A NOTE ON THE SINGULAR AND EXPONENTIAL SPECTRUM IN BANACH ALGEBRAS |
| |
Abstract: | Abstract Let A be a unitary Banach algebra and let B be a closed subalgebra of A that contains the unit. For an element of B we show in this note how both the singular and exponential spectrum depends on the algebra. |
| |
Keywords: | (Amer Math Soc ) 46H05 46H10 |
|
|