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	, , ,  ⊢
	: , :
1	theorem		⊢
	proveit.logic.equality.equals_reversal
2	instantiation	3, 4, 5, 6	, , ,  ⊢
	: , : , : , :
3	theorem		⊢
	proveit.logic.equality.four_chain_transitivity
4	instantiation	10, 13, 7, 15, 8, 18, 19, 17, 16	, , ,  ⊢
	: , : , : , : , : , : , :
5	instantiation	10, 12, 11, 13, 9, 15, 16, 18, 19, 17	, , ,  ⊢
	: , : , : , : , : , : , :
6	instantiation	10, 11, 12, 13, 14, 15, 16, 17, 18, 19	, , ,  ⊢
	: , : , : , : , : , : , :
7	theorem		⊢
	proveit.numbers.numerals.decimals.nat3
8	instantiation	20	⊢
	: , : , :
9	instantiation	21	⊢
	: , :
10	theorem		⊢
	proveit.logic.booleans.conjunction.leftward_commutation
11	theorem		⊢
	proveit.numbers.numerals.decimals.nat2
12	theorem		⊢
	proveit.numbers.numerals.decimals.nat1
13	axiom		⊢
	proveit.numbers.number_sets.natural_numbers.zero_in_nats
14	instantiation	21	⊢
	: , :
15	theorem		⊢
	proveit.core_expr_types.tuples.tuple_len_0_typical_eq
16	assumption		⊢
17	assumption		⊢
18	assumption		⊢
19	assumption		⊢
20	theorem		⊢
	proveit.numbers.numerals.decimals.tuple_len_3_typical_eq
21	theorem		⊢
	proveit.numbers.numerals.decimals.tuple_len_2_typical_eq