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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 9369 | . 2 ⊢ 5 = (4 + 1) | |
| 2 | 4re 9384 | . . 3 ⊢ 4 ∈ ℝ | |
| 3 | 1re 8326 | . . 3 ⊢ 1 ∈ ℝ | |
| 4 | 2, 3 | readdcli 8340 | . 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 8179 1c1 8181 + caddc 8183 4c4 9360 5c5 9361 |
| 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 8274 ax-addrcl 8277 |
| This proof depends on definitions: df-bi 117 df-cleq 2231 df-clel 2234 df-2 9366 df-3 9367 df-4 9368 df-5 9369 |
| This theorem is used by: 5cn 9387 6re 9388 6pos 9408 3lt5 9486 2lt5 9487 1lt5 9488 5lt6 9489 4lt6 9490 5lt7 9495 4lt7 9496 5lt8 9502 4lt8 9503 5lt9 9510 4lt9 9511 5lt10 9921 4lt10 9922 5recm6rec 9930 5eluz3 9971 ef01bndlem 12542 prmlem1 13245 vscandxnscandx 13569 slotsdifipndx 13582 slotstnscsi 13602 plendxnscandx 13615 slotsdnscsi 13630 ppiublem1 16252 ppiqub 16254 bposlem3 16274 bposlem4 16275 bposlem5 16276 bposlem6 16277 bposlem8 16279 bposlem9 16280 lgsdir2lem1 16313 gausslemma2dlem4 16349 2lgslem3 16386 |
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