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Expression of type ExprTuple

from the theory of proveit.logic.sets.intersection

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 Conditional, ExprTuple, Lambda, m, x
from proveit.core_expr_types import A_1_to_m
from proveit.logic import Forall, InSet, Intersect
from proveit.logic.sets import x_in_every_A
from proveit.numbers import NaturalPos
In [2]:
# build up the expression from sub-expressions
expr = ExprTuple(Lambda(m, Conditional(Forall(instance_param_or_params = [x, A_1_to_m], instance_expr = x_in_every_A, condition = InSet(x, Intersect(A_1_to_m))), InSet(m, NaturalPos))))
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())
\left(m \mapsto \left\{\forall_{x, A_{1}, A_{2}, \ldots, A_{m}~|~x \in \left(A_{1} \cap  A_{2} \cap  \ldots \cap  A_{m}\right)}~\left(\left(x \in A_{1}\right) \land  \left(x \in A_{2}\right) \land  \ldots \land  \left(x \in A_{m}\right)\right) \textrm{ if } m \in \mathbb{N}^+\right..\right)
In [5]:
stored_expr.style_options()
no style options
In [6]:
# display the expression information
stored_expr.expr_info()
 core typesub-expressionsexpression
0ExprTuple1
1Lambdaparameter: 29
body: 3
2ExprTuple29
3Conditionalvalue: 4
condition: 5
4Operationoperator: 6
operand: 9
5Operationoperator: 25
operands: 8
6Literal
7ExprTuple9
8ExprTuple29, 10
9Lambdaparameters: 11
body: 12
10Literal
11ExprTuple30, 24
12Conditionalvalue: 13
condition: 14
13Operationoperator: 15
operands: 16
14Operationoperator: 25
operands: 17
15Literal
16ExprTuple18
17ExprTuple30, 19
18ExprRangelambda_map: 20
start_index: 28
end_index: 29
19Operationoperator: 21
operands: 22
20Lambdaparameter: 34
body: 23
21Literal
22ExprTuple24
23Operationoperator: 25
operands: 26
24ExprRangelambda_map: 27
start_index: 28
end_index: 29
25Literal
26ExprTuple30, 31
27Lambdaparameter: 34
body: 31
28Literal
29Variable
30Variable
31IndexedVarvariable: 32
index: 34
32Variable
33ExprTuple34
34Variable