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Expression of type ExprTuple

from the theory of proveit.numbers.ordering

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, ExprRange, ExprTuple, IndexedVar, Lambda, Variable, a, b, m
from proveit.core_expr_types import a_1_to_m
from proveit.logic import And, Equals, InSet
from proveit.numbers import Max, Real, one
In [2]:
# build up the expression from sub-expressions
sub_expr1 = Variable("_a", latex_format = r"{_{-}a}")
expr = ExprTuple(Lambda([a_1_to_m, b], Conditional(Equals(Max(a_1_to_m, b), Max(Max(a_1_to_m), b)), And(ExprRange(sub_expr1, InSet(IndexedVar(a, sub_expr1), Real), one, m), InSet(b, Real)))))
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_{1}, a_{2}, \ldots, a_{m}, b\right) \mapsto \left\{{\rm Max}\left(a_{1}, a_{2}, \ldots, a_{m}, b\right) = {\rm Max}\left({\rm Max}\left(a_{1}, a_{2}, \ldots, a_{m}\right), b\right) \textrm{ if } \left(a_{1} \in \mathbb{R}\right) ,  \left(a_{2} \in \mathbb{R}\right) ,  \ldots ,  \left(a_{m} \in \mathbb{R}\right) ,  b \in \mathbb{R}\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: 13
body: 2
2Conditionalvalue: 3
condition: 4
3Operationoperator: 5
operands: 6
4Operationoperator: 7
operands: 8
5Literal
6ExprTuple9, 10
7Literal
8ExprTuple11, 12
9Operationoperator: 20
operands: 13
10Operationoperator: 20
operands: 14
11ExprRangelambda_map: 15
start_index: 27
end_index: 28
12Operationoperator: 22
operands: 16
13ExprTuple24, 19
14ExprTuple17, 19
15Lambdaparameter: 32
body: 18
16ExprTuple19, 25
17Operationoperator: 20
operands: 21
18Operationoperator: 22
operands: 23
19Variable
20Literal
21ExprTuple24
22Literal
23ExprTuple29, 25
24ExprRangelambda_map: 26
start_index: 27
end_index: 28
25Literal
26Lambdaparameter: 32
body: 29
27Literal
28Variable
29IndexedVarvariable: 30
index: 32
30Variable
31ExprTuple32
32Variable