<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Assuming that you don't want to store this dense rank-1 matrix explicitly, one way to go is to define your own MATSHELL which holds your two vectors and can apply the outer product to a vector.<br><br><br></div><div><br>Am 06.06.2016 um 19:49 schrieb Sophie Léger <<a href="mailto:sophie.leger@umoncton.ca">sophie.leger@umoncton.ca</a>>:<br><br></div><blockquote type="cite"><div>
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<p class="MsoNormal">Hello,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-CA">I’m trying to multiply a column vector with a line vector (which would result in a matrix) and am wondering if this is possible with Petsc? I have looked, but have not found anything yet. Would it be possible to let me
know if such a functionality exists and if so guide me in the right direction?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">Thank you very much for your help!<o:p></o:p></span></p>
<p class="MsoNormal">Sophie Leger<o:p></o:p></p>
<p class="MsoNormal">Mathematics professor – Université de Moncton<o:p></o:p></p>
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