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Expression of type ExprTuple

from the theory of proveit.logic.booleans

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 A, Conditional, ExprTuple, Lambda, P, PofA
from proveit.logic import And, Boolean, Equals, Forall, PofFalse, PofTrue, TRUE
In [2]:
# build up the expression from sub-expressions
expr = ExprTuple(Lambda(P, Conditional(Equals(Forall(instance_param_or_params = [A], instance_expr = PofA, domain = Boolean), TRUE), And(Equals(PofTrue, TRUE), Equals(PofFalse, TRUE)))))
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(P \mapsto \left\{\left[\forall_{A \in \mathbb{B}}~P\left(A\right)\right] = \top \textrm{ if } P\left(\top\right) = \top ,  P\left(\bot\right) = \top\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: 27
body: 3
2ExprTuple27
3Conditionalvalue: 4
condition: 5
4Operationoperator: 15
operands: 6
5Operationoperator: 7
operands: 8
6ExprTuple9, 25
7Literal
8ExprTuple10, 11
9Operationoperator: 12
operand: 17
10Operationoperator: 15
operands: 14
11Operationoperator: 15
operands: 16
12Literal
13ExprTuple17
14ExprTuple18, 25
15Literal
16ExprTuple19, 25
17Lambdaparameter: 31
body: 20
18Operationoperator: 27
operand: 25
19Operationoperator: 27
operand: 26
20Conditionalvalue: 23
condition: 24
21ExprTuple25
22ExprTuple26
23Operationoperator: 27
operand: 31
24Operationoperator: 29
operands: 30
25Literal
26Literal
27Variable
28ExprTuple31
29Literal
30ExprTuple31, 32
31Variable
32Literal