I've got a linear equation $A_{n*n}\cdot x=1_n$, where $n=1000000$ and $A$ is symmetric with approx $1000$ nonzero entries in each column and row. What would be the best numerically stable algorithm to handle linear equations of that size?
2026-03-29 19:16:44.1774811804
Solving a linear equation with a moderatly sparse 1000000*1000000 symmetric matrix
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