Maximal ideal spaces of Banach algebras of derivable elements
Maximal ideal spaces of Banach algebras of derivable elements
Let A be a commutative Banach algebra, D a closed derivation defined on a subalgebra Δ of A , and with range in A . The elements of Δ may be called derivable in the obvious sense. For each integer k ≦.l, denote by Δ k the domain of D …