Results 31 to 40 of about 6,008,885 (289)

A Complexity Dichotomy in Spatial Reasoning via Ramsey Theory [PDF]

open access: yesACM Transactions on Computation Theory, 2020
Constraint satisfaction problems (CSPs) for first-order reducts of finitely bounded homogeneous structures form a large class of computational problems that might exhibit a complexity dichotomy, P versus NP-complete.
M. Bodirsky, Bertalan Bodor
semanticscholar   +1 more source

Constructions in Ramsey theory [PDF]

open access: yesJournal of the London Mathematical Society, 2018
We provide several constructions for problems in Ramsey theory. First, we prove a superexponential lower bound for the classical 4-uniform Ramsey number $r_4(5,n)$, and the same for the iterated $(k-4)$-fold logarithm of the $k$-uniform version $r_k(k+1,n)$.
Andrew Suk, Dhruv Mubayi
openaire   +4 more sources

DID RAMSEY EVER ENDORSE A REDUNDANCY THEORY OF TRUTH?

open access: yesTópicos, 2013
This paper deals with Ramsey´s theory of truth and its aim is twofold: on the one hand, it will explain what position about truth Ramsey actually defended, and, on the other hand, we will pursue Ramsey’s insight in the XXth century.
María J. Frápolli
doaj   +1 more source

Ramsey–Turán theory

open access: yesDiscrete Mathematics, 2001
AbstractRamsey- and Turán-type problems were always strongly related to each other. Motivated by an observation of Paul Erdős, it was Turán who started the systematic investigation of the applications of extremal graph theory in geometry and analysis.
Simonovits, Miklós, T. Sós, Vera
openaire   +3 more sources

Star-critical connected Ramsey numbers for 2-colorings of complete graphs [PDF]

open access: yesTransactions on Combinatorics
This paper builds upon Sumner's work by further investigating the concept of connected Ramsey numbers, specifically focusing on star-critical connected Ramsey numbers.
Monu Moun, Jagjeet Jakhar, Mark Budden
doaj   +1 more source

Discrepancy of Products of Hypergraphs [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2005
For a hypergraph $\mathcal{H} = (V,\mathcal{E})$, its $d$―fold symmetric product is $\Delta^d \mathcal{H} = (V^d,\{ E^d | E \in \mathcal{E} \})$. We give several upper and lower bounds for the $c$-color discrepancy of such products.
Benjamin Doerr   +2 more
doaj   +1 more source

Amenability and Ramsey theory [PDF]

open access: yesFundamenta Mathematicae, 2013
18 pages. Section 6 was expanded to contain a generalization of the main results to automorphism groups of Fraisse structures.
openaire   +3 more sources

Ramsey’s Theory of Belief

open access: yesEuropean Journal of Pragmatism and American Philosophy, 2022
One of Frank Ramsey’s crucial contributions to philosophy is his theory of belief. Ramsey deals with the notion of full belief in “Facts and Propositions,” as well as that of degrees of belief in “Truth and Probability.” In his posthumously published manuscript OnTruth, Ramsey analyses beliefs and emphasizes the essential role of agent’s actions in his
openaire   +4 more sources

Fraisse Limits, Ramsey Theory, and Topological Dynamics of Automorphism Groups [PDF]

open access: yes, 2004
We study in this paper some connections between the Fraisse theory of amalgamation classes and ultrahomogeneous structures, Ramsey theory, and topological dynamics of automorphism groups of countable structures.Comment: 73 pages, LaTeX 2e, to appear in ...
Kechris, A. S.   +2 more
core   +2 more sources

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