[see also: individual, particular, specific, unique, only
This will be proved by showing that H has but a single orbit on M.
Each row of A has a single ± 1 and the rest of the entries 0.
The two examples, E1 and E2, differ by only a single sequence, e, and they serve to illustrate the delicate nature of Theorem 2.
Can E consist of a single point?
With this definition of a tree, no vertex is singled out as the root.