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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
from proveit.logic import Boolean, Equals, FALSE, InSet, Or, TRUE
In [2]:
# build up the expression from sub-expressions
expr = ExprTuple(Lambda(A, Conditional(Or(Equals(A, TRUE), Equals(A, FALSE)), InSet(A, 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())
\left(A \mapsto \left\{\left(A = \top\right) \lor \left(A = \bot\right) \textrm{ if } A \in \mathbb{B}\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: 17
body: 3
2ExprTuple17
3Conditionalvalue: 4
condition: 5
4Operationoperator: 6
operands: 7
5Operationoperator: 8
operands: 9
6Literal
7ExprTuple10, 11
8Literal
9ExprTuple17, 12
10Operationoperator: 14
operands: 13
11Operationoperator: 14
operands: 15
12Literal
13ExprTuple17, 16
14Literal
15ExprTuple17, 18
16Literal
17Variable
18Literal