Elliptic optimal control problems with L1-control cost and applications for the placement of control devices

نویسنده

  • Georg Stadler
چکیده

Theorem 4.3 Let the initialization u0 be sufficiently close to the solution ū of P. Then the iterates uk of Algorithm 1 converge superlinearly to ū in L2(Ω). Moreover, the corresponding states yk converge superlinearly to ȳ in H1 0 (Ω). Proof To apply Theorem 4.1, it remains to show that the generalized derivative (4.7) is invertible and that the norms of the inverse linear mappings are bounded. Define I := I−∪I+, and for S ⊂ Ω and v ∈ L2(Ω) the restriction operator ES : L2(Ω) → L2(S) by ES(v) := v|S. The corresponding adjoint opeator is the extension-by-zero operator E∗ S : L 2(S) → L2(Ω). To show that G(u) has a bounded inverse, we assume for arbitrary w ∈ L2(Ω) that G(u)(v) = w. From the explicit form (4.7), one immediately obtains that EΩ\Iv = EΩ\Iw. Thus, vI := EIv ∈ L2(I) satisfies αEIA −?A−1E? I vI + vI = EIw − αEIAAE Ω\IEΩ\Iw. (∗)

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عنوان ژورنال:
  • Comp. Opt. and Appl.

دوره 44  شماره 

صفحات  -

تاریخ انتشار 2009