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Expression of type ExprTuple

from the theory of proveit.core_expr_types.conditionals

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, a
from proveit.core_expr_types import Q_1_to_m
from proveit.logic import And, Equals, TRUE
In [2]:
# build up the expression from sub-expressions
sub_expr1 = And(Q_1_to_m)
expr = ExprTuple(Lambda([a, Q_1_to_m], Equals(Conditional(a, And(TRUE, sub_expr1)), Conditional(a, sub_expr1)).with_wrapping_at(1)))
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(\left(a, Q_{1}, Q_{2}, \ldots, Q_{m}\right) \mapsto \left(\begin{array}{c} \begin{array}{l} \left\{a \textrm{ if } \top ,  Q_{1} \land  Q_{2} \land  \ldots \land  Q_{m}\right.. \\  = \left\{a \textrm{ if } Q_{1} \land  Q_{2} \land  \ldots \land  Q_{m}\right.. \end{array} \end{array}\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
1Lambdaparameters: 2
body: 3
2ExprTuple9, 15
3Operationoperator: 4
operands: 5
4Literal
5ExprTuple6, 7
6Conditionalvalue: 9
condition: 8
7Conditionalvalue: 9
condition: 12
8Operationoperator: 13
operands: 10
9Variable
10ExprTuple11, 12
11Literal
12Operationoperator: 13
operands: 14
13Literal
14ExprTuple15
15ExprRangelambda_map: 16
start_index: 17
end_index: 18
16Lambdaparameter: 22
body: 19
17Literal
18Variable
19IndexedVarvariable: 20
index: 22
20Variable
21ExprTuple22
22Variable