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... being understood as a perfect conducting contour of the cross section of the empty waveguide or, in more complicated cases, the sum total of contours. In our example,... ... from the figure, a rectangular isosceles triangle becomes L . Applying the classical Fourier method to this boundary problem, i.e representing the function in question in... ... surrounding contour into segments, which obviously leads to the increase in the number of boundary problems to be solved. It can be avoided by using GFM. If the function in question...