Proof: Do Variables At Unchanged 54
Let's prove the following theorem:
if the following are true:
- expression state at time 54 = "iterate_args"
- Variables Map at time 54 = [ entry self: (Python reference 0), [ ] ]
then Variables Map at time 55 = [ entry self: (Python reference 0), [ ] ]
Proof:
Given
1 | expression state at time 54 = "iterate_args" |
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2 | Variables Map at time 54 = [ entry self: (Python reference 0), [ ] ] |
# | Claim | Reason |
---|---|---|
1 | Variables Map at time (54 + 1) = Variables Map at time 54 | if expression state at time 54 = "iterate_args", then Variables Map at time (54 + 1) = Variables Map at time 54 |
2 | Variables Map at time (54 + 1) = [ entry self: (Python reference 0), [ ] ] | if Variables Map at time (54 + 1) = Variables Map at time 54 and Variables Map at time 54 = [ entry self: (Python reference 0), [ ] ], then Variables Map at time (54 + 1) = [ entry self: (Python reference 0), [ ] ] |
3 | 54 + 1 = 55 | 54 + 1 = 55 |
4 | Variables Map at time (54 + 1) = Variables Map at time 55 | if 54 + 1 = 55, then Variables Map at time (54 + 1) = Variables Map at time 55 |
5 | Variables Map at time 55 = [ entry self: (Python reference 0), [ ] ] | if Variables Map at time (54 + 1) = Variables Map at time 55 and Variables Map at time (54 + 1) = [ entry self: (Python reference 0), [ ] ], then Variables Map at time 55 = [ entry self: (Python reference 0), [ ] ] |
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