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, l
from proveit.numbers import Abs, Exp, Mult, Neg, frac, one, subtract, two
from proveit.physics.quantum.QPE import _delta_b_floor, _t, _two_pow_t
In [2]:
# build up the expression from sub-expressions
sub_expr1 = Neg(one)
sub_expr2 = Exp(two, Neg(_t))
sub_expr3 = Abs(subtract(_delta_b_floor, Mult(l, sub_expr2)))
expr = ExprTuple(Exp(Mult(two, _two_pow_t, sub_expr3), sub_expr1), Mult(frac(one, two), sub_expr2, Exp(sub_expr3, sub_expr1)))
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 \cdot 2^{t} \cdot \left|\delta_{b_{\textit{f}}} - \left(l \cdot 2^{-t}\right)\right|\right)^{-1}, \frac{1}{2} \cdot 2^{-t} \cdot \left|\delta_{b_{\textit{f}}} - \left(l \cdot 2^{-t}\right)\right|^{-1}\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: 34
operands: 3
2Operationoperator: 30
operands: 4
3ExprTuple5, 14
4ExprTuple6, 33, 7
5Operationoperator: 30
operands: 8
6Operationoperator: 9
operands: 10
7Operationoperator: 34
operands: 11
8ExprTuple36, 12, 13
9Literal
10ExprTuple20, 36
11ExprTuple13, 14
12Operationoperator: 34
operands: 15
13Operationoperator: 16
operand: 19
14Operationoperator: 38
operand: 20
15ExprTuple36, 40
16Literal
17ExprTuple19
18ExprTuple20
19Operationoperator: 21
operands: 22
20Literal
21Literal
22ExprTuple23, 24
23Operationoperator: 25
operand: 28
24Operationoperator: 38
operand: 29
25Literal
26ExprTuple28
27ExprTuple29
28Literal
29Operationoperator: 30
operands: 31
30Literal
31ExprTuple32, 33
32Variable
33Operationoperator: 34
operands: 35
34Literal
35ExprTuple36, 37
36Literal
37Operationoperator: 38
operand: 40
38Literal
39ExprTuple40
40Literal