Expression of type ExprTuple

from the theory of proveit.numbers.functions

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 Conditional, ConditionalSet, ExprTuple, i, j
from proveit.logic import Equals, NotEquals
from proveit.numbers import KroneckerDelta, one, zero

# build up the expression from sub-expressions
expr = ExprTuple(KroneckerDelta(i, j), ConditionalSet(Conditional(one, Equals(i, j)), Conditional(zero, NotEquals(i, j))))

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(\delta_{i, j}, \left\{\begin{array}{ccc}1 \textrm{ if } i = j \\ 0 \textrm{ if } i \neq j\end{array}\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: 3 operands: 14
2	Operation	operator: 4 operands: 5
3	Literal
4	Literal
5	ExprTuple	6, 7
6	Conditional	value: 8 condition: 9
7	Conditional	value: 10 condition: 11
8	Literal
9	Operation	operator: 12 operands: 14
10	Literal
11	Operation	operator: 13 operands: 14
12	Literal
13	Literal
14	ExprTuple	15, 16
15	Variable
16	Variable