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- ...ies seem to be only in pure mathematics, they are often used in many areas of [[theoretical physics]], especially [[string theory]].1 KB (180 words) - 19:12, 19 August 2015
- ...s a representation of that function as a power series which includes terms of negative degree. It may be used to express complex functions in cases where ...in|C_2|</math> once again. But notice: the right hand side is independent of <math>z</math>! So, because we already assumed that <math>r_1<|w-z_0|<r_2</8 KB (1,471 words) - 21:02, 12 April 2022