Proof: Do Class Defs At Unchanged 30
Let's prove the following theorem:
if the following are true:
- expression state at time 30 = "begin_expr"
- Class Map at time 30 = [ ]
then Class Map at time 31 = [ ]
Proof:
Given
1 | expression state at time 30 = "begin_expr" |
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2 | Class Map at time 30 = [ ] |
# | Claim | Reason |
---|---|---|
1 | Class Map at time (30 + 1) = Class Map at time 30 | if expression state at time 30 = "begin_expr", then Class Map at time (30 + 1) = Class Map at time 30 |
2 | Class Map at time (30 + 1) = [ ] | if Class Map at time (30 + 1) = Class Map at time 30 and Class Map at time 30 = [ ], then Class Map at time (30 + 1) = [ ] |
3 | 30 + 1 = 31 | 30 + 1 = 31 |
4 | Class Map at time (30 + 1) = Class Map at time 31 | if 30 + 1 = 31, then Class Map at time (30 + 1) = Class Map at time 31 |
5 | Class Map at time 31 = [ ] | if Class Map at time (30 + 1) = Class Map at time 31 and Class Map at time (30 + 1) = [ ], then Class Map at time 31 = [ ] |
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