Show the Proof

import proveit
# Automation is not needed when only showing a stored proof:
proveit.defaults.automation = False # This will speed things up.
proveit.defaults.inline_pngs = False # Makes files smaller.
%show_proof

	step type	requirements	statement
0	instantiation	1, 2, 3, 4, 5, 6, 7, 8, 9, 10	⊢
	: , : , : , : , : , :
1	theorem		⊢
	proveit.logic.booleans.disjunction.association
2	reference	20	⊢
3	reference	19	⊢
4	reference	22	⊢
5	reference	21	⊢
6	instantiation	24	⊢
	: , :
7	instantiation	18, 20, 19, 22, 11, 23	⊢
	: , : , : , : , :
8	instantiation	18, 12, 23	⊢
	: , : , : , : , :
9	instantiation	13, 19, 12, 21, 16	⊢
	: , : , : , : , :
10	instantiation	13, 14, 20, 15, 22, 16	⊢
	: , : , : , : , :
11	instantiation	24	⊢
	: , :
12	theorem		⊢
	proveit.numbers.numerals.decimals.nat1
13	theorem		⊢
	proveit.logic.booleans.disjunction.each_is_bool
14	theorem		⊢
	proveit.numbers.numerals.decimals.nat3
15	instantiation	17	⊢
	: , : , :
16	instantiation	18, 19, 20, 21, 22, 23	⊢
	: , : , : , : , :
17	theorem		⊢
	proveit.numbers.numerals.decimals.tuple_len_3_typical_eq
18	theorem		⊢
	proveit.logic.booleans.conjunction.each_is_bool
19	theorem		⊢
	proveit.numbers.numerals.decimals.nat2
20	axiom		⊢
	proveit.numbers.number_sets.natural_numbers.zero_in_nats
21	instantiation	24	⊢
	: , :
22	theorem		⊢
	proveit.core_expr_types.tuples.tuple_len_0_typical_eq
23	instantiation	25, 26	⊢
	:
24	theorem		⊢
	proveit.numbers.numerals.decimals.tuple_len_2_typical_eq
25	theorem		⊢
	proveit.logic.booleans.in_bool_if_true
26	assumption		⊢