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The first purpose of this paper is to investigate time-harmonic Maxwell's equations in Lipschitz and multiply connected cavities of R 3. We prove the wellposed-ness of the current source problem by means of a new formulation. Our starting point is the curl second order equation satisfied by the magnetic field. The use of an appropriate compact operator is(More)
In this paper, we proposed an offline English handwriting character recognition system for isolated characters obtained by camera phone. Initially an adaptive thresholding method is used in order to overcome the problems usually encountered in image obtained by camera phone and leads the preservation of meaningful textual information. In a second phase, we(More)
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