In the literature the lifting procedure described above is often coupled with another key result introduced in [76], a nilpotent approximation which is akin to the classical freezing technique for elliptic operators.
Instead we approximated relative risks by the odds ratios obtained from logistic regression models, an approximation which is reasonable for a rare disease such as childhood ALL.
But their most evocative memories are also, by their nature, a kind of approximation, which have an emotional, rather than technical, precision.
I do not have my grandmother's own recipe, although I am sure she seared it into many an illiterate mind in her kitchens, but I have found an approximation, which I feel strangely forced to give.
In this approximation, which is known as the linear combination of atomic orbitals (LCAO) approximation, each MO is constructed from a superposition of atomic orbitals belonging to the atoms in the molecule.
The Born-Oppenheimer approximation, which was introduced by Max Born and J. Robert Oppenheimer in 1927, separates the motion of the electrons in a molecule from the motion of the nuclei.
This is an approximation, which is usually satisfactory.
Computation is carried out using the integrated nested Laplace approximation, which is fast.
Here, we have two assumptions for approximation which are proposed based on the actual facts.
So, the only approximation which we used in the calculations is ISD [9, 12].
