Proof: Do Class Defs At Unchanged 15
Let's prove the following theorem:
if the following are true:
- expression state at time 15 = "begin_expr"
- Class Map at time 15 = [ ]
then Class Map at time 16 = [ ]
Proof:
Given
1 | expression state at time 15 = "begin_expr" |
---|---|
2 | Class Map at time 15 = [ ] |
# | Claim | Reason |
---|---|---|
1 | Class Map at time (15 + 1) = Class Map at time 15 | if expression state at time 15 = "begin_expr", then Class Map at time (15 + 1) = Class Map at time 15 |
2 | Class Map at time (15 + 1) = [ ] | if Class Map at time (15 + 1) = Class Map at time 15 and Class Map at time 15 = [ ], then Class Map at time (15 + 1) = [ ] |
3 | 15 + 1 = 16 | 15 + 1 = 16 |
4 | Class Map at time (15 + 1) = Class Map at time 16 | if 15 + 1 = 16, then Class Map at time (15 + 1) = Class Map at time 16 |
5 | Class Map at time 16 = [ ] | if Class Map at time (15 + 1) = Class Map at time 16 and Class Map at time (15 + 1) = [ ], then Class Map at time 16 = [ ] |
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