Questions tagged [sparse-operator]

Problems in which an operator or function can be represented with asymptotically less data than the naive representation. For questions that are specifically related to sparse matrices use [sparse-matrix] tag instead.

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Invert a huge sparse operator;

please help me with this question, I want to invert a huge sparse (non-circulant) this below in a $Ax=y$ equation: $$(\lambda I+ \beta D+ \sigma C)x=y$$ where I is an Identity Matrix,D is a Diagonal ...