To expand a bracket means to multiply each term in the bracket by the expression outside the bracket. For example, in the expression \(3(m + 7)\), multiply both \(m\) and 7 by 3, so: \(3(m + 7) = 3 ...

In algebra, letters are used to stand for values that can change (variables) or for values that are not known (unknowns). A term is a number or letter on its own, or numbers and letters multiplied ...

If a properly infinite von Neumann algebra on a separable Hilbert space is approximately finite dimensional with respect to the $\ast$-ultrastrong topology, that is, if any finite number of elements ...