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Expression of type ExprTuple

from the theory of proveit.numbers.exponentiation

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 b_1_to_m
from proveit.logic import And, Equals, InSet, NotEquals
from proveit.numbers import Add, Complex, Exp, Real, one, zero
from proveit.numbers.exponentiation import prod_a_raise_bi__1_to_m
In [2]:
# build up the expression from sub-expressions
sub_expr1 = Variable("_a", latex_format = r"{_{-}a}")
expr = ExprTuple(Lambda([a, b_1_to_m], Conditional(Equals(prod_a_raise_bi__1_to_m, Exp(a, Add(b_1_to_m))), And(InSet(a, Complex), ExprRange(sub_expr1, InSet(IndexedVar(b, sub_expr1), Real), one, m), NotEquals(a, zero)))))
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, b_{1}, b_{2}, \ldots, b_{m}\right) \mapsto \left\{\left(a^{b_{1}} \cdot  a^{b_{2}} \cdot  \ldots \cdot  a^{b_{m}}\right) = a^{b_{1} +  b_{2} +  \ldots +  b_{m}} \textrm{ if } a \in \mathbb{C}, \left(b_{1} \in \mathbb{R}\right) ,  \left(b_{2} \in \mathbb{R}\right) ,  \ldots ,  \left(b_{m} \in \mathbb{R}\right) ,  a \neq 0\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
2ExprTuple40, 33
3Conditionalvalue: 4
condition: 5
4Operationoperator: 6
operands: 7
5Operationoperator: 8
operands: 9
6Literal
7ExprTuple10, 11
8Literal
9ExprTuple12, 13, 14
10Operationoperator: 15
operands: 16
11Operationoperator: 35
operands: 17
12Operationoperator: 30
operands: 18
13ExprRangelambda_map: 19
start_index: 38
end_index: 39
14Operationoperator: 20
operands: 21
15Literal
16ExprTuple22
17ExprTuple40, 23
18ExprTuple40, 24
19Lambdaparameter: 44
body: 25
20Literal
21ExprTuple40, 26
22ExprRangelambda_map: 27
start_index: 38
end_index: 39
23Operationoperator: 28
operands: 29
24Literal
25Operationoperator: 30
operands: 31
26Literal
27Lambdaparameter: 44
body: 32
28Literal
29ExprTuple33
30Literal
31ExprTuple41, 34
32Operationoperator: 35
operands: 36
33ExprRangelambda_map: 37
start_index: 38
end_index: 39
34Literal
35Literal
36ExprTuple40, 41
37Lambdaparameter: 44
body: 41
38Literal
39Variable
40Variable
41IndexedVarvariable: 42
index: 44
42Variable
43ExprTuple44
44Variable