Expression of type Equals

from the theory of proveit.linear_algebra.tensors

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 beta, gamma, i, x, y
from proveit.linear_algebra import ScalarMult, TensorProd, VecSum
from proveit.logic import Equals
from proveit.numbers import Add, Interval, Mult, four, one, two

# build up the expression from sub-expressions
sub_expr1 = [i]
sub_expr2 = Mult(gamma, beta)
sub_expr3 = TensorProd(x, y)
sub_expr4 = Interval(two, four)
sub_expr5 = Mult(i, Add(i, one))
expr = Equals(ScalarMult(sub_expr2, VecSum(index_or_indices = sub_expr1, summand = ScalarMult(sub_expr5, sub_expr3), domain = sub_expr4)), VecSum(index_or_indices = sub_expr1, summand = ScalarMult(Mult(sub_expr2, sub_expr5), sub_expr3), domain = sub_expr4)).with_wrapping_at(1)

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(\gamma \cdot \beta\right) \cdot \left(\sum_{i=2}^{4} \left(\left(i \cdot \left(i + 1\right)\right) \cdot \left(x {\otimes} y\right)\right)\right)\right) \\  = \left(\sum_{i=2}^{4} \left(\left(\left(\gamma \cdot \beta\right) \cdot \left(i \cdot \left(i + 1\right)\right)\right) \cdot \left(x {\otimes} y\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.	()	(1)	('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: 20 operands: 5
4	Operation	operator: 9 operand: 8
5	ExprTuple	27, 7
6	ExprTuple	8
7	Operation	operator: 9 operand: 12
8	Lambda	parameter: 45 body: 11
9	Literal
10	ExprTuple	12
11	Conditional	value: 13 condition: 18
12	Lambda	parameter: 45 body: 15
13	Operation	operator: 20 operands: 16
14	ExprTuple	45
15	Conditional	value: 17 condition: 18
16	ExprTuple	19, 25
17	Operation	operator: 20 operands: 21
18	Operation	operator: 22 operands: 23
19	Operation	operator: 34 operands: 24
20	Literal
21	ExprTuple	28, 25
22	Literal
23	ExprTuple	45, 26
24	ExprTuple	27, 28
25	Operation	operator: 29 operands: 30
26	Operation	operator: 31 operands: 32
27	Operation	operator: 34 operands: 33
28	Operation	operator: 34 operands: 35
29	Literal
30	ExprTuple	36, 37
31	Literal
32	ExprTuple	38, 39
33	ExprTuple	40, 41
34	Literal
35	ExprTuple	45, 42
36	Variable
37	Variable
38	Literal
39	Literal
40	Variable
41	Variable
42	Operation	operator: 43 operands: 44
43	Literal
44	ExprTuple	45, 46
45	Variable
46	Literal