Describes orthgonal and related Lie groups, using real or complex parameters and indefinite metrics. Develops theory of spinors by giving a purely geometric definition of these mathematical entities. Covers generalities on the group of rotations in n-dimensional space, the theory of spinors in spaces of any number of dimensions and much more.
Understanding brain structure and principles of operation is one of the major challenges of modern science. Since the experiments by Galvani on frog muscle contraction in 1792, it is known that electrical impulses lie at the core of the brain activity.
