Tetrad introduces Dracul von Ryan and his Koven of Khaos in a tale of ancient archetypes and modern mayhem. Chris Kyriakou returns from Greece with more than he bargained for--and it's not something Customs will ever find...

This book presents a novel mathematical formalism, based on the tetrad formulation of differential geometry, for describing cosmological observables exactly and conveniently. It covers all the standard observables, i.e. distances, weak lensing, number counts and cosmic microwave background, and also includes a detailed derivation of general-relativistic matrix kinetic theory. All the fully nonlinear equations are derived in detail and the mathematical content is self-contained, so that readers require only a basic knowledge of general relativity. Moreover, the authors discuss several subtle issues that are usually overlooked in the literature and, in particular, issues that distinguish this formalism from the more approximative standard practice.

Marshall McLuhan was the visionary theorist best known for coining the phrase “the medium is the message.” His work prefigures and underlies the themes of writers and artists as disparate and essential as Andy Warhol, Nam June Paik, Neil Postman, Seth Godin, Barbara Kruger, and Douglas Rushkoff, among countless others. Shortly before his death, together with his media scholar son Eric, McLuhan worked on a new literary/visual code–almost a cross between hieroglyphics and poetry–that he called “the tetrads.” This was the ultimate theoretical framework for analyzing any new medium, a koan-like poetics that transcends traditional means of discourse. Some of the tetrads were published, but only a few. Now Eric McLuhan has recovered all the “lost” tetrads that he and his father developed, and accompanies them here with accessible explanations of how they function.

An updated & slightly abridged English translation of the author's previous work on the 5th century B.C. Neoplatonist Hierocles, published in various places. This work allows Hierocles' median position in the history of Neoplatonic philosophy, between Iamblichus & Syrianus-Proclus, to emerge. Contents: (I) Biographical Elements; (II) Hierocles' Ideas on the History of Platonic Philosophy; (III) Hierocles' Philosophical Ideas on Matter, the Demiurge, & the Soul; & (IV) Hierocles' Philosophical Ideas on Providence. Translated from the French.

Genetics accepts contributions that present the results of original research in genetics and related scientific disciplines.

Vol. 26-39 have appendix: 1[st]-14th annual report on the Scholastic Apptitude Test, 1926-39.