Offers a well-rounded, mathematical approach to problems in signal interpretation using the latest time, frequency, and mixed-domain methods
* Equally useful as a reference, an up-to-date review, a learning tool, and a resource for signal analysis techniques
* Provides a gradual introduction to the mathematics so that the less mathematically adept reader will not be overwhelmed with instant hard analysis
* Covers Hilbert spaces, complex analysis, distributions, random signals, analog Fourier transforms, and more

Irving Fisher was one of the greatest and certainly one of the most colorful American economists. Widely acknowledged as the chief architect of modern neo-classical economics, he was a writer and teacher of prodigious scope and output whose business career included the earning of a fortune from the invention of a card index system, and its subsequent loss in the Great Crash. He was also an active campaigner for numerous causes, including world peace, prohibition, and 100 percent deposit reserve money.
This biography, focusing both on Fisher's personal life, as well as on his intellectual contributions, will be of wide interest to economists and of particular interest to American economics scholars who regard him as their pre-1950 giant of the discipline.

Students embarking upon a colour chemistry course usually approach it by way of a general introduction and proceed to more detailed treatment of the subject when they have acquired some knowledge of its character and scope. This book has been written with the twofold purpose of serving as a guide to such students during the introductory part of their course and of supplying the needs in this field of others whose main interest is in a related branch of technology or pure chemistry. An attempt has been made to present the main features of the subject in an easily assimilable form. The great amount of published information renders the choice of material for a short book somewhat difficult, and I am keenly conscious of topics that might be thought worthy of more extensive treatment. However, a concise account cannot be comprehensive, and suggestions for further reading are provided at the end of the book. The chemistry of colouring matters can be regarded as a branch of pure chemistry, but the development of knowledge in this field has followed a course determined chiefly by the applications of dyes and pigments. It has therefore appeared appropriate to treat the subject here as a branch of technology.