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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, x
from proveit.core_expr_types import A_1_to_m, B_1_to_n
from proveit.logic import And, Equals
In [2]:
# build up the expression from sub-expressions
expr = ExprTuple(Equals(Conditional(x, And(And(A_1_to_m), And(B_1_to_n))), Conditional(x, And(A_1_to_m, B_1_to_n))).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(\begin{array}{c} \begin{array}{l} \left\{x \textrm{ if } A_{1} \land  A_{2} \land  \ldots \land  A_{m} ,  B_{1} \land  B_{2} \land  \ldots \land  B_{n}\right.. \\  = \left\{x \textrm{ if } A_{1} ,  A_{2} ,  \ldots ,  A_{m}, B_{1} ,  B_{2} ,  \ldots ,  B_{n}\right.. \end{array} \end{array}\right)
In [5]:
stored_expr.style_options()
no style options
In [6]:
# display the expression information
stored_expr.expr_info()
 core typesub-expressionsexpression
0ExprTuple1
1Operationoperator: 2
operands: 3
2Literal
3ExprTuple4, 5
4Conditionalvalue: 7
condition: 6
5Conditionalvalue: 7
condition: 8
6Operationoperator: 14
operands: 9
7Variable
8Operationoperator: 14
operands: 10
9ExprTuple11, 12
10ExprTuple16, 17
11Operationoperator: 14
operands: 13
12Operationoperator: 14
operands: 15
13ExprTuple16
14Literal
15ExprTuple17
16ExprRangelambda_map: 18
start_index: 21
end_index: 19
17ExprRangelambda_map: 20
start_index: 21
end_index: 22
18Lambdaparameter: 28
body: 23
19Variable
20Lambdaparameter: 28
body: 24
21Literal
22Variable
23IndexedVarvariable: 25
index: 28
24IndexedVarvariable: 26
index: 28
25Variable
26Variable
27ExprTuple28
28Variable