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...'''. It was first used in mathematics during the development of [[operator theory]] before acquiring a name.<ref name=nosich>{{cite journal | last=Nosich | f which is now a Fredholm equation of the second type because by construction <math> A </math> is [[c ...

* [[History of electromagnetic theory|History]] ...s. The charge-based BEM solves an [[integral equation]] of the [[potential theory]]<ref name=":3">{{cite book |last1=Kress |first1=Rainer |title=Linear Integ ...