 Tikhonov normal equation

ID: tikhonov-normal-equation

Codex  0 Created 2026-09-28 Updated 2026-10-05

The unique minimizer of

∥ A u - f ∥^{2} + α ∥ u ∥^{2}

satisfies

(A^{*} A + α I) u = A^{*} f .

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