[petsc-users] Functionality in Petsc

[Patrick Sanan]

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.



> Am 06.06.2016 um 19:49 schrieb Sophie Léger <sophie.leger at umoncton.ca>:
> 
> Hello,
>  
> 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?
>  
> Thank you very much for your help!
> Sophie Leger
> Mathematics professor – Université de Moncton
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