List pairwise cumulative sums of sequence from 0:
abjad> from abjad.tools import mathtools
abjad> mathtools.cumulative_sums_zero_pairwise([1, 2, 3, 4, 5, 6])
[(0, 1), (1, 3), (3, 6), (6, 10), (10, 15), (15, 21)]
Return list of pairs.
Changed in version 2.0: renamed sequencetools.pairwise_cumulative_sums_zero() to mathtools.cumulative_sums_zero_pairwise().