| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > 1p2e3 | GIF version | ||
| Description: 1 + 2 = 3 (common case). (Contributed by David A. Wheeler, 8-Dec-2018.) |
| Ref | Expression |
|---|---|
| 1p2e3 | ⊢ (1 + 2) = 3 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 2cn 9384 | . 2 ⊢ 2 ∈ ℂ | |
| 2 | ax-1cn 8278 | . 2 ⊢ 1 ∈ ℂ | |
| 3 | 2p1e3 9447 | . 2 ⊢ (2 + 1) = 3 | |
| 4 | 1, 2, 3 | addcomli 8478 | 1 ⊢ (1 + 2) = 3 |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: = wceq 1402 (class class class)co 6088 1c1 8186 + caddc 8188 2c2 9364 3c3 9365 |
| 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-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-11 1559 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 ax-resscn 8277 ax-1cn 8278 ax-1re 8279 ax-addrcl 8282 ax-addcom 8285 |
| This proof depends on definitions: df-bi 117 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-in 3226 df-ss 3233 df-2 9372 df-3 9373 |
| This theorem is used by: binom3 11114 3lcm2e6woprm 12888 2exp16 13245 prmlem1a 13249 23prm 13261 prmlem2 13262 83prm 13265 139prm 13266 163prm 13267 317prm 13268 631prm 13269 1259lem4 13273 1259prm 13275 log2ublem3 16240 log2ublog2 16241 1kp2ke3k 16960 |
| Copyright terms: Public domain | W3C validator |