On Permutations to Block Triangular Form
- 1 April 1977
- journal article
- Published by Oxford University Press (OUP) in IMA Journal of Applied Mathematics
- Vol. 19 (3) , 339-342
- https://doi.org/10.1093/imamat/19.3.339
Abstract
This note clarifies some points relating to the permutation of a matrix to block triangular form. In particular, the block triangular form of any matrix which may be permuted to have a zero-free diagonal is shown to be unique apart from certain well-defined trivial permutations.Keywords
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