Overview: For well over a decade, the numerical approach to field computation has been gaining progressively greater importance. Analytical methods offield compu- tation are, at best, unable to accommodate the very wide variety of configura- tions in which fields must be computed. On the other hand, numerical methods can accommodate many practical configurations that analytical methods cannot. With the advent of high-speed digital computers, numerical field computations have finally become practical. However, in order to implement numerical methods of field computation, we need algorithms, num
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