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PA Properties Ch1-2
| Name | Symbols |
|---|---|
| Substitution | If a = b then a can be replaced by b |
| Commutative (Addition) | a + b = b + a |
| Commutative (Multiplication) | ab = ba |
| Associative (Addition) | (a + b) + c = a + (b + c) |
| Associative (Multiplication) | (ab)c = a(bc) |
| Identity (Addition) | a + 0 = a |
| Identity (Multiplication) | a x 1 = a |
| Zero Product | a x 0 = 0 |
| Symmetric | If a = b then b = a |
| Transitive | If a = b and b = c, then a = c |
| Inverse (Addition) | a + (–a) = 0 |