Proof: Write Skip Line Tab 4

Let's prove the following theorem:

if the following are true:
  • the line at time 4 = 5
  • the tab at time 4 = 1
  • statement at line 5, tab 2 = self.age = age

then the tab at time 5 = 1

Proof:

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Given
1 the line at time 4 = 5
2 the tab at time 4 = 1
3 statement at line 5, tab 2 = self.age = age
Proof Table
# Claim Reason
1 2 > 1 2 > 1
2 the tab at time (4 + 1) = the tab at time 4 if the line at time 4 = 5 and the tab at time 4 = 1 and statement at line 5, tab 2 = self.age = age and 2 > 1, then the tab at time (4 + 1) = the tab at time 4
3 the tab at time (4 + 1) = 1 if the tab at time (4 + 1) = the tab at time 4 and the tab at time 4 = 1, then the tab at time (4 + 1) = 1
4 4 + 1 = 5 4 + 1 = 5
5 the tab at time (4 + 1) = the tab at time 5 if 4 + 1 = 5, then the tab at time (4 + 1) = the tab at time 5
6 the tab at time 5 = 1 if the tab at time (4 + 1) = the tab at time 5 and the tab at time (4 + 1) = 1, then the tab at time 5 = 1

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