import proveit
# Prepare this notebook for defining the common expressions of a theory:
%common_expressions_notebook # Keep this at the top following 'import proveit'.
from proveit.numbers import zero, one, IntervalCC
from proveit.statistics.sample_spaces import SampleSpacesClass
%begin common
SampleSpaces = SampleSpacesClass()
prob_domain = IntervalCC(zero, one)
%end common