ba space造句

• The dual of  !  " is the ba space.
• See ba space for more details.
• The symbol & Sigma; denotes a & sigma;-algebra of sets, and & Xi; denotes just an algebra of sets ( for spaces only requiring finite additivity, such as the ba space ).
• The ba space of the power set of the natural numbers, " ba " ( 2 "'N "'), is often denoted as simply ba and is isomorphic to the dual space of the  !  " space.