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
from proveit.linear_algebra import ScalarMult, VecAdd, VecSum
from proveit.logic import Equals
from proveit.numbers import Exp, Interval, Mult, e, frac, i, one, pi, sqrt, two, zero
from proveit.physics.quantum import Ket, ket0, ket1
from proveit.physics.quantum.QPE import _phase

# build up the expression from sub-expressions
sub_expr1 = frac(one, sqrt(two))
expr = Equals(ScalarMult(sub_expr1, VecSum(index_or_indices = [k], summand = ScalarMult(Exp(e, Mult(two, pi, i, _phase, k)), Ket(k)), domain = Interval(zero, one))), ScalarMult(sub_expr1, VecAdd(ket0, ScalarMult(Exp(e, Mult(two, pi, i, _phase)), ket1))))

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

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