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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 9368 | . 2 ⊢ 5 = (4 + 1) | |
| 2 | 4re 9383 | . . 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 9359 5c5 9360 |
| 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 9365 df-3 9366 df-4 9367 df-5 9368 |
| This theorem is used by: 5cn 9386 6re 9387 6pos 9407 3lt5 9485 2lt5 9486 1lt5 9487 5lt6 9488 4lt6 9489 5lt7 9494 4lt7 9495 5lt8 9501 4lt8 9502 5lt9 9509 4lt9 9510 5lt10 9920 4lt10 9921 5recm6rec 9929 5eluz3 9970 ef01bndlem 12539 prmlem1 13242 vscandxnscandx 13565 slotsdifipndx 13578 slotstnscsi 13598 plendxnscandx 13611 slotsdnscsi 13626 ppiublem1 16192 ppiqub 16194 bposlem3 16211 bposlem4 16212 bposlem5 16213 lgsdir2lem1 16245 gausslemma2dlem4 16281 2lgslem3 16318 |
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