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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 k, m
from proveit.logic import Equals
from proveit.numbers import Exp, Mult, Neg, Sum, e, frac, i, one, pi, two
from proveit.physics.quantum.QPE import _m_domain, _phase, _t, _two_pow_t
In [2]:
# build up the expression from sub-expressions
sub_expr1 = [k]
sub_expr2 = frac(one, Exp(two, frac(_t, two)))
sub_expr3 = Mult(Exp(e, Mult(two, pi, i, _phase, k)), Exp(e, Neg(frac(Mult(two, pi, i, k, m), _two_pow_t))))
expr = Equals(Sum(index_or_indices = sub_expr1, summand = Mult(sub_expr2, sub_expr3), domain = _m_domain), Mult(sub_expr2, Sum(index_or_indices = sub_expr1, summand = sub_expr3, domain = _m_domain)))
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(\sum_{k = 0}^{2^{t} - 1} \left(\frac{1}{2^{\frac{t}{2}}} \cdot \left(\mathsf{e}^{2 \cdot \pi \cdot \mathsf{i} \cdot \varphi \cdot k} \cdot \mathsf{e}^{-\frac{2 \cdot \pi \cdot \mathsf{i} \cdot k \cdot m}{2^{t}}}\right)\right)\right) = \left(\frac{1}{2^{\frac{t}{2}}} \cdot \left(\sum_{k = 0}^{2^{t} - 1} \left(\mathsf{e}^{2 \cdot \pi \cdot \mathsf{i} \cdot \varphi \cdot k} \cdot \mathsf{e}^{-\frac{2 \cdot \pi \cdot \mathsf{i} \cdot k \cdot m}{2^{t}}}\right)\right)\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: 10
operand: 7
4Operationoperator: 54
operands: 6
5ExprTuple7
6ExprTuple17, 8
7Lambdaparameter: 60
body: 9
8Operationoperator: 10
operand: 13
9Conditionalvalue: 12
condition: 19
10Literal
11ExprTuple13
12Operationoperator: 54
operands: 14
13Lambdaparameter: 60
body: 16
14ExprTuple17, 18
15ExprTuple60
16Conditionalvalue: 18
condition: 19
17Operationoperator: 47
operands: 20
18Operationoperator: 54
operands: 21
19Operationoperator: 22
operands: 23
20ExprTuple53, 24
21ExprTuple25, 26
22Literal
23ExprTuple60, 27
24Operationoperator: 56
operands: 28
25Operationoperator: 56
operands: 29
26Operationoperator: 56
operands: 30
27Operationoperator: 31
operands: 32
28ExprTuple62, 33
29ExprTuple35, 34
30ExprTuple35, 36
31Literal
32ExprTuple37, 38
33Operationoperator: 47
operands: 39
34Operationoperator: 54
operands: 40
35Literal
36Operationoperator: 49
operand: 45
37Literal
38Operationoperator: 42
operands: 43
39ExprTuple63, 62
40ExprTuple62, 58, 59, 44, 60
41ExprTuple45
42Literal
43ExprTuple52, 46
44Literal
45Operationoperator: 47
operands: 48
46Operationoperator: 49
operand: 53
47Literal
48ExprTuple51, 52
49Literal
50ExprTuple53
51Operationoperator: 54
operands: 55
52Operationoperator: 56
operands: 57
53Literal
54Literal
55ExprTuple62, 58, 59, 60, 61
56Literal
57ExprTuple62, 63
58Literal
59Literal
60Variable
61Variable
62Literal
63Literal