Expression of type ExprTuple

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 ExprTuple, Function, i, v, vi
from proveit.linear_algebra import VecSum
from proveit.numbers import Interval, eight, nine, one, subtract, two

# build up the expression from sub-expressions
sub_expr1 = [i]
expr = ExprTuple(VecSum(index_or_indices = sub_expr1, summand = vi, domain = Interval(one, eight)), VecSum(index_or_indices = sub_expr1, summand = Function(v, [subtract(i, one)]), domain = Interval(two, nine)))

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_{i=1}^{8} v\left(i\right), \sum_{i=2}^{9} v\left(i - 1\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: 4 operand: 6
2	Operation	operator: 4 operand: 7
3	ExprTuple	6
4	Literal
5	ExprTuple	7
6	Lambda	parameter: 29 body: 8
7	Lambda	parameter: 29 body: 9
8	Conditional	value: 10 condition: 11
9	Conditional	value: 12 condition: 13
10	Operation	operator: 16 operand: 29
11	Operation	operator: 18 operands: 15
12	Operation	operator: 16 operand: 21
13	Operation	operator: 18 operands: 19
14	ExprTuple	29
15	ExprTuple	29, 20
16	Variable
17	ExprTuple	21
18	Literal
19	ExprTuple	29, 22
20	Operation	operator: 26 operands: 23
21	Operation	operator: 24 operands: 25
22	Operation	operator: 26 operands: 27
23	ExprTuple	35, 28
24	Literal
25	ExprTuple	29, 30
26	Literal
27	ExprTuple	31, 32
28	Literal
29	Variable
30	Operation	operator: 33 operand: 35
31	Literal
32	Literal
33	Literal
34	ExprTuple	35
35	Literal