Custom SciML Operators
Low-Rank Jacobian Operators
NonlinearSolveQuasiNewton.BroydenLowRankJacobian — Type
BroydenLowRankJacobian{T}(U, Vᵀ, idx, cache, alpha)Low Rank Approximation of the inverse Jacobian. Currently only used for LimitedMemoryBroyden. This computes the inverse Jacobian as $\alpha I + U \times V^T$, matching the $\alpha I$ seed IdentityInitialization hands the other quasi-Newton methods after inversion.