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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 9052 | . 2 ⊢ 5 = (4 + 1) | |
| 2 | 4re 9067 | . . 3 ⊢ 4 ∈ ℝ | |
| 3 | 1re 8025 | . . 3 ⊢ 1 ∈ ℝ | |
| 4 | 2, 3 | readdcli 8039 | . 2 ⊢ (4 + 1) ∈ ℝ | 
| 5 | 1, 4 | eqeltri 2269 | 1 ⊢ 5 ∈ ℝ | 
| Colors of variables: wff set class | 
| Syntax hints: ∈ wcel 2167 (class class class)co 5922 ℝcr 7878 1c1 7880 + caddc 7882 4c4 9043 5c5 9044 | 
| 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 1461 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-4 1524 ax-17 1540 ax-ial 1548 ax-ext 2178 ax-1re 7973 ax-addrcl 7976 | 
| This theorem depends on definitions: df-bi 117 df-cleq 2189 df-clel 2192 df-2 9049 df-3 9050 df-4 9051 df-5 9052 | 
| This theorem is referenced by: 5cn 9070 6re 9071 6pos 9091 3lt5 9167 2lt5 9168 1lt5 9169 5lt6 9170 4lt6 9171 5lt7 9176 4lt7 9177 5lt8 9183 4lt8 9184 5lt9 9191 4lt9 9192 5lt10 9591 4lt10 9592 5recm6rec 9600 ef01bndlem 11921 vscandxnscandx 12839 slotsdifipndx 12852 slotstnscsi 12872 plendxnscandx 12885 slotsdnscsi 12896 lgsdir2lem1 15269 gausslemma2dlem4 15305 2lgslem3 15342 | 
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