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| Mirrors > Home > ILE Home > Th. List > ioof | Unicode version | ||
| Description: The set of open intervals of extended reals maps to subsets of reals. (Contributed by NM, 7-Feb-2007.) (Revised by Mario Carneiro, 16-Nov-2013.) | 
| Ref | Expression | 
|---|---|
| ioof | 
 | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | iooval 9983 | 
. . . 4
 | |
| 2 | ioossre 10010 | 
. . . . 5
 | |
| 3 | df-ov 5925 | 
. . . . . . 7
 | |
| 4 | iooex 9982 | 
. . . . . . . 8
 | |
| 5 | vex 2766 | 
. . . . . . . . 9
 | |
| 6 | vex 2766 | 
. . . . . . . . 9
 | |
| 7 | 5, 6 | opex 4262 | 
. . . . . . . 8
 | 
| 8 | 4, 7 | fvex 5578 | 
. . . . . . 7
 | 
| 9 | 3, 8 | eqeltri 2269 | 
. . . . . 6
 | 
| 10 | 9 | elpw 3611 | 
. . . . 5
 | 
| 11 | 2, 10 | mpbir 146 | 
. . . 4
 | 
| 12 | 1, 11 | eqeltrrdi 2288 | 
. . 3
 | 
| 13 | 12 | rgen2a 2551 | 
. 2
 | 
| 14 | df-ioo 9967 | 
. . 3
 | |
| 15 | 14 | fmpo 6259 | 
. 2
 | 
| 16 | 13, 15 | mpbi 145 | 
1
 | 
| Colors of variables: wff set class | 
| Syntax hints:     | 
| 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-in1 615 ax-in2 616 ax-io 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-13 2169 ax-14 2170 ax-ext 2178 ax-sep 4151 ax-pow 4207 ax-pr 4242 ax-un 4468 ax-setind 4573 ax-cnex 7970 ax-resscn 7971 ax-pre-ltirr 7991 ax-pre-ltwlin 7992 ax-pre-lttrn 7993 | 
| This theorem depends on definitions: df-bi 117 df-3or 981 df-3an 982 df-tru 1367 df-fal 1370 df-nf 1475 df-sb 1777 df-eu 2048 df-mo 2049 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-ne 2368 df-nel 2463 df-ral 2480 df-rex 2481 df-rab 2484 df-v 2765 df-sbc 2990 df-csb 3085 df-dif 3159 df-un 3161 df-in 3163 df-ss 3170 df-pw 3607 df-sn 3628 df-pr 3629 df-op 3631 df-uni 3840 df-iun 3918 df-br 4034 df-opab 4095 df-mpt 4096 df-id 4328 df-po 4331 df-iso 4332 df-xp 4669 df-rel 4670 df-cnv 4671 df-co 4672 df-dm 4673 df-rn 4674 df-res 4675 df-ima 4676 df-iota 5219 df-fun 5260 df-fn 5261 df-f 5262 df-fv 5266 df-ov 5925 df-oprab 5926 df-mpo 5927 df-1st 6198 df-2nd 6199 df-pnf 8063 df-mnf 8064 df-xr 8065 df-ltxr 8066 df-le 8067 df-ioo 9967 | 
| This theorem is referenced by: unirnioo 10048 dfioo2 10049 ioorebasg 10050 qtopbasss 14757 retopbas 14759 tgioo 14790 tgqioo 14791 | 
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