Proof: Write Stmt Class Defs At Unchanged 23

Let's prove the following theorem:

if the following are true:
  • the line at time 23 = 2
  • the tab at time 23 = 1
  • statement at line 2, tab 1 = z = __add__(x, 3)
  • Class Map at time 23 = [ ]

then Class Map at time 24 = [ ]

Proof:

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Given
1 the line at time 23 = 2
2 the tab at time 23 = 1
3 statement at line 2, tab 1 = z = __add__(x, 3)
4 Class Map at time 23 = [ ]
Proof Table
# Claim Reason
1 Class Map at time (23 + 1) = Class Map at time 23 if the line at time 23 = 2 and the tab at time 23 = 1 and statement at line 2, tab 1 = z = __add__(x, 3), then Class Map at time (23 + 1) = Class Map at time 23
2 Class Map at time (23 + 1) = [ ] if Class Map at time (23 + 1) = Class Map at time 23 and Class Map at time 23 = [ ], then Class Map at time (23 + 1) = [ ]
3 23 + 1 = 24 23 + 1 = 24
4 Class Map at time (23 + 1) = Class Map at time 24 if 23 + 1 = 24, then Class Map at time (23 + 1) = Class Map at time 24
5 Class Map at time 24 = [ ] if Class Map at time (23 + 1) = Class Map at time 24 and Class Map at time (23 + 1) = [ ], then Class Map at time 24 = [ ]

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