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Expression of type Implies

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, t
from proveit.linear_algebra import ScalarMult, VecSum
from proveit.logic import CartExp, Forall, Implies, InSet
from proveit.numbers import Complex, Exp, Interval, Mult, e, i, one, pi, subtract, two, zero
from proveit.physics.quantum import NumKet
from proveit.physics.quantum.QPE import _phase, two_pow_t
In [2]:
# build up the expression from sub-expressions
sub_expr1 = [k]
sub_expr2 = CartExp(Complex, two_pow_t)
sub_expr3 = ScalarMult(Exp(e, Mult(two, pi, i, _phase, k)), NumKet(k, t))
sub_expr4 = Interval(zero, subtract(two_pow_t, one))
expr = Implies(Forall(instance_param_or_params = sub_expr1, instance_expr = InSet(sub_expr3, sub_expr2), domain = sub_expr4), InSet(VecSum(index_or_indices = sub_expr1, summand = sub_expr3, domain = sub_expr4), sub_expr2)).with_wrapping_at(2)
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())
\begin{array}{c} \begin{array}{l} \left[\forall_{k \in \{0~\ldotp \ldotp~2^{t} - 1\}}~\left(\left(\mathsf{e}^{2 \cdot \pi \cdot \mathsf{i} \cdot \varphi \cdot k} \cdot \lvert k \rangle_{t}\right) \in \mathbb{C}^{2^{t}}\right)\right] \Rightarrow  \\ \left(\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) \in \mathbb{C}^{2^{t}}\right) \end{array} \end{array}
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.()(2)('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: 5
operand: 8
4Operationoperator: 25
operands: 7
5Literal
6ExprTuple8
7ExprTuple9, 18
8Lambdaparameter: 47
body: 10
9Operationoperator: 11
operand: 14
10Conditionalvalue: 13
condition: 20
11Literal
12ExprTuple14
13Operationoperator: 25
operands: 15
14Lambdaparameter: 47
body: 17
15ExprTuple19, 18
16ExprTuple47
17Conditionalvalue: 19
condition: 20
18Operationoperator: 21
operands: 22
19Operationoperator: 23
operands: 24
20Operationoperator: 25
operands: 26
21Literal
22ExprTuple27, 48
23Literal
24ExprTuple28, 29
25Literal
26ExprTuple47, 30
27Literal
28Operationoperator: 50
operands: 31
29Operationoperator: 32
operands: 33
30Operationoperator: 34
operands: 35
31ExprTuple36, 37
32Literal
33ExprTuple47, 55
34Literal
35ExprTuple38, 39
36Literal
37Operationoperator: 40
operands: 41
38Literal
39Operationoperator: 42
operands: 43
40Literal
41ExprTuple54, 44, 45, 46, 47
42Literal
43ExprTuple48, 49
44Literal
45Literal
46Literal
47Variable
48Operationoperator: 50
operands: 51
49Operationoperator: 52
operand: 56
50Literal
51ExprTuple54, 55
52Literal
53ExprTuple56
54Literal
55Variable
56Literal