Given a set of intervals, this function computes
the corresponding subset of minimal intervals which are defined
as follows. For a given set of intervals \(\mathcal{K}\),
all intervals \(\mathcal{I}_k \in \mathcal{K}\)
such that \(\mathcal{K}\) does not contain a proper subset of
\(\mathcal{I}_k\) are called minimal.
This function is needed for illustrative purposes.
The set of all the intervals where our test rejects the null
hypothesis may be quite large, hence, we would like to focus
our attention on the smaller subset, for which we are still
able to make simultaneous confidence intervals. This subset
is the subset of minimal intervals, and it helps us to
to precisely locate the intervals of further interest.
More details can be found in Duembgen (2002) and
Khismatullina and Vogt (2019, 2020)