Closed ideals of finite codimension in regular self-adjoint Banach algebras

A Geometric Spectral Theory for n-tuples

A Geometric Spectral Theory for n-tuples of Self-Adjoint Operators in Finite von Neumann Algebras

✍ Charles A. Akemann; Joel Anderson; Nik Weaver 📂 Article 📅 1999 🏛 Elsevier Science 🌐 English ⚖ 249 KB

Suppose b 1 , ..., b n are self-adjoint elements in a finite von Neumann algebra M with trace { and define a map 9 from M to complex (n+1)-space by the formula 9(x)=({(x), {(b 1 x), ..., {(b n x)). Next let B denote the image of the positive unit ball of M under the map 9. B is called the spectral s