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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 ExprRange, ExprTuple, Variable
from proveit.core_expr_types import Len
from proveit.numbers import Add, Floor, Mult, Neg, frac, one, three, two
from proveit.physics.quantum.QPE import _phase, _two_pow_t
In [2]:
# build up the expression from sub-expressions
sub_expr1 = Variable("_a", latex_format = r"{_{-}a}")
sub_expr2 = frac(one, two)
sub_expr3 = Mult(_two_pow_t, _phase)
expr = ExprTuple(Len(operands = [sub_expr3, sub_expr2, Neg(Floor(Add(sub_expr3, sub_expr2)))]), Len(operands = [ExprRange(sub_expr1, sub_expr1, one, three)]))
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(|\left(2^{t} \cdot \varphi, \frac{1}{2}, -\left\lfloor \left(2^{t} \cdot \varphi\right) + \frac{1}{2}\right\rfloor\right)|, |\left(1, 2, \ldots, 3\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: 4
operands: 3
2Operationoperator: 4
operands: 5
3ExprTuple20, 21, 6
4Literal
5ExprTuple7
6Operationoperator: 8
operand: 12
7ExprRangelambda_map: 10
start_index: 28
end_index: 11
8Literal
9ExprTuple12
10Lambdaparameter: 16
body: 16
11Literal
12Operationoperator: 14
operand: 17
13ExprTuple16
14Literal
15ExprTuple17
16Variable
17Operationoperator: 18
operands: 19
18Literal
19ExprTuple20, 21
20Operationoperator: 22
operands: 23
21Operationoperator: 24
operands: 25
22Literal
23ExprTuple26, 27
24Literal
25ExprTuple28, 31
26Operationoperator: 29
operands: 30
27Literal
28Literal
29Literal
30ExprTuple31, 32
31Literal
32Literal