[Octave-bug-tracker] [bug #46103] inversion of a singular diagonal matrix A produces inv(A)==A

[jan]

Follow-up Comment #15, bug #46103 (project octave):


A sidenote on the questions of sparsity: 

blkdiag() returns sparse if one of the arguments is sparse. I believe diagonal
matrices - at least here - should be considered sparse rather that full? Is
there a general rule on which side diagonal matrix falls? I wonder if
issparse() should return true for diagonal matrix?


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