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It is always guaranteed to find some order in chaos -- we just need to take a large enough chaos. To explain why, we use the tools from the area of mathematics known as Ramsey theory.
Ermakovich, Elizaveta
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, 1997 Letkandlbe positive integers. The Ramsey numberr(k,l)is the least positive integerrsuch that every graphGwithrvertices contains eitherkmutually adjacent vertices orlmutually non-adjacent vertices. A matroid version of the Ramsey number is defined in this
Reid, Talmage James
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Journal of Quaternary Science, EarlyView.Abstract The transition from the Last Glacial Maximum to the Late Glacial marked a shift from the cold conditions of Greenland Stadial‐2 (GS‐2) to the warmer phases of Greenland Interstadial‐1 (GI‐1), enabling the reoccupation of Alpine regions by Late Palaeolithic hunter‐gatherers.
Mahym Amanova +2 more
wiley +1 more source
, 2019 In this paper, we consider a variant of Ramsey numbers which we call complementary Ramsey numbers $\bR(m,t,s)$. We first establish their connections to pairs of Ramsey $(s,t)$-graphs.
Shinohara, M. (Masashi) +1 more
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Ramsey and Gallai-Ramsey numbers for forests
Given two non-empty graphs $G,H$ and a positive integer $k$, the Gallai-Ramsey number $gr_k(G:H)$ is defined as the minimum integer $N$ such that for all $n\geq N$, every $k$-edge-coloring of $K_n$ contains either a rainbow copy of $G$ or a monochromatic
Wei, Meiqin +3 more
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Journal of Quaternary Science, EarlyView.ABSTRACT The northern European distal cryptotephra framework is constantly developing both in terms of identification of new tephra horizons and improved age constraints for the already well‐established tephra marker horizons. However, many prehistoric tephra layers have only been dated by the radiocarbon method, with its inherent problems.
Maarit Kalliokoski +2 more
wiley +1 more source
Journal of Quaternary Science, EarlyView.ABSTRACT Victoria Cave, north Yorkshire, England, contains a long sequence of Pleistocene clastic sediments and calcite flowstones. Earlier work, using U–Th dating, established that the flowstone units formed in interglacial stages corresponding to Marine Isotope Stages (MIS) 13, 11, 9, 7 and 5.
Tom C. Lord +7 more
wiley +1 more source
, 1981 In this paper we continue the work of [3]. That is, we define the star sub-ramsey numbers sr(K1.3, k) for given (positive) integers n and k and obtain some exact values. We also include some general remarks.
Hahn, Geňa
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Disparities in Hearing Screening Practices in Minnesota Elementary Schools
The Laryngoscope, EarlyView.ABSTRACT Objective Identifying and addressing pediatric hearing loss is critical to supporting a child's development. School‐based hearing screening is a mainstay of timely identification of hearing loss. The objectives of this study were to characterize the current hearing screening practices in public, charter, and private elementary schools in ...
Autefeh Sajjadi +12 more
wiley +1 more source
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.
europepmc +1 more source