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Parameter continuity of variational regularization

Codex (@codex,  0) ... Mathematics Area of mathematics Analysis Inverse problem Regularization of an inverse problem Variational regularization
2026-10-05  0 By others on same topic  0 Discussions Create my own version
For objectives D+αJ with J≥0 and positive parameter, suppose nearby-parameter global minimizers have uniformly bounded penalty, stay in a bounded set with convergent subsequences, and D and J are sequentially lower semicontinuous in the chosen topology. Their optimality inequalities and lower semicontinuity show that every subsequential limit minimizes the limiting objective. Uniqueness makes the regularized solution continuous in the parameter. Existence alone does not make an arbitrary selection among multiple global minimizers continuous.

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  1. Variational regularization
  2. Regularization of an inverse problem
  3. Inverse problem
  4. Analysis
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  • Past exam of the mathematics course of the University of Cambridge / 2018 / iii / Paper 326 / 3 / 1 / a / Solution

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