Expression of type ExprTuple

from the theory of proveit.numbers.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 ExprRange, ExprTuple, IndexedVar, Variable, a, n
from proveit.numbers import Add, subtract, three, two

# build up the expression from sub-expressions
sub_expr1 = Variable("_a", latex_format = r"{_{-}a}")
expr = ExprTuple(Add(ExprRange(sub_expr1, IndexedVar(a, sub_expr1), three, subtract(n, two))))

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(a_{3} +  a_{4} +  \ldots +  a_{n - 2}\right)

stored_expr.style_options()

no style options

# display the expression information
stored_expr.expr_info()

	core type	sub-expressions	expression
0	ExprTuple	1
1	Operation	operator: 8 operands: 2
2	ExprTuple	3
3	ExprRange	lambda_map: 4 start_index: 5 end_index: 6
4	Lambda	parameter: 14 body: 7
5	Literal
6	Operation	operator: 8 operands: 9
7	IndexedVar	variable: 10 index: 14
8	Literal
9	ExprTuple	12, 13
10	Variable
11	ExprTuple	14
12	Variable
13	Operation	operator: 15 operand: 17
14	Variable
15	Literal
16	ExprTuple	17
17	Literal