It added that the exact sequence of events was not yet clear but that it was following a 'definite line of inquiry'.

We are told, too, that 'the exact sequence of events which turn conditions [for war] into reality are impossible to predict'.

In important cases, the smooth or topological structure set can be computed by means of the surgery exact sequence.

Like any long exact sequence, this sequence breaks up into short exact sequences.

In fact, these calculations can be formulated in a modern language in terms of the surgery exact sequence as indicated here.