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Expression of type Equals

from the theory of proveit.physics.quantum.QPE

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 ExprRange, Variable, e, l
from proveit.core_expr_types import Len
from proveit.logic import Equals
from proveit.numbers import Add, Exp, Interval, Sum, frac, one, subtract, two
from proveit.physics.quantum.QPE import _two_pow__t_minus_one
In [2]:
# build up the expression from sub-expressions
sub_expr1 = Variable("_a", latex_format = r"{_{-}a}")
expr = Equals(Len(operands = [frac(one, Exp(e, two)), Sum(index_or_indices = [l], summand = frac(one, Exp(l, two)), domain = Interval(Add(e, one), subtract(_two_pow__t_minus_one, one)))]), Len(operands = [ExprRange(sub_expr1, sub_expr1, one, two)]))
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(\frac{1}{e^{2}}, \sum_{l = e + 1}^{2^{t - 1} - 1} \frac{1}{l^{2}}\right)| = |\left(1, \ldots, 2\right)|
In [5]:
stored_expr.style_options()
namedescriptiondefaultcurrent valuerelated methods
operation'infix' or 'function' style formattinginfixinfix
wrap_positionsposition(s) at which wrapping is to occur; '2 n - 1' is after the nth operand, '2 n' is after the nth operation.()()('with_wrapping_at', 'with_wrap_before_operator', 'with_wrap_after_operator', 'without_wrapping', 'wrap_positions')
justificationif any wrap positions are set, justify to the 'left', 'center', or 'right'centercenter('with_justification',)
directionDirection of the relation (normal or reversed)normalnormal('with_direction_reversed', 'is_reversed')
In [6]:
# display the expression information
stored_expr.expr_info()
 core typesub-expressionsexpression
0Operationoperator: 1
operands: 2
1Literal
2ExprTuple3, 4
3Operationoperator: 6
operands: 5
4Operationoperator: 6
operands: 7
5ExprTuple8, 9
6Literal
7ExprTuple10
8Operationoperator: 24
operands: 11
9Operationoperator: 12
operand: 16
10ExprRangelambda_map: 14
start_index: 50
end_index: 42
11ExprTuple50, 15
12Literal
13ExprTuple16
14Lambdaparameter: 21
body: 21
15Operationoperator: 40
operands: 18
16Lambdaparameter: 33
body: 20
17ExprTuple21
18ExprTuple38, 42
19ExprTuple33
20Conditionalvalue: 22
condition: 23
21Variable
22Operationoperator: 24
operands: 25
23Operationoperator: 26
operands: 27
24Literal
25ExprTuple50, 28
26Literal
27ExprTuple33, 29
28Operationoperator: 40
operands: 30
29Operationoperator: 31
operands: 32
30ExprTuple33, 42
31Literal
32ExprTuple34, 35
33Variable
34Operationoperator: 44
operands: 36
35Operationoperator: 44
operands: 37
36ExprTuple38, 50
37ExprTuple39, 47
38Variable
39Operationoperator: 40
operands: 41
40Literal
41ExprTuple42, 43
42Literal
43Operationoperator: 44
operands: 45
44Literal
45ExprTuple46, 47
46Literal
47Operationoperator: 48
operand: 50
48Literal
49ExprTuple50
50Literal