Abstract
Square matrices over a relation algebra are relation algebras in a natural way. We show that for fixed n, these algebras can be characterized as reducts of some richer kind of algebra. Hence for fixed n, the class of n × n matrix relation algebras has a first-order characterization. As a consequence, homomorphic images and proper extensions of matrix relation algebras are isomorphic to matrix relation algebras.
Original language | English |
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Pages (from-to) | 273-299 |
Number of pages | 27 |
Journal | Algebra Universalis |
Volume | 48 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2002 |
Externally published | Yes |
Keywords
- First-order property
- Matrix relation algebra
- Relativization
ASJC Scopus subject areas
- Algebra and Number Theory