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, m
from proveit.numbers import ModAbs, Mult, frac, one, subtract
from proveit.physics.quantum.QPE import _phase, _two_pow_t
In [2]:
# build up the expression from sub-expressions
sub_expr1 = ModAbs(subtract(frac(m, _two_pow_t), _phase), one)
expr = ExprTuple(frac(Mult(_two_pow_t, sub_expr1), _two_pow_t), frac(sub_expr1, one))
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{2^{t} \cdot \left|\frac{m}{2^{t}} - \varphi\right|_{\textup{mod}\thinspace 1}}{2^{t}}, \frac{\left|\frac{m}{2^{t}} - \varphi\right|_{\textup{mod}\thinspace 1}}{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: 17
operands: 3
2Operationoperator: 17
operands: 4
3ExprTuple5, 22
4ExprTuple8, 12
5Operationoperator: 6
operands: 7
6Literal
7ExprTuple22, 8
8Operationoperator: 9
operands: 10
9Literal
10ExprTuple11, 12
11Operationoperator: 13
operands: 14
12Literal
13Literal
14ExprTuple15, 16
15Operationoperator: 17
operands: 18
16Operationoperator: 19
operand: 23
17Literal
18ExprTuple21, 22
19Literal
20ExprTuple23
21Variable
22Operationoperator: 24
operands: 25
23Literal
24Literal
25ExprTuple26, 27
26Literal
27Literal