Is it possible to identify/distinguish unital Banach algebras by their invertible elements?
IMAG Functional Analysis Seminar Title: Is it possible to identify/distinguish unital Banach algebras by their invertible elements? By Antonio Peralta (UGR) Abstract: It is natural to ask whether the multiplicative subgroup, $A^{-1},$ of invertible elements in a unital (associative) Banach algebra $A$ determine uniquely the structure of $A$. The answerContinue Reading