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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.numbers.number_sets.natural_numbers import fold_forall_natural_pos
In [2]:
# check that the built expression is the same as the stored expression
assert fold_forall_natural_pos.expr == stored_expr
assert fold_forall_natural_pos.expr._style_id == stored_expr._style_id
print("Passed sanity check: fold_forall_natural_pos matches stored_expr")
Passed sanity check: fold_forall_natural_pos matches stored_expr
In [3]:
# Show the LaTeX representation of the expression for convenience if you need it.
print(stored_expr.latex())
\forall_{P}~\left(\left(P\left(1\right) \land \left[\forall_{m \in \mathbb{N}^+~|~P\left(m\right)}~P\left(m + 1\right)\right]\right) \Rightarrow \left[\forall_{n \in \mathbb{N}^+}~P\left(n\right)\right]\right)
In [4]:
stored_expr.style_options()
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()
 core typesub-expressionsexpression
0Operationoperator: 15
operand: 2
1ExprTuple2
2Lambdaparameter: 37
body: 4
3ExprTuple37
4Operationoperator: 5
operands: 6
5Literal
6ExprTuple7, 8
7Operationoperator: 28
operands: 9
8Operationoperator: 15
operand: 13
9ExprTuple11, 12
10ExprTuple13
11Operationoperator: 37
operand: 39
12Operationoperator: 15
operand: 18
13Lambdaparameter: 26
body: 17
14ExprTuple39
15Literal
16ExprTuple18
17Conditionalvalue: 19
condition: 20
18Lambdaparameter: 41
body: 21
19Operationoperator: 37
operand: 26
20Operationoperator: 35
operands: 23
21Conditionalvalue: 24
condition: 25
22ExprTuple26
23ExprTuple26, 40
24Operationoperator: 37
operand: 30
25Operationoperator: 28
operands: 29
26Variable
27ExprTuple30
28Literal
29ExprTuple31, 32
30Operationoperator: 33
operands: 34
31Operationoperator: 35
operands: 36
32Operationoperator: 37
operand: 41
33Literal
34ExprTuple41, 39
35Literal
36ExprTuple41, 40
37Variable
38ExprTuple41
39Literal
40Literal
41Variable