logo

Expression of type ExprTuple

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 ExprTuple, k, m
from proveit.linear_algebra import ScalarMult, VecSum
from proveit.numbers import Exp, Mult, e, frac, i, one, pi, two
from proveit.physics.quantum import NumBra, NumKet, Qmult
from proveit.physics.quantum.QFT import InverseFourierTransform
from proveit.physics.quantum.QPE import _m_domain, _phase, _t
In [2]:
# build up the expression from sub-expressions
sub_expr1 = NumBra(m, _t)
sub_expr2 = InverseFourierTransform(_t)
sub_expr3 = frac(one, Exp(two, frac(_t, two)))
sub_expr4 = VecSum(index_or_indices = [k], summand = ScalarMult(Exp(e, Mult(two, pi, i, _phase, k)), NumKet(k, _t)), domain = _m_domain)
expr = ExprTuple(Qmult(sub_expr3, sub_expr1, sub_expr2, sub_expr4), Mult(sub_expr3, Qmult(sub_expr1, sub_expr2, sub_expr4)))
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}{2^{\frac{t}{2}}} \thinspace {_{t}}\langle m \rvert \thinspace {\mathrm {FT}}^{\dag}_{t} \thinspace \left(\sum_{k=0}^{2^{t} - 1} \left(\mathsf{e}^{2 \cdot \pi \cdot \mathsf{i} \cdot \varphi \cdot k} \cdot \lvert k \rangle_{t}\right)\right), \frac{1}{2^{\frac{t}{2}}} \cdot \left({_{t}}\langle m \rvert \thinspace {\mathrm {FT}}^{\dag}_{t} \thinspace \left(\sum_{k=0}^{2^{t} - 1} \left(\mathsf{e}^{2 \cdot \pi \cdot \mathsf{i} \cdot \varphi \cdot k} \cdot \lvert k \rangle_{t}\right)\right)\right)\right)
In [5]:
stored_expr.style_options()
namedescriptiondefaultcurrent valuerelated methods
wrap_positionsposition(s) at which wrapping is to occur; 'n' is after the nth comma.()()('with_wrapping_at',)
justificationif any wrap positions are set, justify to the 'left', 'center', or 'right'leftleft('with_justification',)
In [6]:
# display the expression information
stored_expr.expr_info()
 core typesub-expressionsexpression
0ExprTuple1, 2
1Operationoperator: 8
operands: 3
2Operationoperator: 46
operands: 4
3ExprTuple5, 11, 12, 13
4ExprTuple5, 6
5Operationoperator: 24
operands: 7
6Operationoperator: 8
operands: 9
7ExprTuple62, 10
8Literal
9ExprTuple11, 12, 13
10Operationoperator: 56
operands: 14
11Operationoperator: 15
operands: 16
12Operationoperator: 17
operand: 61
13Operationoperator: 19
operand: 23
14ExprTuple60, 21
15Literal
16ExprTuple22, 61
17Literal
18ExprTuple61
19Literal
20ExprTuple23
21Operationoperator: 24
operands: 25
22Variable
23Lambdaparameter: 53
body: 27
24Literal
25ExprTuple61, 60
26ExprTuple53
27Conditionalvalue: 28
condition: 29
28Operationoperator: 30
operands: 31
29Operationoperator: 32
operands: 33
30Literal
31ExprTuple34, 35
32Literal
33ExprTuple53, 36
34Operationoperator: 56
operands: 37
35Operationoperator: 38
operands: 39
36Operationoperator: 40
operands: 41
37ExprTuple42, 43
38Literal
39ExprTuple53, 61
40Literal
41ExprTuple44, 45
42Literal
43Operationoperator: 46
operands: 47
44Literal
45Operationoperator: 48
operands: 49
46Literal
47ExprTuple60, 50, 51, 52, 53
48Literal
49ExprTuple54, 55
50Literal
51Literal
52Literal
53Variable
54Operationoperator: 56
operands: 57
55Operationoperator: 58
operand: 62
56Literal
57ExprTuple60, 61
58Literal
59ExprTuple62
60Literal
61Literal
62Literal