Triangular idempotent matrices over a general ring
- Resource Type
- Authors
- Stephen E. Wright
- Source
- Linear and Multilinear Algebra. 70:1717-1731
- Subject
- Oblique projector
Pure mathematics
Ring (mathematics)
Finite ring
Algebra and Number Theory
Idempotence
Structure (category theory)
Characterization (mathematics)
Mathematics
- Language
- ISSN
- 1563-5139
0308-1087
A characterization of idempotency is given for triangular matrices with entries from an arbitrary ring. This yields an elementary approach to constructing such matrices. It also reveals structure a...