Expression of type Equals

from the theory of proveit.numbers.multiplication

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 Mult, Neg, five, frac, six, three, two

# build up the expression from sub-expressions
sub_expr1 = frac(six, five)
sub_expr2 = Neg(frac(two, three))
expr = Equals(Mult(sub_expr2, Neg(sub_expr1)), Neg(Mult(sub_expr2, sub_expr1)))

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(\left(-\frac{2}{3}\right) \cdot \left(-\frac{6}{5}\right)\right) = \left(-\left(\left(-\frac{2}{3}\right) \cdot \frac{6}{5}\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: 10 operands: 5
4	Operation	operator: 14 operand: 8
5	ExprTuple	12, 7
6	ExprTuple	8
7	Operation	operator: 14 operand: 13
8	Operation	operator: 10 operands: 11
9	ExprTuple	13
10	Literal
11	ExprTuple	12, 13
12	Operation	operator: 14 operand: 17
13	Operation	operator: 20 operands: 16
14	Literal
15	ExprTuple	17
16	ExprTuple	18, 19
17	Operation	operator: 20 operands: 21
18	Literal
19	Literal
20	Literal
21	ExprTuple	22, 23
22	Literal
23	Literal