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| Mirrors > Home > ILE Home > Th. List > 4re | Unicode version | ||
| Description: The number 4 is real. (Contributed by NM, 27-May-1999.) |
| Ref | Expression |
|---|---|
| 4re |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-4 9374 |
. 2
| |
| 2 | 3re 9387 |
. . 3
| |
| 3 | 1re 8331 |
. . 3
| |
| 4 | 2, 3 | readdcli 8345 |
. 2
|
| 5 | 1, 4 | eqeltri 2311 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| 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 8279 ax-addrcl 8282 |
| This proof depends on definitions: df-bi 117 df-cleq 2231 df-clel 2234 df-2 9372 df-3 9373 df-4 9374 |
| This theorem is used by: 4cn 9391 5re 9392 4ne0 9411 4ap0 9412 5pos 9413 2lt4 9489 1lt4 9490 4lt5 9491 3lt5 9492 2lt5 9493 1lt5 9494 4lt6 9496 3lt6 9497 4lt7 9502 3lt7 9503 4lt8 9509 3lt8 9510 4lt9 9517 3lt9 9518 8th4div3 9535 div4p1lem1div2 9570 4lt10 9928 3lt10 9929 uzuzle24 9979 uzuzle34 9980 eluz4eluz2 9984 fz0to4untppr 10548 fzo0to42pr 10655 fldiv4p1lem1div2 10761 faclbnd2 11202 4bc2eq6 11235 resqrexlemover 11798 resqrexlemcalc1 11802 resqrexlemcalc2 11803 resqrexlemcalc3 11804 resqrexlemnm 11806 resqrexlemga 11811 sqrt2gt1lt2 11837 amgm2 11907 ef01bndlem 12548 sin01bnd 12549 cos01bnd 12550 cos2bnd 12552 flodddiv4 12728 4sqlem12 13210 tsetndxnstarvndx 13607 slotsdifplendx 13623 slotsdifdsndx 13638 slotsdifunifndx 13645 dveflem 15952 sin0pilem2 16009 sinhalfpilem 16018 sincosq1lem 16052 coseq0negpitopi 16063 tangtx 16065 sincos4thpi 16067 pigt3 16071 chtublem 16295 bposlem2 16312 bposlem6 16316 bposlem7 16317 bposlem8 16318 bposlem9 16319 gausslemma2dlem0d 16376 gausslemma2dlem3 16387 gausslemma2dlem4 16388 |
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