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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 ExprRange, Variable, t
from proveit.linear_algebra import Norm, ScalarMult, VecAdd
from proveit.logic import And, Equals, Forall, Implies
from proveit.numbers import Add, Exp, Interval, Mult, Neg, e, frac, i, one, pi, sqrt, two, zero
from proveit.physics.quantum import ket0, ket1
from proveit.physics.quantum.QPE import _phase
In [2]:
# build up the expression from sub-expressions
sub_expr1 = Variable("_a", latex_format = r"{_{-}a}")
sub_expr2 = Add(Neg(t), one)
sub_expr3 = Equals(Norm(ScalarMult(frac(one, sqrt(two)), VecAdd(ket0, ScalarMult(Exp(e, Mult(two, pi, i, Exp(two, Neg(sub_expr1)), _phase)), ket1)))), one)
expr = Implies(Forall(instance_param_or_params = [sub_expr1], instance_expr = sub_expr3, domain = Interval(sub_expr2, zero)), And(ExprRange(sub_expr1, sub_expr3, sub_expr2, zero)))
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[\forall_{{_{-}a} \in \{-t + 1~\ldotp \ldotp~0\}}~\left(\left \|\frac{1}{\sqrt{2}} \cdot \left(\lvert 0 \rangle + \left(\mathsf{e}^{2 \cdot \pi \cdot \mathsf{i} \cdot 2^{-{_{-}a}} \cdot \varphi} \cdot \lvert 1 \rangle\right)\right)\right \| = 1\right)\right] \Rightarrow \left(\left(\left \|\frac{1}{\sqrt{2}} \cdot \left(\lvert 0 \rangle + \left(\mathsf{e}^{2 \cdot \pi \cdot \mathsf{i} \cdot 2^{-\left(-t + 1\right)} \cdot \varphi} \cdot \lvert 1 \rangle\right)\right)\right \| = 1\right) \land  \left(\left \|\frac{1}{\sqrt{2}} \cdot \left(\lvert 0 \rangle + \left(\mathsf{e}^{2 \cdot \pi \cdot \mathsf{i} \cdot 2^{-\left(-t + 2\right)} \cdot \varphi} \cdot \lvert 1 \rangle\right)\right)\right \| = 1\right) \land  \ldots \land  \left(\left \|\frac{1}{\sqrt{2}} \cdot \left(\lvert 0 \rangle + \left(\mathsf{e}^{2 \cdot \pi \cdot \mathsf{i} \cdot 2^{-0} \cdot \varphi} \cdot \lvert 1 \rangle\right)\right)\right \| = 1\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: 5
operand: 9
4Operationoperator: 7
operands: 8
5Literal
6ExprTuple9
7Literal
8ExprTuple10
9Lambdaparameter: 69
body: 11
10ExprRangelambda_map: 12
start_index: 25
end_index: 46
11Conditionalvalue: 14
condition: 13
12Lambdaparameter: 69
body: 14
13Operationoperator: 15
operands: 16
14Operationoperator: 17
operands: 18
15Literal
16ExprTuple69, 19
17Literal
18ExprTuple20, 56
19Operationoperator: 21
operands: 22
20Operationoperator: 23
operand: 26
21Literal
22ExprTuple25, 46
23Literal
24ExprTuple26
25Operationoperator: 27
operands: 28
26Operationoperator: 43
operands: 29
27Literal
28ExprTuple30, 56
29ExprTuple31, 32
30Operationoperator: 67
operand: 37
31Operationoperator: 49
operands: 34
32Operationoperator: 35
operands: 36
33ExprTuple37
34ExprTuple56, 38
35Literal
36ExprTuple39, 40
37Variable
38Operationoperator: 63
operands: 41
39Operationoperator: 52
operand: 46
40Operationoperator: 43
operands: 44
41ExprTuple65, 45
42ExprTuple46
43Literal
44ExprTuple47, 48
45Operationoperator: 49
operands: 50
46Literal
47Operationoperator: 63
operands: 51
48Operationoperator: 52
operand: 56
49Literal
50ExprTuple56, 65
51ExprTuple54, 55
52Literal
53ExprTuple56
54Literal
55Operationoperator: 57
operands: 58
56Literal
57Literal
58ExprTuple65, 59, 60, 61, 62
59Literal
60Literal
61Operationoperator: 63
operands: 64
62Literal
63Literal
64ExprTuple65, 66
65Literal
66Operationoperator: 67
operand: 69
67Literal
68ExprTuple69
69Variable