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*-algebra is easy to learn if you apply yourself.
( z1 easy :ARG1 ( z2 learn :ARG0 ( z3 you ) :ARG1 ( z4 mathematics :mod ( z5 original ) ) ) :condition ( z6 apply :ARG0 z3 :ARG1 z3 ) )