Results 81 to 90 of about 9,500 (263)
Discrete Mathematics, 2002 Let \(f_1\) and \(f_2\) be graphical parameters of positive integers. Let \(m\) and \(n\) be positive integers. Define the Ramsey number \(r(f_1\geq m\); \(f_2\geq n\)) as the least positive integer \(N\) such that for any graph \(G\) of order \(N\) either \(f_1(G)\geq m\) or \(f_2(\overline G)\geq n\).
Wai Chee Shiu +2 more
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, 2018 The Ramsey number \(R_X(p,q)\) for a class of graphs X is the minimum n such that every graph in X with at least n vertices has either a clique of size p or an independent set of size q. We say that Ramsey number is linear in X if there is a constant k such that \(R_{X}(p,q) \le k(p+q)\) for all p, q.
Aistis Atminas +2 more
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Journal of Quaternary Science, EarlyView.ABSTRACT Glaciokarst landscapes pose distinctive challenges for cosmogenic dating because meltwater and runoff can be rapidly rerouted into ponors and conduit networks, weakening glacier–river coupling and promoting local sediment storage. We reconstruct glacier retreat and postglacial stabilization on the Snežnik Plateau (SW Slovenia) using in situ ...
Onur Altınay +6 more
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Star-critical Ramsey numbers for hexagon [PDF]
Annals of computer science and information systems, 2023 Tomasz Dzido
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Journal of Combinatorial Theory, Series A, 1980 AbstractUpper bounds are found for the Ramsey function. We prove R(3, x) < cx2lnx and, for each k ⩾ 3, R(k, x) < ckxk − 1(ln x)k − 2 asymptotically in x.
Miklós Ajtai +2 more
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Journal of Quaternary Science, EarlyView.ABSTRACT Subfossil insect communities from the Quartz Creek site provide a detailed record of both Late Pleistocene steppe–tundra and Holocene boreal forest ecosystems in central Yukon Territory, Canada. Fifteen Pleistocene assemblages (marine isotope stages [MIS] 4 to 2) are dominated by steppe–tundra and dry‐tundra taxa, particularly the weevils ...
Scott L. Cocker +4 more
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Sustainable Development, EarlyView.ABSTRACT Illegal gold mining has emerged as a major sustainability threat in the Amazon, eroding Indigenous rights, forest integrity, and climate mitigation efforts. This study examines how international market incentives relate to the expansion of illegal mining and associated deforestation within the Yanomami Indigenous Territory (YIT) from 2008 to ...
Shirléia Lago Santos +2 more
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Sustainable Development, EarlyView.ABSTRACT Corporate sustainability in the Global South unfolds under heterogeneous institutional conditions, where firms face simultaneous pressures from global ESG standards and local governance constraints. This study examines the relationship between ESG‐aligned environmental practices and corporate financial performance, considering the moderating ...
Paulo Sérgio Reinert +3 more
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On Ramsey and star-critical Ramsey numbers for generalized fans versus <i>nK</i> <sub><i>m</i></sub>. [PDF]
Discrete Appl Math, 2021 Hamm A, Hazelton P, Thompson S.
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Discrete Mathematics, 1997 Fractional Ramsey numbers \(r_f(x,y)\) are defined as the smallest integer \(n\) such that for any red/blue coloring of the edges of the complete graph \(K_n\) either the red subgraph has the fractional clique number \(x\) or the blue subgraph has the fractional clique number \(y\).
Michael S. Jacobson +2 more
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