# Thread: Robust Principal Component Analysis and duality

1. ## Robust Principal Component Analysis and duality

Hi every one,

I have the following dual problems (which is attached) but I cannot figure out how can I get the dual from primal (A is a low-rank matrix and E is a sparse matrix). That is really appreciated if anyone can help me. This is the paper I refer to:
Lin, Z., Ganesh, A., Wright, J., Wu, L., Chen, M. and Ma, Y., 2009. Fast convex optimization algorithms for exact recovery of a corrupted low-rank matrix. Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP), 61(6).