Invisible obstacles
A. G. Ramm
Annales Polonici Mathematici, Tome 92 (2007), p. 145-148 / Harvested from The Polish Digital Mathematics Library

It is proved that one can choose a control function on an arbitrarilly small open subset of the boundary of an obstacle so that the total radiation from this obstacle for a fixed direction of the incident plane wave and for a fixed wave number will be as small as one wishes. The obstacle is called "invisible" in this case.

Publié le : 2007-01-01
EUDML-ID : urn:eudml:doc:280965
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     year = {2007},
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A. G. Ramm. Invisible obstacles. Annales Polonici Mathematici, Tome 92 (2007) pp. 145-148. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-ap90-2-4/