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Expression of type ExprTuple

from the theory of proveit.core_expr_types.lambda_maps

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
from proveit.core_expr_types import Q__b_1_to_i, Q__c_1_to_i, b_1_to_i, c_1_to_i, f__b_1_to_i, g__c_1_to_i
In [2]:
# build up the expression from sub-expressions
expr = ExprTuple(Lambda([b_1_to_i], Conditional(f__b_1_to_i, Q__b_1_to_i)), Lambda([c_1_to_i], Conditional(g__c_1_to_i, Q__c_1_to_i)))
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(b_{1}, b_{2}, \ldots, b_{i}\right) \mapsto \left\{f\left(b_{1}, b_{2}, \ldots, b_{i}\right) \textrm{ if } Q\left(b_{1}, b_{2}, \ldots, b_{i}\right)\right.., \left(c_{1}, c_{2}, \ldots, c_{i}\right) \mapsto \left\{g\left(c_{1}, c_{2}, \ldots, c_{i}\right) \textrm{ if } Q\left(c_{1}, c_{2}, \ldots, c_{i}\right)\right..\right)
In [5]:
stored_expr.style_options()
namedescriptiondefaultcurrent valuerelated methods
wrap_positionsposition(s) at which wrapping is to occur; 'n' is after the nth comma.()()('with_wrapping_at',)
justificationif any wrap positions are set, justify to the 'left', 'center', or 'right'leftleft('with_justification',)
In [6]:
# display the expression information
stored_expr.expr_info()
 core typesub-expressionsexpression
0ExprTuple1, 2
1Lambdaparameters: 10
body: 3
2Lambdaparameters: 13
body: 4
3Conditionalvalue: 5
condition: 6
4Conditionalvalue: 7
condition: 8
5Operationoperator: 9
operands: 10
6Operationoperator: 12
operands: 10
7Operationoperator: 11
operands: 13
8Operationoperator: 12
operands: 13
9Variable
10ExprTuple14
11Variable
12Variable
13ExprTuple15
14ExprRangelambda_map: 16
start_index: 18
end_index: 19
15ExprRangelambda_map: 17
start_index: 18
end_index: 19
16Lambdaparameter: 25
body: 20
17Lambdaparameter: 25
body: 21
18Literal
19Variable
20IndexedVarvariable: 22
index: 25
21IndexedVarvariable: 23
index: 25
22Variable
23Variable
24ExprTuple25
25Variable