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| Mirrors > Home > ILE Home > Th. List > 1p2e3 | Unicode version | ||
| Description: 1 + 2 = 3 (common case). (Contributed by David A. Wheeler, 8-Dec-2018.) |
| Ref | Expression |
|---|---|
| 1p2e3 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 2cn 9378 |
. 2
| |
| 2 | ax-1cn 8273 |
. 2
| |
| 3 | 2p1e3 9441 |
. 2
| |
| 4 | 1, 2, 3 | addcomli 8473 |
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-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 8272 ax-1cn 8273 ax-1re 8274 ax-addrcl 8277 ax-addcom 8280 |
| 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 9366 df-3 9367 |
| This theorem is used by: binom3 11109 3lcm2e6woprm 12883 2exp16 13240 prmlem1a 13244 23prm 13256 prmlem2 13257 83prm 13260 139prm 13261 163prm 13262 317prm 13263 631prm 13264 1259lem4 13268 1259prm 13270 log2ublem3 16184 log2ublog2 16185 1kp2ke3k 16904 |
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