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| Mirrors > Home > ILE Home > Th. List > addcomli | GIF version | ||
| Description: Addition is commutative. (Contributed by Mario Carneiro, 19-Apr-2015.) |
| Ref | Expression |
|---|---|
| mul.1 | ⊢ 𝐴 ∈ ℂ |
| mul.2 | ⊢ 𝐵 ∈ ℂ |
| addcomli.2 | ⊢ (𝐴 + 𝐵) = 𝐶 |
| Ref | Expression |
|---|---|
| addcomli | ⊢ (𝐵 + 𝐴) = 𝐶 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | mul.2 | . . 3 ⊢ 𝐵 ∈ ℂ | |
| 2 | mul.1 | . . 3 ⊢ 𝐴 ∈ ℂ | |
| 3 | 1, 2 | addcomi 8471 | . 2 ⊢ (𝐵 + 𝐴) = (𝐴 + 𝐵) |
| 4 | addcomli.2 | . 2 ⊢ (𝐴 + 𝐵) = 𝐶 | |
| 5 | 3, 4 | eqtri 2259 | 1 ⊢ (𝐵 + 𝐴) = 𝐶 |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: = wceq 1402 ∈ wcel 2209 (class class class)co 6085 ℂcc 8177 + caddc 8182 |
| 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 8279 |
| This proof depends on definitions: df-bi 117 df-cleq 2231 |
| This theorem is used by: negsubdi2i 8613 1p2e3 9441 peano2z 9684 4t4e16 9884 6t3e18 9890 6t5e30 9892 7t3e21 9895 7t4e28 9896 7t6e42 9898 7t7e49 9899 8t3e24 9901 8t4e32 9902 8t5e40 9903 8t8e64 9906 9t3e27 9908 9t4e36 9909 9t5e45 9910 9t6e54 9911 9t7e63 9912 9t8e72 9913 9t9e81 9914 4bc3eq4 11226 n2dvdsm1 12696 bitsfzo 12738 6gcd4e2 12788 gcdi 13220 2exp8 13235 2exp16 13237 37prm 13255 43prm 13256 83prm 13257 139prm 13258 163prm 13259 317prm 13260 631prm 13261 1259lem1 13262 1259lem2 13263 1259lem3 13264 1259lem4 13265 1259lem5 13266 1259prm 13267 eulerid 15953 cosq23lt0 15984 binom4 16138 log2ublem3 16142 log2ublog2 16143 lgsdir2lem1 16266 m1lgs 16323 2lgsoddprmlem3d 16348 ex-exp 16860 ex-bc 16862 ex-gcd 16864 |
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