In mathematics, an O*-algebra is an algebra of possibly unbounded operators defined on a dense subspace of a Hilbert space. The original examples were described by and , who studied some examples of O*-algebras, called Borchers algebras, arising from the Wightman axioms of quantum field theory. and began the systematic study of algebras of unbounded operators.
O*-algebras are not all types of Borchers algebras
Borchers algebras are said to be examples of O*-algebras, not the other way around. I think the system had difficulty because I used negative language
( z1 type :polarity - :mod ( z2 all ) :domain ( z3 area :mod ( z4 person :name ( z5 name :op "O*-algebras" ) ) ) :mod ( z6 person :name ( z7 name :op "Boris" :op "algebras" ) ) )