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I was reading a general mathematics/ number theory (at least college level) book (NOT a textbook) at Barnes & Noble about a year ago. I can't remember the title but maybe someone on here does...

In this book there was an example of a cat in pursuit of a mouse problem using complex functions in particular the Euler function. The mouse was traveling along a unit circle and the cat was given a velocity slightly greater than that of the mouse and a position somewhere inside the unit circle. Also the cats velocity was always in the direction of the mouse as it moves around the circle. Finally, it determined where the paths of the cat and mouse would intersect.

Also in this book there was an example of a man and his dog running along some path where the dog is always some fixed distance away from the man. As they are running the path may twist and wind in whatever direction. They showed using complex integration and phase calculations how to determine the extra distance traveled by dog.

Does anyone know the title and author of this book? Hope enough information was given.

V

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# Mathematics Text: Need the title!

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