The functions that could have provided function as a derivative are called antiderivatives (or primitive). The formula that gives all these antiderivatives is called theindefinite integralof the function. And such a process of finding antiderivatives is called integration. ...
whenever the Källen function is positive, so for (normal threshold, on the principal sheet) or for (pseudo-threshold, off the principal sheet). The integral then gives with given in Eq. (A.2). We emphasize that has a pole at with residue and note . We regain from by a subtracted ...
2 . 05 2D Integrals and the Gauss-Green Formula Literacy SheetDavis, BillPorta, HoracioUhl, Jerry