Proof: Do Tab At Unchanged 51

Let's prove the following theorem:

if the following are true:
  • expression state at time 51 = "iterate_args"
  • the tab at time 51 = 2

then the tab at time 52 = 2

Proof:

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Given
1 expression state at time 51 = "iterate_args"
2 the tab at time 51 = 2
Proof Table
# Claim Reason
1 the tab at time (51 + 1) = the tab at time 51 if expression state at time 51 = "iterate_args", then the tab at time (51 + 1) = the tab at time 51
2 the tab at time (51 + 1) = 2 if the tab at time (51 + 1) = the tab at time 51 and the tab at time 51 = 2, then the tab at time (51 + 1) = 2
3 51 + 1 = 52 51 + 1 = 52
4 the tab at time (51 + 1) = the tab at time 52 if 51 + 1 = 52, then the tab at time (51 + 1) = the tab at time 52
5 the tab at time 52 = 2 if the tab at time (51 + 1) = the tab at time 52 and the tab at time (51 + 1) = 2, then the tab at time 52 = 2

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