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The theorem by Frobenius is not stated clearly in the text. Moreover, I presume this needs additional hypotheses: what if one of the matrix does not admit an eigenbasis (see [[Jordan form]])?--Fph 09:51, 3 March 2010 (UTC) <small><span class="autosigned">—Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[User:Fph|Fph]] ([[User talk:Fph|talk]] • [[Special:Contributions/Fph|contribs]]) </span></small><!-- Template:Unsigned --> <!--Autosigned by SineBot-->
:Right, and moreover the statement once corrected becomes a trivial consequence of simultaneous triangularizability. Since apparently nobody is reading this anyway, I'm being bold and will reduce the second paragraph to its bare core.
== Unitarily triangulizable? ==
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