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| Mirrors > Home > ILE Home > Th. List > 5re | GIF version | ||
| Description: The number 5 is real. (Contributed by NM, 27-May-1999.) |
| Ref | Expression |
|---|---|
| 5re | ⊢ 5 ∈ ℝ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-5 9366 | . 2 ⊢ 5 = (4 + 1) | |
| 2 | 4re 9381 | . . 3 ⊢ 4 ∈ ℝ | |
| 3 | 1re 8325 | . . 3 ⊢ 1 ∈ ℝ | |
| 4 | 2, 3 | readdcli 8339 | . 2 ⊢ (4 + 1) ∈ ℝ |
| 5 | 1, 4 | eqeltri 2311 | 1 ⊢ 5 ∈ ℝ |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: ∈ wcel 2209 (class class class)co 6085 ℝcr 8178 1c1 8180 + caddc 8182 4c4 9357 5c5 9358 |
| 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-ie1 1546 ax-ie2 1547 ax-4 1563 ax-17 1579 ax-ial 1587 ax-ext 2220 ax-1re 8273 ax-addrcl 8276 |
| This proof depends on definitions: df-bi 117 df-cleq 2231 df-clel 2234 df-2 9363 df-3 9364 df-4 9365 df-5 9366 |
| This theorem is used by: 5cn 9384 6re 9385 6pos 9405 3lt5 9481 2lt5 9482 1lt5 9483 5lt6 9484 4lt6 9485 5lt7 9490 4lt7 9491 5lt8 9497 4lt8 9498 5lt9 9505 4lt9 9506 5lt10 9911 4lt10 9912 5recm6rec 9920 5eluz3 9961 ef01bndlem 12523 vscandxnscandx 13516 slotsdifipndx 13529 slotstnscsi 13549 plendxnscandx 13562 slotsdnscsi 13577 lgsdir2lem1 16147 gausslemma2dlem4 16183 2lgslem3 16220 |
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