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Expression of type Forall

from the theory of proveit.logic.booleans.conjunction

In [1]:
import proveit
# Automation is not needed when building an expression:
proveit.defaults.automation = False # This will speed things up.
proveit.defaults.inline_pngs = False # Makes files smaller.
%load_expr # Load the stored expression as 'stored_expr'
# import Expression classes needed to build the expression
from proveit import C
from proveit.core_expr_types import A_1_to_l, B_1_to_m, D_1_to_n
from proveit.logic import And, Boolean, Equals, Forall
In [2]:
# build up the expression from sub-expressions
expr = Forall(instance_param_or_params = [A_1_to_l, B_1_to_m, C, D_1_to_n], instance_expr = Equals(And(A_1_to_l, B_1_to_m, C, D_1_to_n), And(A_1_to_l, C, B_1_to_m, D_1_to_n)).with_wrapping_at(2), domain = Boolean)
expr:
In [3]:
# check that the built expression is the same as the stored expression
assert expr == stored_expr
assert expr._style_id == stored_expr._style_id
print("Passed sanity check: expr matches stored_expr")
Passed sanity check: expr matches stored_expr
In [4]:
# Show the LaTeX representation of the expression for convenience if you need it.
print(stored_expr.latex())
\forall_{A_{1}, A_{2}, \ldots, A_{l}, B_{1}, B_{2}, \ldots, B_{m}, C, D_{1}, D_{2}, \ldots, D_{n} \in \mathbb{B}}~\left(\begin{array}{c} \begin{array}{l} \left(A_{1} \land  A_{2} \land  \ldots \land  A_{l}\land B_{1} \land  B_{2} \land  \ldots \land  B_{m} \land C\land D_{1} \land  D_{2} \land  \ldots \land  D_{n}\right) =  \\ \left(A_{1} \land  A_{2} \land  \ldots \land  A_{l} \land C\land B_{1} \land  B_{2} \land  \ldots \land  B_{m}\land D_{1} \land  D_{2} \land  \ldots \land  D_{n}\right) \end{array} \end{array}\right)
In [5]:
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 [6]:
# display the expression information
stored_expr.expr_info()
 core typesub-expressionsexpression
0Operationoperator: 1
operand: 3
1Literal
2ExprTuple3
3Lambdaparameters: 16
body: 4
4Conditionalvalue: 5
condition: 6
5Operationoperator: 7
operands: 8
6Operationoperator: 17
operands: 9
7Literal
8ExprTuple10, 11
9ExprTuple12, 13, 14, 15
10Operationoperator: 17
operands: 16
11Operationoperator: 17
operands: 18
12ExprRangelambda_map: 19
start_index: 35
end_index: 31
13ExprRangelambda_map: 20
start_index: 35
end_index: 33
14Operationoperator: 39
operands: 21
15ExprRangelambda_map: 22
start_index: 35
end_index: 36
16ExprTuple23, 24, 28, 25
17Literal
18ExprTuple23, 28, 24, 25
19Lambdaparameter: 49
body: 26
20Lambdaparameter: 49
body: 27
21ExprTuple28, 44
22Lambdaparameter: 49
body: 29
23ExprRangelambda_map: 30
start_index: 35
end_index: 31
24ExprRangelambda_map: 32
start_index: 35
end_index: 33
25ExprRangelambda_map: 34
start_index: 35
end_index: 36
26Operationoperator: 39
operands: 37
27Operationoperator: 39
operands: 38
28Variable
29Operationoperator: 39
operands: 40
30Lambdaparameter: 49
body: 41
31Variable
32Lambdaparameter: 49
body: 42
33Variable
34Lambdaparameter: 49
body: 43
35Literal
36Variable
37ExprTuple41, 44
38ExprTuple42, 44
39Literal
40ExprTuple43, 44
41IndexedVarvariable: 45
index: 49
42IndexedVarvariable: 46
index: 49
43IndexedVarvariable: 47
index: 49
44Literal
45Variable
46Variable
47Variable
48ExprTuple49
49Variable