remains empirically unsettled. Using survey data from 803 vegetable growers in Shandong Province, China, and combining the coefficient of variation method, propensity score ...
Xiaoying Zhao, Qingzhi Liu, Zeyuan Li
wiley   +1 more source

Navigating bibliometric indicators in university rankings: a conceptual framework for strategic research management. [PDF]

Front Res Metr Anal
Alkattan W, Terkawi A, Bakir M, Mufti MA, Hamweyah K.   +4 more
europepmc   +1 more source

Quantization of Polaritons Confined in Dielectric Structures

Laser &Photonics Reviews, EarlyView.
This study addresses the limitations of the Hopfield model of strong light‐matter coupling in the case of structured dieletrics. A method to derive quantum models in the polariton basis using Bogoliubov transformation and third quantization is introduced, demonstrating how to boost interaction strength and engineer nonlocal interactions for strongly ...
Amir Rahmani, Dogyun Ko, Maciej Dems, Andrzej Opala, Michał Matuszewski   +4 more
wiley   +1 more source

Non-isomorphic abelian varieties with the same arithmetic. [PDF]

R Soc Open Sci
Bell J.
europepmc   +1 more source