Expression of type Equals

from the theory of proveit.physics.quantum.QPE

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, t
from proveit.linear_algebra import ScalarMult, VecSum
from proveit.logic import Equals
from proveit.numbers import Add, Exp, Interval, Mult, e, frac, i, one, pi, subtract, two, zero
from proveit.physics.quantum import NumKet
from proveit.physics.quantum.QPE import SubIndexed, _phase, _psi, two_pow_t

# build up the expression from sub-expressions
sub_expr1 = Add(t, one)
expr = Equals(ScalarMult(frac(one, Exp(two, frac(sub_expr1, two))), VecSum(index_or_indices = [k], summand = ScalarMult(Exp(e, Mult(two, pi, i, _phase, k)), NumKet(k, sub_expr1)), domain = Interval(zero, subtract(Mult(two, two_pow_t), one)))), SubIndexed(_psi, [sub_expr1]))

expr:

# 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

# Show the LaTeX representation of the expression for convenience if you need it.
print(stored_expr.latex())

\left(\frac{1}{2^{\frac{t + 1}{2}}} \cdot \left(\sum_{k=0}^{\left(2 \cdot 2^{t}\right) - 1} \left(\mathsf{e}^{2 \cdot \pi \cdot \mathsf{i} \cdot \varphi \cdot k} \cdot \lvert k \rangle_{t + 1}\right)\right)\right) = \lvert \psi_{t + 1} \rangle

stored_expr.style_options()

name	description	default	current value	related methods
operation	'infix' or 'function' style formatting	infix	infix
wrap_positions	position(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')
justification	if any wrap positions are set, justify to the 'left', 'center', or 'right'	center	center	('with_justification',)
direction	Direction of the relation (normal or reversed)	normal	normal	('with_direction_reversed', 'is_reversed')

# display the expression information
stored_expr.expr_info()

	core type	sub-expressions	expression
0	Operation	operator: 1 operands: 2
1	Literal
2	ExprTuple	3, 4
3	Operation	operator: 23 operands: 5
4	Operation	operator: 6 operand: 37
5	ExprTuple	8, 9
6	Literal
7	ExprTuple	37
8	Operation	operator: 21 operands: 10
9	Operation	operator: 11 operand: 14
10	ExprTuple	55, 13
11	Literal
12	ExprTuple	14
13	Operation	operator: 56 operands: 15
14	Lambda	parameter: 47 body: 17
15	ExprTuple	58, 18
16	ExprTuple	47
17	Conditional	value: 19 condition: 20
18	Operation	operator: 21 operands: 22
19	Operation	operator: 23 operands: 24
20	Operation	operator: 25 operands: 26
21	Literal
22	ExprTuple	37, 58
23	Literal
24	ExprTuple	27, 28
25	Literal
26	ExprTuple	47, 29
27	Operation	operator: 56 operands: 30
28	Operation	operator: 31 operands: 32
29	Operation	operator: 33 operands: 34
30	ExprTuple	35, 36
31	Literal
32	ExprTuple	47, 37
33	Literal
34	ExprTuple	38, 39
35	Literal
36	Operation	operator: 50 operands: 40
37	Operation	operator: 42 operands: 41
38	Literal
39	Operation	operator: 42 operands: 43
40	ExprTuple	58, 44, 45, 46, 47
41	ExprTuple	59, 55
42	Literal
43	ExprTuple	48, 49
44	Literal
45	Literal
46	Literal
47	Variable
48	Operation	operator: 50 operands: 51
49	Operation	operator: 52 operand: 55
50	Literal
51	ExprTuple	58, 54
52	Literal
53	ExprTuple	55
54	Operation	operator: 56 operands: 57
55	Literal
56	Literal
57	ExprTuple	58, 59
58	Literal
59	Variable