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Adjacency in subposets of the lattice ofT1-topologies on a set

✍ Scribed by Ofelia T. Alas; Salvador Hernández; Manuel Sanchis; Michael G. Tkachenko; Richard G. Wilson


Publisher
Akadmiai Kiad
Year
2006
Tongue
English
Weight
300 KB
Volume
112
Category
Article
ISSN
1588-2632

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📜 SIMILAR VOLUMES


The set of neighbours of a set in a poin
✍ B. Uhrin 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 454 KB

## Given an n-dimensional point-lattice A c [w" and a bounded set A c KY, the set S(A) of nonzero lattice points ueA such that A n (A + u) # f~ is called the set of neighbours of A in ,4. In the paper a disjoint decomposition of S(A) is showed which gives a representation of the cardinality N(A) o