




CryptanalysisThorough, systematic introduction to serious cryptography, especially strong in modern forms of cipher solution used by experts. Nihilist, grille, U. S. Army, keyphrase, multiplealphabet, Gronsfeld, Porta, Beaufort, periodic ciphers, and more. Simple and advanced methods. 166 specimens to solve — with solutions....     

Complex Variables and the Laplace Transform for Engineers
Widely acclaimed text on essential engineering mathematics. Theory of complex variables, CauchyRiemann equations, conformal mapping, multivalued functions, etc. Also Fourier and Laplace Transform theory, its applications to engineering, including integrals, linear integrodifferential equations, Z Transform, much more. Many excellent...   The Early Mathematical Manuscripts of Leibniz (Dover Books on Mathematics)This text features Leibniz's own accounts of his work and comprises critical and historical notes and essays. An informative Introduction leads to the "postscript" to Leibniz's 1703 letter to James Bernoulli, his "Historia et Origio Calculi Differentialis," and manuscripts of the period 167377. Essays by C. I....   Mathematics for the Physical Sciences
Advanced undergraduates and graduate students in the natural sciences receive a solid foundation in several fields of mathematics with this text. Topics include vector spaces and matrices; orthogonal functions; polynomial equations; asymptotic expansions; ordinary differential equations; conformal mapping; and extremum problems.... 

Recreations in the Theory of NumbersWHILE the author was a student, an enthusiastic mathematics professor recommended to the class a book entitled Mathematical Recreations and Essays, by W. W. R. Ball. The students dutifully made a note of the title and most of them no doubt promptly forgot about it. Many years later when the book was mentioned to several of the author's own classes,...   Mathematical PuzzlingMany of those who read this book will be interested in the puzzles and investigations for their own sake. Everyone will, I trust, find some things that are new  perhaps even refreshing, And I hope that those who teach mathematics win find the collection especially useful. The problems will challenge and stimulate able youngsters in a way which...   Introduction to the Geometry of Complex Numbers
The present work briefly develops the lectures which we have given since 1930 to the engineering candidates who chose the section of electromechanics at the Faculte polytechnique de Mons.
A memoir by Steinmetz 1 emphasized the simplifying role that can be played by the geometric interpretation of complex numbers in the... 


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