Russo-Dye theorem

Let A be a unital C*-algebra. Then the unit ball of A is the closed convex hullMathworldPlanetmath of the unitariesMathworldPlanetmath in A. Moreover, these unitary elementsMathworldPlanetmath are extreme pointsPlanetmathPlanetmath of the unit ball.

Title Russo-Dye theorem
Canonical name RussoDyeTheorem
Date of creation 2013-03-22 16:01:52
Last modified on 2013-03-22 16:01:52
Owner aube (13953)
Last modified by aube (13953)
Numerical id 4
Author aube (13953)
Entry type Theorem
Classification msc 47A60