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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 8472 |
. 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 8280 |
| This proof depends on definitions: df-bi 117 df-cleq 2231 |
| This theorem is used by: negsubdi2i 8614 1p2e3 9442 peano2z 9685 4t4e16 9885 6t3e18 9891 6t5e30 9893 7t3e21 9896 7t4e28 9897 7t6e42 9899 7t7e49 9900 8t3e24 9902 8t4e32 9903 8t5e40 9904 8t8e64 9907 9t3e27 9909 9t4e36 9910 9t5e45 9911 9t6e54 9912 9t7e63 9913 9t8e72 9914 9t9e81 9915 4bc3eq4 11228 n2dvdsm1 12699 bitsfzo 12741 6gcd4e2 12791 gcdi 13223 2exp8 13238 2exp16 13240 37prm 13258 43prm 13259 83prm 13260 139prm 13261 163prm 13262 317prm 13263 631prm 13264 1259lem1 13265 1259lem2 13266 1259lem3 13267 1259lem4 13268 1259lem5 13269 1259prm 13270 eulerid 15995 cosq23lt0 16026 binom4 16180 log2ublem3 16184 log2ublog2 16185 lgsdir2lem1 16313 m1lgs 16370 2lgsoddprmlem3d 16395 ex-exp 16907 ex-bc 16909 ex-gcd 16911 |
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