What I'm Learning in CSC
226
(Discrete Mathematics)
(08.29.03) The Three Dollar Rule
Given: a v b
c -> a
c
Prove: $3 v a
Statement
|
Reason
|
1. a v b
|
Given
|
2. c -> a
|
Given
|
3. c
|
Given
|
4. -c v a
|
2, Implication
|
5. a
|
3, 4; Modus Ponens
|
6. $3
|
3 Dollar Rule
|
7. $3 v a
|
6, 5; Conjunction
|
See the 3 Dollar Rule in Action!
1. [Insert Statement Here]
2. [Insert Another Statement Here]
3. [Insert Another Statement Here]
1 and 2 are your STORE. Three is $3 in actuality. That's
the Three Dollar Rule.
Thm. In any proof above 3
steps, you may use the Three Dollar Rule alone.
See how much I'm learning!
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