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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 9691 4t4e16 9891 6t3e18 9897 6t5e30 9899 7t3e21 9902 7t4e28 9903 7t6e42 9905 7t7e49 9906 8t3e24 9908 8t4e32 9909 8t5e40 9910 8t8e64 9913 9t3e27 9915 9t4e36 9916 9t5e45 9917 9t6e54 9918 9t7e63 9919 9t8e72 9920 9t9e81 9921 4bc3eq4 11234 n2dvdsm1 12705 bitsfzo 12747 6gcd4e2 12797 gcdi 13229 2exp8 13244 2exp16 13246 37prm 13264 43prm 13265 83prm 13266 139prm 13267 163prm 13268 317prm 13269 631prm 13270 1259lem1 13271 1259lem2 13272 1259lem3 13273 1259lem4 13274 1259lem5 13275 1259prm 13276 eulerid 16029 cosq23lt0 16060 binom4 16219 log2ublem3 16223 log2ublog2 16224 lgsdir2lem1 16352 m1lgs 16409 2lgsoddprmlem3d 16434 ex-exp 16946 ex-bc 16948 ex-gcd 16950 |
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