Expression of type Equals

from the theory of proveit.linear_algebra.addition

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 v, w, x, y, z
from proveit.linear_algebra import TensorProd, VecAdd
from proveit.logic import Equals

# build up the expression from sub-expressions
sub_expr1 = TensorProd(y, z)
sub_expr2 = TensorProd(y, w)
sub_expr3 = TensorProd(y, v)
expr = Equals(VecAdd(TensorProd(x, sub_expr1), TensorProd(x, sub_expr2), TensorProd(x, sub_expr3)), TensorProd(x, VecAdd(sub_expr1, sub_expr2, sub_expr3))).with_wrapping_at(2)

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())

\begin{array}{c} \begin{array}{l} \left(\left(x {\otimes} \left(y {\otimes} z\right)\right) + \left(x {\otimes} \left(y {\otimes} w\right)\right) + \left(x {\otimes} \left(y {\otimes} v\right)\right)\right) =  \\ \left(x {\otimes} \left(\left(y {\otimes} z\right) + \left(y {\otimes} w\right) + \left(y {\otimes} v\right)\right)\right) \end{array} \end{array}

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.	()	(2)	('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: 14 operands: 5
4	Operation	operator: 22 operands: 6
5	ExprTuple	7, 8, 9
6	ExprTuple	16, 10
7	Operation	operator: 22 operands: 11
8	Operation	operator: 22 operands: 12
9	Operation	operator: 22 operands: 13
10	Operation	operator: 14 operands: 15
11	ExprTuple	16, 17
12	ExprTuple	16, 18
13	ExprTuple	16, 19
14	Literal
15	ExprTuple	17, 18, 19
16	Variable
17	Operation	operator: 22 operands: 20
18	Operation	operator: 22 operands: 21
19	Operation	operator: 22 operands: 23
20	ExprTuple	26, 24
21	ExprTuple	26, 25
22	Literal
23	ExprTuple	26, 27
24	Variable
25	Variable
26	Variable
27	Variable