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On finite Δ-systems

✍ Scribed by H.L. Abbott; D. Hanson

Publisher
Elsevier Science
Year
1974
Tongue
English
Weight
995 KB
Volume
8
Category
Article
ISSN
0012-365X

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📜 SIMILAR VOLUMES

On finite Δ-systems II
On finite Δ-systems II
✍ H.L. Abbott; D. Hanson 📂 Article 📅 1977 🏛 Elsevier Science 🌐 English ⚖ 609 KB

A J(4) system is a family ~9 of k distinct sets which have pairwise the same intersection A weak 3 (k ) system is a family 9 of k distinct sets such that j b n G i = t for some non-negative integer I and all F. G E 9. Fr' G. In this paper we study some functrons related to these j -systems In partic

Equivalence Relations on Finite Dynamica
Equivalence Relations on Finite Dynamical Systems
✍ Reinhard Laubenbacher; Bodo Pareigis 📂 Article 📅 2001 🏛 Elsevier Science 🌐 English ⚖ 121 KB

This paper is motivated by the theory of sequential dynamical systems, developed as a basis for a theory of computer simulation. We study finite dynamical systems on binary strings, that is, iterates of functions from 0 1 n to itself. We introduce several equivalence relations on systems and study t

On set systems without weak 3-Δ-subsyste
On set systems without weak 3-Δ-subsystems
✍ M. Axenovich; D. Fon-Der-Flaass; A. Kostochka 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 226 KB

A collection of sets is called a weak A-system if sizes of all pairwise intersections of these sets coincide. We prove a new upper bound on the function ./~,.(n), the maximal size of a collection of n-element sets no three of which form a weak A-system. Namely, we prove that, for every 6 > 0. L,(n)