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Expression of type Equals

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.logic import Equals
from proveit.numbers import Add, Exp, Mult, frac, one, subtract, two
from proveit.physics.quantum.QPE import _two_pow__t_minus_one, _two_pow_t
In [2]:
# build up the expression from sub-expressions
expr = Equals(Add(Add(subtract(_two_pow__t_minus_one, two), one), one), Mult(frac(one, Exp(two, one)), _two_pow_t))
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(\left(2^{t - 1} - 2\right) + 1\right) + 1\right) = \left(\frac{1}{2^{1}} \cdot 2^{t}\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: 26
operands: 5
4Operationoperator: 6
operands: 7
5ExprTuple8, 32
6Literal
7ExprTuple9, 10
8Operationoperator: 26
operands: 11
9Operationoperator: 12
operands: 13
10Operationoperator: 21
operands: 14
11ExprTuple15, 32
12Literal
13ExprTuple32, 16
14ExprTuple25, 28
15Operationoperator: 26
operands: 17
16Operationoperator: 21
operands: 18
17ExprTuple19, 20
18ExprTuple25, 32
19Operationoperator: 21
operands: 22
20Operationoperator: 30
operand: 25
21Literal
22ExprTuple25, 24
23ExprTuple25
24Operationoperator: 26
operands: 27
25Literal
26Literal
27ExprTuple28, 29
28Literal
29Operationoperator: 30
operand: 32
30Literal
31ExprTuple32
32Literal