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Title: Wonderful Example of why Math is Fascinating
Review: I'm not kidding here:this is one of the most fascinating mathematics books I've ever read! With a very conversational, informal writing style, Mr.Erdelyi explains the theory of convolution quotients, an immensely powerful and profound mathematical topic. Basically, in the same way rational numbers are developed from natural numbers by division, generalized functions may be obtained from run-of-the-mill functions by convolution. Amazingly, these bizarre entities can be either functions, impulse functions(like the delta function) and operators! The fact that we can treat operators like algebraic entities turns out to be the key for solving many tough differential equations.This gem of a book is a must-read introduction to this fascinating topic. Beginning with a simple introduction, and using clear prose and a perfect balance between rigor and informality, this awesome book is great for anybody trying to solve difficult ODEs!
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