“…A special case of the f (T, B) theory which has been studied before is that in which f ,TT = 0, f ,TB = 0 , which means that f is a linear function of T, that is, f (T, B) = T + F(B) [36]. In the latter consideration in the case of Friedmann-Lemaître-Robertson-Walker (FLRW) universe, the theory can be written as a scalar field theory, but not a scalar tensor theory, with the same number of dynamical constraints as the f (R)-theory.…”