Norm Alston

As emphasized by J. calculus primarily deals with the approximation (in a neighborhood of some point) of given mappings of vector spaces by linear mappings. The approximating linear map has to be a "good" approximation in some precise sense: it has to be "tangent" to the given map. A very useful notion of "tangent" can easily be introduced for maps between normed vector spaces; it leads to the notion of mappings and gives, in particular for Banach spaces, a very satisfactory theory (cf. Chap. VIII of [3]).

Johnny Alston aka Nailman, Afro Native flutist, composer, nail & wood sculptor, 2017 New Mexico Music Awards finalist in Native and New Age categories for his song, Windwalker, plays beyond genres. Jazz, Native, and Asian influences converge into an original, upbeat fusion of world rhythms. Johnny is a timeless messenger transcending cultures and borders. He delivers a gift a momentary sanctum of notes, sounds, and emotions that create unique personal experiences to the music. His artistic flow opens listeners' hearts to oneself and the world.