Expression of type ExprTuple

from the theory of proveit.numbers.summation

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 ExprTuple, a, b, l
from proveit.numbers import Add, Integer, Mult, Sum, one

# build up the expression from sub-expressions
sub_expr1 = [l]
sub_expr2 = Mult(a, b)
sub_expr3 = Add(l, one)
expr = ExprTuple(Sum(index_or_indices = sub_expr1, summand = Mult(sub_expr2, sub_expr3), domain = Integer), Mult(sub_expr2, Sum(index_or_indices = sub_expr1, summand = sub_expr3, domain = Integer)))

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(\sum_{l \in \mathbb{Z}}~\left(\left(a \cdot b\right) \cdot \left(l + 1\right)\right), \left(a \cdot b\right) \cdot \left[\sum_{l \in \mathbb{Z}}~\left(l + 1\right)\right]\right)

stored_expr.style_options()

name	description	default	current value	related methods
wrap_positions	position(s) at which wrapping is to occur; 'n' is after the nth comma.	()	()	('with_wrapping_at',)
justification	if any wrap positions are set, justify to the 'left', 'center', or 'right'	left	left	('with_justification',)

# display the expression information
stored_expr.expr_info()

	core type	sub-expressions	expression
0	ExprTuple	1, 2
1	Operation	operator: 8 operand: 5
2	Operation	operator: 18 operands: 4
3	ExprTuple	5
4	ExprTuple	15, 6
5	Lambda	parameter: 27 body: 7
6	Operation	operator: 8 operand: 11
7	Conditional	value: 10 condition: 17
8	Literal
9	ExprTuple	11
10	Operation	operator: 18 operands: 12
11	Lambda	parameter: 27 body: 14
12	ExprTuple	15, 16
13	ExprTuple	27
14	Conditional	value: 16 condition: 17
15	Operation	operator: 18 operands: 19
16	Operation	operator: 20 operands: 21
17	Operation	operator: 22 operands: 23
18	Literal
19	ExprTuple	24, 25
20	Literal
21	ExprTuple	27, 26
22	Literal
23	ExprTuple	27, 28
24	Variable
25	Variable
26	Literal
27	Variable
28	Literal