normed topology
81Neumann series — A Neumann series is a mathematical series of the form where T is an operator. Hence, Tn is a mathematical notation for n consecutive operations of the operator T. This generalizes the geometric series. The series is named after the mathematician… …
82Convex cone — In linear algebra, a convex cone is a subset of a vector space over an ordered field that is closed under linear combinations with positive coefficients. A convex cone (light blue). Inside of it, the light red convex cone consists of all points… …
83Ryll-Nardzewski fixed point theorem — In functional analysis, the Ryll Nardzewski fixed point theorem states that if E is a normed vector space and K is a nonempty convex subset of E which is compact under the weak topology, then every group (or equivalently: every semigroup) of… …
84Banach–Mazur theorem — In mathematics, the Banach–Mazur theorem is a theorem of functional analysis. Very roughly, it states that most well behaved normed spaces are subspaces of the space of continuous paths. It is named after Stefan Banach and Stanisław… …
85Per Enflo — Born 1944 Stockholm, Sweden …
86Robert C. James — Robert Clarke James, häufig zitiert als Robert C. James oder R. C. James, (* 1918 in Bloomington, Indiana) ist ein US amerikanischer Mathematiker, der sich mit Funktionalanalysis beschäftigt. James promovierte 1946 bei Aristotle Demetrius Michal… …
