# The Unreasonable Effectiveness of Banach Algebras in Numerical Analysis

Thomas Strohmer

given at  strobl07 (22.06.07 14:45)
id:  636
length:  35min
status:  accepted
type:  talk
An important noncommutative generalization of the famous Wiener's Lemma states that under certain conditions the inverse $A^{-1}$ of a matrix $A$ will inherit the off-diagonal decay properties from $A$.