We are still in need of a theoretical basis or framework.

Suddenly, the whole theoretical basis of the show looks suspect.

He concluded that the work's theoretical basis did not stand up.

As things stand now, even were we able to detect them, it would be only on a theoretical basis.

It was such a simple problem to solve, at least on a theoretical basis.

"We're really struggling to find a theoretical basis for this."

Models can be useful and have a part to play, if built on a sound theoretical basis.

"And we think that it could increase overall demand, at least on a theoretical basis."

Ross in 1950 carried out an investigation into the theoretical basis for such studies.

Each of the terms in this formula has a theoretical basis, as will be explained below.