Proof of
proveit
.
logic
.
classes
.
membership
.
not_in_class_is_bool
theorem
¶
In [1]:
import
proveit
theory
=
proveit
.
Theory
()
# the theorem's theory
In [2]:
%
proving
not_in_class_is_bool
Under these
presumptions
, we begin our proof of
not_in_class_is_bool:
(see
dependencies
)