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Show the Proof

In [1]:
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
Out[1]:
 step typerequirementsstatement
0generalization1  ⊢  
1instantiation2, 3, 4, , , , ,  ⊢  
  :
2axiom  ⊢  
 proveit.logic.booleans.implication.affirmation_via_contradiction
3assumption  ⊢  
4deduction5, , , ,  ⊢  
5instantiation6, 7, 8, 9, , , , ,  ⊢  
  : , :
6theorem  ⊢  
 proveit.logic.booleans.disjunction.binary_or_contradiction
7assumption  ⊢  
8instantiation12, 10, 11, 15, ,  ⊢  
  : , :
9instantiation12, 13, 14, 15, ,  ⊢  
  : , :
10assumption  ⊢  
11assumption  ⊢  
12theorem  ⊢  
 proveit.logic.booleans.implication.modus_tollens_denial
13assumption  ⊢  
14assumption  ⊢  
15assumption  ⊢