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| Mirrors > Home > ILE Home > Th. List > 3p1e4 | GIF version | ||
| Description: 3 + 1 = 4. (Contributed by Mario Carneiro, 18-Apr-2015.) |
| Ref | Expression |
|---|---|
| 3p1e4 | ⊢ (3 + 1) = 4 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-4 9368 | . 2 ⊢ 4 = (3 + 1) | |
| 2 | 1 | eqcomi 2242 | 1 ⊢ (3 + 1) = 4 |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: = wceq 1402 (class class class)co 6085 1c1 8181 + caddc 8183 3c3 9359 4c4 9360 |
| 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-ext 2220 |
| This proof depends on definitions: df-bi 117 df-cleq 2231 df-4 9368 |
| This theorem is used by: 7t6e42 9899 8t5e40 9904 9t5e45 9911 fac4 11187 4bc3eq4 11228 hash4 11271 2exp16 13240 43prm 13259 83prm 13260 317prm 13263 1259lem2 13266 1259lem3 13267 1259lem4 13268 1259lem5 13269 cosq23lt0 16026 binom4 16180 log2ublem3 16184 log2ublog2 16185 bclbnd 16268 |
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