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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 9384 |
. 2
| |
| 2 | ax-1cn 8278 |
. 2
| |
| 3 | 2p1e3 9447 |
. 2
| |
| 4 | 1, 2, 3 | addcomli 8478 |
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 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 11115 3lcm2e6woprm 12889 2exp16 13246 prmlem1a 13250 23prm 13262 prmlem2 13263 83prm 13266 139prm 13267 163prm 13268 317prm 13269 631prm 13270 1259lem4 13274 1259prm 13276 log2ublem3 16223 log2ublog2 16224 1kp2ke3k 16943 |
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