2 Convex Sets and Local / Global Minima

@inproceedings{Duchi20072CS,
  title={2 Convex Sets and Local / Global Minima},
  author={John C. Duchi},
  year={2007}
}
Much of this section was copied and paraphrased from Heath’s Scientific Computing. Anyways. Suppose we are looking for an orthogonal transformation that annihilates desired components of a given vector. Recall that a square real matrix Q is said to be orthogonal if its columns are orthonormal, that is, that Q Q = I. Orthogonal transformations are nice… CONTINUE READING