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| Mirrors > Home > ILE Home > Th. List > addcomli | Unicode version | ||
| Description: Addition is commutative. (Contributed by Mario Carneiro, 19-Apr-2015.) |
| Ref | Expression |
|---|---|
| mul.1 |
|
| mul.2 |
|
| addcomli.2 |
|
| Ref | Expression |
|---|---|
| addcomli |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | mul.2 |
. . 3
| |
| 2 | mul.1 |
. . 3
| |
| 3 | 1, 2 | addcomi 8477 |
. 2
|
| 4 | addcomli.2 |
. 2
| |
| 5 | 3, 4 | eqtri 2259 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-5 1500 ax-gen 1502 ax-4 1563 ax-17 1579 ax-ext 2220 ax-addcom 8285 |
| This proof depends on definitions: df-bi 117 df-cleq 2231 |
| This theorem is used by: negsubdi2i 8619 1p2e3 9448 peano2z 9689 4t4e16 9890 6t3e18 9896 6t5e30 9898 7t3e21 9901 7t4e28 9902 7t6e42 9904 7t7e49 9905 8t3e24 9907 8t4e32 9908 8t5e40 9909 8t8e64 9912 9t3e27 9914 9t4e36 9915 9t5e45 9916 9t6e54 9917 9t7e63 9918 9t8e72 9919 9t9e81 9920 4bc3eq4 11233 n2dvdsm1 12704 bitsfzo 12746 6gcd4e2 12796 gcdi 13228 2exp8 13243 2exp16 13245 37prm 13263 43prm 13264 83prm 13265 139prm 13266 163prm 13267 317prm 13268 631prm 13269 1259lem1 13270 1259lem2 13271 1259lem3 13272 1259lem4 13273 1259lem5 13274 1259prm 13275 eulerid 16046 cosq23lt0 16077 binom4 16236 log2ublem3 16240 log2ublog2 16241 lgsdir2lem1 16369 m1lgs 16426 2lgsoddprmlem3d 16451 ex-exp 16963 ex-bc 16965 ex-gcd 16967 |
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