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i wanna know if a null matrix would be called an upper triangular or lower triangular. <span style="font-size: smaller;" class="autosigned">—Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[Special:Contributions/117.200.51.168|117.200.51.168]] ([[User talk:117.200.51.168|talk]]) 07:29, 17 March 2009 (UTC)</span><!-- Template:UnsignedIP --> <!--Autosigned by SineBot-->
:You’d be better served to ask questions at the [[Wikipedia:Reference desk]], as that is far more watched than individual article pages. In the event, an all zero square matrix is both upper triangular and lower triangular.
:—Nils von Barth ([[User:Nbarth|nbarth]]) ([[User talk:Nbarth|talk]]) 08:26, 2 December 2009 (UTC)
==square matrix==
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