Expression of type Equals

from the theory of proveit.physics.quantum.QPE

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 l
from proveit.logic import Equals
from proveit.numbers import Abs, Exp, Mult, Neg, frac, subtract, two
from proveit.physics.quantum.QPE import _delta_b_floor, _t, _two_pow_t

# build up the expression from sub-expressions
expr = Equals(Abs(subtract(_delta_b_floor, frac(l, _two_pow_t))), Abs(subtract(_delta_b_floor, Mult(l, Exp(two, Neg(_t))))))

expr:

# 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

# Show the LaTeX representation of the expression for convenience if you need it.
print(stored_expr.latex())

\left|\delta_{b_{\textit{f}}} - \frac{l}{2^{t}}\right| = \left|\delta_{b_{\textit{f}}} - \left(l \cdot 2^{-t}\right)\right|

stored_expr.style_options()

name	description	default	current value	related methods
operation	'infix' or 'function' style formatting	infix	infix
wrap_positions	position(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')
justification	if any wrap positions are set, justify to the 'left', 'center', or 'right'	center	center	('with_justification',)
direction	Direction of the relation (normal or reversed)	normal	normal	('with_direction_reversed', 'is_reversed')

# display the expression information
stored_expr.expr_info()

	core type	sub-expressions	expression
0	Operation	operator: 1 operands: 2
1	Literal
2	ExprTuple	3, 4
3	Operation	operator: 6 operand: 8
4	Operation	operator: 6 operand: 9
5	ExprTuple	8
6	Literal
7	ExprTuple	9
8	Operation	operator: 11 operands: 10
9	Operation	operator: 11 operands: 12
10	ExprTuple	14, 13
11	Literal
12	ExprTuple	14, 15
13	Operation	operator: 35 operand: 20
14	Operation	operator: 17 operand: 21
15	Operation	operator: 35 operand: 22
16	ExprTuple	20
17	Literal
18	ExprTuple	21
19	ExprTuple	22
20	Operation	operator: 23 operands: 24
21	Literal
22	Operation	operator: 25 operands: 26
23	Literal
24	ExprTuple	28, 27
25	Literal
26	ExprTuple	28, 29
27	Operation	operator: 31 operands: 30
28	Variable
29	Operation	operator: 31 operands: 32
30	ExprTuple	33, 37
31	Literal
32	ExprTuple	33, 34
33	Literal
34	Operation	operator: 35 operand: 37
35	Literal
36	ExprTuple	37
37	Literal