Proximal gradient method: Difference between revisions

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== Notations and Terminology ==

Let <math>\mathbb{R}^N</math> is, the <math>N</math>-dimensional euclidean space, andbe the ___domain of the function

<math> f: \mathbb{R}^N \rightarrow ]-\infty,+\infty]</math>. Suppose <math>C</math> beis the non-empty

convex subset of <math>\mathbb{R}^N</math>. TheThen, the indicator function of <math>C</math> is defined as

<math> i_C : x \mapsto \left\lbrace