Results 131 to 140 of about 997,897 (240)

Extremal problems for ordered (hyper)graphs: applications of Davenport-Schinzel sequences [PDF]

open access: yesarXiv, 2003
We introduce a containment relation of hypergraphs which respects linear orderings of vertices and investigate associated extremal functions. We extend, by means of a more generally applicable theorem, the n.log n upper bound on the ordered graph extremal function of F=({1,3}, {1,5}, {2,3}, {2,4}) due to Z.
arxiv  

Locally common graphs. [PDF]

open access: yesJ Graph Theory, 2023
Csóka E, Hubai T, Lovász L.
europepmc   +1 more source

Universal models for Lorenz maps

open access: yes, 1996
The existence of smooth families of Lorenz maps exhibiting all possible dynamical behavior is established and the structure of the parameter space of these families is ...
de Melo, Welington, Martens, Marco
core   +1 more source

Advancing mathematics by guiding human intuition with AI. [PDF]

open access: yesNature, 2021
Davies A   +13 more
europepmc   +1 more source

Extremal combinatorics in generalized Kneser graphs

open access: yes, 2003
This thesis focuses on the interplay of extremal combinatorics and finite geometry. Combinatorics is concerned with discrete (and usually finite) objects. Extremal combinatorics studies how large or how small a collection of finite objects can be under certain restrictions. Those objects can be sets, graphs, vectors, etc.
openaire   +2 more sources

on certain problems in extremal and additive combinatorics [PDF]

open access: yes, 2016
This thesis consists of five chapters. The first chapter serves as an introduction, presenting the four problems studied in this thesis, and the results obtained. Each subsequent chapter then treats a separate problem. The second chapter is about the existence of partial isomorphisms (i.e.
openaire   +2 more sources

The n-queens completion problem. [PDF]

open access: yesRes Math Sci, 2022
Glock S, Munhá Correia D, Sudakov B.
europepmc   +1 more source

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