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In [1]:
import proveit
# Automation is not needed when only building an expression:
proveit.defaults.automation = False # This will speed things up.
proveit.defaults.inline_pngs = False # Makes files smaller.
%load_theorem_expr # Load the stored theorem expression as 'stored_expr'
# import the special expression
from proveit.logic.classes.membership import fold_not_in_class
In [2]:
# check that the built expression is the same as the stored expression
assert fold_not_in_class.expr == stored_expr
assert fold_not_in_class.expr._style_id == stored_expr._style_id
print("Passed sanity check: fold_not_in_class matches stored_expr")
Passed sanity check: fold_not_in_class matches stored_expr
In [3]:
# Show the LaTeX representation of the expression for convenience if you need it.
print(stored_expr.latex())
\forall_{x, C~|~\lnot \left(x \underset{{\scriptscriptstyle c}}{\in} C\right)}~\left(x \notin_{C} C\right)
In [4]:
stored_expr.style_options()
Out[4]:
namedescriptiondefaultcurrent valuerelated methods
with_wrappingIf 'True', wrap the Expression after the parametersNoneNone/False('with_wrapping',)
condition_wrappingWrap 'before' or 'after' the condition (or None).NoneNone/False('with_wrap_after_condition', 'with_wrap_before_condition')
wrap_paramsIf 'True', wraps every two parameters AND wraps the Expression after the parametersNoneNone/False('with_params',)
justificationjustify to the 'left', 'center', or 'right' in the array cellscentercenter('with_justification',)
In [5]:
# display the expression information
stored_expr.expr_info()
Out[5]:
 core typesub-expressionsexpression
0Operationoperator: 1
operand: 3
1Literal
2ExprTuple3
3Lambdaparameters: 12
body: 4
4Conditionalvalue: 5
condition: 6
5Operationoperator: 7
operands: 12
6Operationoperator: 8
operand: 10
7Literal
8Literal
9ExprTuple10
10Operationoperator: 11
operands: 12
11Literal
12ExprTuple13, 14
13Variable
14Variable