Proof: Do Class Defs At Unchanged 4

Let's prove the following theorem:

if the following are true:
  • expression state at time 4 = "begin_expr"
  • Class Map at time 4 = [ ]

then Class Map at time 5 = [ ]

Proof:

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Given
1 expression state at time 4 = "begin_expr"
2 Class Map at time 4 = [ ]
Proof Table
# Claim Reason
1 Class Map at time (4 + 1) = Class Map at time 4 if expression state at time 4 = "begin_expr", then Class Map at time (4 + 1) = Class Map at time 4
2 Class Map at time (4 + 1) = [ ] if Class Map at time (4 + 1) = Class Map at time 4 and Class Map at time 4 = [ ], then Class Map at time (4 + 1) = [ ]
3 4 + 1 = 5 4 + 1 = 5
4 Class Map at time (4 + 1) = Class Map at time 5 if 4 + 1 = 5, then Class Map at time (4 + 1) = Class Map at time 5
5 Class Map at time 5 = [ ] if Class Map at time (4 + 1) = Class Map at time 5 and Class Map at time (4 + 1) = [ ], then Class Map at time 5 = [ ]

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