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Banach spaces, function spaces, real functions, integral transforms, theory of distributions, measure theory.
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How to minimize this sparse quadratic function?
There is a problem when I'm reading a paper.
Equation:
$min_p|p-p^*|^2+\alpha |R(p)|^2 + \beta |D(p)-\delta|^2$,
where $p, p^*, R(p), D(p), \delta$ are all $M\times N$ matrices, and $p^*, R(), D(), …