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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 ExprRange, Variable, t
from proveit.logic import Equals
from proveit.numbers import Add, Neg, one, two, zero
from proveit.physics.quantum.QPE import _s
In [2]:
# build up the expression from sub-expressions
sub_expr1 = Variable("_a", latex_format = r"{_{-}a}")
sub_expr2 = Add(t, _s)
sub_expr3 = Add(sub_expr1, Neg(one), t)
sub_expr4 = Add(Neg(t), two)
expr = Equals([zero, ExprRange(sub_expr1, sub_expr3, sub_expr4, one), sub_expr2], [zero, ExprRange(sub_expr1, sub_expr3, sub_expr4, zero), t, sub_expr2]).with_wrapping_at(2)
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())
\begin{array}{c} \begin{array}{l} \left(0,\left(\left(-t + 2\right) - 1 + t\right), \left(\left(-t + 3\right) - 1 + t\right), \ldots, \left(1 - 1 + t\right), t + s\right) =  \\ \left(0,\left(\left(-t + 2\right) - 1 + t\right), \left(\left(-t + 3\right) - 1 + t\right), \ldots, \left(0 - 1 + t\right), t, t + s\right) \end{array} \end{array}
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.()(2)('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
3ExprTuple10, 5, 7
4ExprTuple10, 6, 25, 7
5ExprRangelambda_map: 8
start_index: 9
end_index: 26
6ExprRangelambda_map: 8
start_index: 9
end_index: 10
7Operationoperator: 16
operands: 11
8Lambdaparameter: 20
body: 13
9Operationoperator: 16
operands: 14
10Literal
11ExprTuple25, 15
12ExprTuple20
13Operationoperator: 16
operands: 17
14ExprTuple18, 19
15Literal
16Literal
17ExprTuple20, 21, 25
18Operationoperator: 23
operand: 25
19Literal
20Variable
21Operationoperator: 23
operand: 26
22ExprTuple25
23Literal
24ExprTuple26
25Variable
26Literal