On the centres of hereditary JBW-subalgebras of a JBW-algebra
C. Martin Edwards · Mathematical Proceedings of the Cambridge Philosophical Society · 1979
A JB-algebra A is a real Jordan algebra, which is also a Banach space, the norm in which satisfies the conditions that and for all elements a and b in A. It follows from (1.1) and (l.2) that for all elements a and b in A. When the JB-algebra A possesses an identity element then A is said to be a unital JB-algebra and (1.2) is equivalent to the condition that for all elements a and b in A. For the general theory of JB-algebras the reader is referred to (2), (3), (7) and (10).