Proof: Write Stmt Class Defs At Unchanged 12

Let's prove the following theorem:

if the following are true:

the line at time 12 = 3
the tab at time 12 = 1
statement at line 3, tab 1 = a = __add__(a, 1)
Class Map at time 12 = [ ]

then Class Map at time 13 = [ ]

Proof:

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Given

1	the line at time 12 = 3
2	the tab at time 12 = 1
3	statement at line 3, tab 1 = `a = __add__(a, 1)`
4	Class Map at time 12 = [ ]

Proof Table

#	Claim	Reason
1	Class Map at time (12 + 1) = Class Map at time 12	if the line at time 12 = 3 and the tab at time 12 = 1 and statement at line 3, tab 1 = `a = __add__(a, 1)`, then Class Map at time (12 + 1) = Class Map at time 12 (Assign If Stack (4))
2	Class Map at time (12 + 1) = [ ]	if Class Map at time (12 + 1) = Class Map at time 12 and Class Map at time 12 = [ ], then Class Map at time (12 + 1) = [ ] (Transitive Property of Equality)
3	12 + 1 = 13	12 + 1 = 13 (Fixed Value Statement)
4	Class Map at time (12 + 1) = Class Map at time 13	if 12 + 1 = 13, then Class Map at time (12 + 1) = Class Map at time 13 (Substitution)
5	Class Map at time 13 = [ ]	if Class Map at time (12 + 1) = Class Map at time 13 and Class Map at time (12 + 1) = [ ], then Class Map at time 13 = [ ] (Transitive Property of Equality Variation 2)

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