6.7 Concluding Remarks

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I have only scratched the surface of this immensely important area of mathematics,

as an inspection of the books mentioned below will indicate. What

can be done with PDEs, including the amazing Joukowsky Transform, is

another story and one I cannot say anything about.

Many people have spent their entire lives inside Complex Function Theory

and felt it worthwhile. I suppose some people have spent their entire lives

hitting balls with sticks and thought that worthwhile. The di_erence is that

the _rst activity tells people how to design aeroplanes and control systems

and build _ltering circuits and a million other things, while hitting balls with

sticks doesn't seem to generate much except sweat and an appetite. And, I

suppose, a large income for people who organise the television rights.

6.7. CONCLUDING REMARKS 175

It's a funny old world, and no mistake.

176 CHAPTER 6. RESIDUES

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