| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 9273 |
. 2
| |
| 2 | ax-1cn 8185 |
. 2
| |
| 3 | 2p1e3 9336 |
. 2
| |
| 4 | 1, 2, 3 | addcomli 8383 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-11 1555 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-ext 2213 ax-resscn 8184 ax-1cn 8185 ax-1re 8186 ax-addrcl 8189 ax-addcom 8192 |
| This theorem depends on definitions: df-bi 117 df-nf 1510 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-in 3207 df-ss 3214 df-2 9261 df-3 9262 |
| This theorem is referenced by: binom3 10982 3lcm2e6woprm 12738 2exp16 13090 1kp2ke3k 16438 |
| Copyright terms: Public domain | W3C validator |