Abstract
A *-family is a set F of signed vectors on a finite set E such that (F*)* = F, where F* is the orthogonal complement of F. In this note we present two characterizations of *-families using relaxations of well-known properties of oriented matroids.
Original language | English |
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Pages (from-to) | 107-110 |
Number of pages | 4 |
Journal | Journal of Combinatorial Theory, Series B |
Volume | 47 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1989 Aug |
Externally published | Yes |
ASJC Scopus subject areas
- Theoretical Computer Science
- Discrete Mathematics and Combinatorics
- Computational Theory and Mathematics