Rene Guenon (1886-1951) is undoubtedly one of the luminaries of the twentieth century, whose critique of the modern world has stood fast against the shifting sands of recent philosophies. His oeuvre of 26 volumes is providential for the modern seeker: pointing ceaselessly to the perennial wisdom found in past cultures ranging from the Shamanistic to the Indian and Chinese, the Hellenic and Judaic, the Christian and Islamic, and including also Alchemy, Hermeticism, and other esoteric currents, at the same time it directs the reader to the deepest level of religious praxis, emphasizing the need...

Many theologians believe that mysticism cannot be set down in a systematic form. The faith of the mystics is thought to be such a fragile thing that it disintegrates if one attempts to explain it in theological terms. This is just not so. It is not what one believes about God, but rather what one does with Him that matters.

Generalized (or pseudo-) inverse concepts routinely appear throughout applied mathematics and engineering, in both research literature and textbooks. Although the basic properties are readily available, some of the more subtle aspects and difficult details of the subject are not well documented or understood. This book is an excellent reference for researchers and students who need or want more than just the most basic elements. First published in 1979, the book remains up-to-date and readable, and it includes chapters on Markov chains and the Drazin inverse methods that have become...

Polynomial continuation is a numerical technique used to compute solutions to systems of polynomial equations. Originally published in 1987, this introduction to polynomial continuation remains a useful starting point for the reader interested in learning how to solve practical problems without advanced mathematics. Solving Polynomial Systems Using Continuation for Engineering and Scientific Problems is easy to understand, requiring only a knowledge of undergraduate-level calculus and simple computer programming. The book is also practical; it includes descriptions of various...

A revised edition of the standard reference on the linear complementarity problem.

A very broad coverage of the most applicable aspects of stochastic processes.

A rigorous guide to scattering theory, with applications to the Helmholtz and Maxwell equations, suitable for mathematicians, scientists and engineers.

An introduction to approximation techniques and variational principles for solving PDEs, suitable for scientists and engineers at graduate level plus.