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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 import t
from proveit.logic import Equals
from proveit.numbers import Exp, Mult, Neg, frac, one, sqrt, two
In [2]:
# build up the expression from sub-expressions
sub_expr1 = frac(one, two)
sub_expr2 = Mult(sub_expr1, t)
expr = Equals(Mult(one, Exp(Mult(sqrt(two), Exp(two, sub_expr2)), Neg(one))), Mult(Exp(two, Neg(sub_expr1)), Exp(two, Neg(sub_expr2))))
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(1 \cdot \left(\sqrt{2} \cdot 2^{\frac{1}{2} \cdot t}\right)^{-1}\right) = \left(2^{-\frac{1}{2}} \cdot 2^{-\left(\frac{1}{2} \cdot t\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: 28
operands: 5
4Operationoperator: 28
operands: 6
5ExprTuple34, 7
6ExprTuple8, 9
7Operationoperator: 25
operands: 10
8Operationoperator: 25
operands: 11
9Operationoperator: 25
operands: 12
10ExprTuple13, 14
11ExprTuple35, 15
12ExprTuple35, 16
13Operationoperator: 28
operands: 17
14Operationoperator: 20
operand: 34
15Operationoperator: 20
operand: 30
16Operationoperator: 20
operand: 27
17ExprTuple22, 23
18ExprTuple34
19ExprTuple30
20Literal
21ExprTuple27
22Operationoperator: 25
operands: 24
23Operationoperator: 25
operands: 26
24ExprTuple35, 30
25Literal
26ExprTuple35, 27
27Operationoperator: 28
operands: 29
28Literal
29ExprTuple30, 31
30Operationoperator: 32
operands: 33
31Variable
32Literal
33ExprTuple34, 35
34Literal
35Literal