A matrix-free Birkhoff-Chebyshev solver with FFT-based matrix-vector products and a near-perfect preconditioner solves a nonconvex orbit-transfer problem on 1,048,577 grid points with mesh-independent iteration counts.
A Nonsmooth Calc ulus for Solving Some Graph- Theoretic Control Problems,
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A Million-Point Fast Trajectory Optimization Solver
A matrix-free Birkhoff-Chebyshev solver with FFT-based matrix-vector products and a near-perfect preconditioner solves a nonconvex orbit-transfer problem on 1,048,577 grid points with mesh-independent iteration counts.