logo

Expression of type Forall

from the theory of proveit.logic.booleans.disjunction

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 B, m, n
from proveit.core_expr_types import A_1_to_m, C_1_to_n
from proveit.logic import Boolean, Forall, InSet, Or
from proveit.numbers import Natural
In [2]:
# build up the expression from sub-expressions
expr = Forall(instance_param_or_params = [m, n], instance_expr = Forall(instance_param_or_params = [A_1_to_m, B, C_1_to_n], instance_expr = InSet(B, Boolean), condition = InSet(Or(A_1_to_m, B, C_1_to_n), Boolean)), domain = Natural)
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_{m, n \in \mathbb{N}}~\left[\forall_{A_{1}, A_{2}, \ldots, A_{m}, B, C_{1}, C_{2}, \ldots, C_{n}~|~\left(A_{1} \lor  A_{2} \lor  \ldots \lor  A_{m} \lor B\lor C_{1} \lor  C_{2} \lor  \ldots \lor  C_{n}\right) \in \mathbb{B}}~\left(B \in \mathbb{B}\right)\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: 7
operand: 2
1ExprTuple2
2Lambdaparameters: 3
body: 4
3ExprTuple31, 34
4Conditionalvalue: 5
condition: 6
5Operationoperator: 7
operand: 11
6Operationoperator: 9
operands: 10
7Literal
8ExprTuple11
9Literal
10ExprTuple12, 13
11Lambdaparameters: 26
body: 14
12Operationoperator: 21
operands: 15
13Operationoperator: 21
operands: 16
14Conditionalvalue: 17
condition: 18
15ExprTuple31, 19
16ExprTuple34, 19
17Operationoperator: 21
operands: 20
18Operationoperator: 21
operands: 22
19Literal
20ExprTuple28, 24
21Literal
22ExprTuple23, 24
23Operationoperator: 25
operands: 26
24Literal
25Literal
26ExprTuple27, 28, 29
27ExprRangelambda_map: 30
start_index: 33
end_index: 31
28Variable
29ExprRangelambda_map: 32
start_index: 33
end_index: 34
30Lambdaparameter: 40
body: 35
31Variable
32Lambdaparameter: 40
body: 36
33Literal
34Variable
35IndexedVarvariable: 37
index: 40
36IndexedVarvariable: 38
index: 40
37Variable
38Variable
39ExprTuple40
40Variable