Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > ILE Home > Th. List > 7re | GIF version |
Description: The number 7 is real. (Contributed by NM, 27-May-1999.) |
Ref | Expression |
---|---|
7re | ⊢ 7 ∈ ℝ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-7 8784 | . 2 ⊢ 7 = (6 + 1) | |
2 | 6re 8801 | . . 3 ⊢ 6 ∈ ℝ | |
3 | 1re 7765 | . . 3 ⊢ 1 ∈ ℝ | |
4 | 2, 3 | readdcli 7779 | . 2 ⊢ (6 + 1) ∈ ℝ |
5 | 1, 4 | eqeltri 2212 | 1 ⊢ 7 ∈ ℝ |
Colors of variables: wff set class |
Syntax hints: ∈ wcel 1480 (class class class)co 5774 ℝcr 7619 1c1 7621 + caddc 7623 6c6 8775 7c7 8776 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-5 1423 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-4 1487 ax-17 1506 ax-ial 1514 ax-ext 2121 ax-1re 7714 ax-addrcl 7717 |
This theorem depends on definitions: df-bi 116 df-cleq 2132 df-clel 2135 df-2 8779 df-3 8780 df-4 8781 df-5 8782 df-6 8783 df-7 8784 |
This theorem is referenced by: 7cn 8804 8re 8805 8pos 8823 5lt7 8905 4lt7 8906 3lt7 8907 2lt7 8908 1lt7 8909 7lt8 8910 6lt8 8911 7lt9 8918 6lt9 8919 7lt10 9314 6lt10 9315 |
Copyright terms: Public domain | W3C validator |