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, k
from proveit.numbers import Add, Interval, Sum, eight, nine, seven, subtract, two

# build up the expression from sub-expressions
sub_expr1 = [k]
sub_expr2 = subtract(k, two)
expr = ExprTuple(Sum(index_or_indices = sub_expr1, summand = sub_expr2, domain = Interval(a, nine)), Add(Sum(index_or_indices = sub_expr1, summand = sub_expr2, domain = Interval(a, seven)), Sum(index_or_indices = sub_expr1, summand = sub_expr2, domain = Interval(eight, 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_{k = a}^{9} \left(k - 2\right), \left(\sum_{k = a}^{7} \left(k - 2\right)\right) + \left(\sum_{k = 8}^{9} \left(k - 2\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: 10 operand: 5
2	Operation	operator: 25 operands: 4
3	ExprTuple	5
4	ExprTuple	6, 7
5	Lambda	parameter: 31 body: 8
6	Operation	operator: 10 operand: 13
7	Operation	operator: 10 operand: 14
8	Conditional	value: 21 condition: 12
9	ExprTuple	13
10	Literal
11	ExprTuple	14
12	Operation	operator: 27 operands: 15
13	Lambda	parameter: 31 body: 16
14	Lambda	parameter: 31 body: 18
15	ExprTuple	31, 19
16	Conditional	value: 21 condition: 20
17	ExprTuple	31
18	Conditional	value: 21 condition: 22
19	Operation	operator: 36 operands: 23
20	Operation	operator: 27 operands: 24
21	Operation	operator: 25 operands: 26
22	Operation	operator: 27 operands: 28
23	ExprTuple	38, 42
24	ExprTuple	31, 29
25	Literal
26	ExprTuple	31, 30
27	Literal
28	ExprTuple	31, 32
29	Operation	operator: 36 operands: 33
30	Operation	operator: 34 operand: 40
31	Variable
32	Operation	operator: 36 operands: 37
33	ExprTuple	38, 39
34	Literal
35	ExprTuple	40
36	Literal
37	ExprTuple	41, 42
38	Variable
39	Literal
40	Literal
41	Literal
42	Literal