on nest modules of matrices over division rings

Authors

b. r. yahaghi

m. rahimi-alangi

abstract

let $ m , n in mathbb{n}$, $d$ be a division ring, and $m_{m times n}(d)$ denote the bimodule of all $m times n$ matrices with entries from $d$. first, we characterize one-sided submodules of $m_{m times n}(d)$ in terms of left row reduced echelon or right column reduced echelon matrices with entries from $d$. next, we introduce the notion of a nest module of matrices with entries from $d$. we then characterize submodules of nest modules of matrices over $d$ in terms of certain finite sequences of left row reduced echelon or right column reduced echelon matrices with entries from $d$. we use this result to characterize principal submodules of nest modules. we also describe subbimodules of nest modules of matrices. as a consequence, we characterize (one-sided) ideals of nest algebras of matrices over division rings.

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Journal title:
bulletin of the iranian mathematical society

Publisher: iranian mathematical society (ims)

ISSN 1017-060X

volume 41

issue Issue 7 (Special Issue) 2015

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