𝔖 Bobbio Scriptorium
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Singular covers in free lattices

✍ Scribed by Ralph Freese; J. B. Nation; J. Ježek; V. Slavík

Book ID
104759336
Publisher
Springer Netherlands
Year
1986
Tongue
English
Weight
428 KB
Volume
3
Category
Article
ISSN
0167-8094

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✦ Synopsis

A covering a > b in a lattice is called a singular cover if a is join irreducible and b is meet irreducible. A classification of the singular covers which occur in free lattices is given. AMS (MOS) subject classification (1980). 06B25.

📜 SIMILAR VOLUMES

Singular points in pair covers and their
Singular points in pair covers and their relation to Hadamard designs
✍ R.C. Mullin; Dan Wevrick 📂 Article 📅 1991 🏛 Elsevier Science 🌐 English ⚖ 351 KB

A (k, A)-cover of order v is a family of k-subsets of a v-set V which has the property that each pair from V occurs in at least A of the k-subsets. Su-lh a fam.! i y is :3/d to be minimum if no other such family has fewer subsets. A point x of V is said to be singular in a minimum cover if every pai