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| Mirrors > Home > ILE Home > Th. List > imasnopn | Unicode version | ||
| Description: If a relation graph is open, then an image set of a singleton is also open. Corollary of Proposition 4 of [BourbakiTop1] p. I.26. (Contributed by Thierry Arnoux, 14-Jan-2018.) |
| Ref | Expression |
|---|---|
| imasnopn.1 |
|
| Ref | Expression |
|---|---|
| imasnopn |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nfv 1576 |
. . . 4
| |
| 2 | nfcv 2374 |
. . . 4
| |
| 3 | nfrab1 2713 |
. . . 4
| |
| 4 | txtop 14983 |
. . . . . . . . . . . . 13
| |
| 5 | 4 | adantr 276 |
. . . . . . . . . . . 12
|
| 6 | simprl 531 |
. . . . . . . . . . . 12
| |
| 7 | eqid 2231 |
. . . . . . . . . . . . 13
| |
| 8 | 7 | eltopss 14732 |
. . . . . . . . . . . 12
|
| 9 | 5, 6, 8 | syl2anc 411 |
. . . . . . . . . . 11
|
| 10 | imasnopn.1 |
. . . . . . . . . . . . 13
| |
| 11 | eqid 2231 |
. . . . . . . . . . . . 13
| |
| 12 | 10, 11 | txuni 14986 |
. . . . . . . . . . . 12
|
| 13 | 12 | adantr 276 |
. . . . . . . . . . 11
|
| 14 | 9, 13 | sseqtrrd 3266 |
. . . . . . . . . 10
|
| 15 | imass1 5111 |
. . . . . . . . . 10
| |
| 16 | 14, 15 | syl 14 |
. . . . . . . . 9
|
| 17 | xpimasn 5185 |
. . . . . . . . . 10
| |
| 18 | 17 | ad2antll 491 |
. . . . . . . . 9
|
| 19 | 16, 18 | sseqtrd 3265 |
. . . . . . . 8
|
| 20 | 19 | sseld 3226 |
. . . . . . 7
|
| 21 | 20 | pm4.71rd 394 |
. . . . . 6
|
| 22 | elimasng 5104 |
. . . . . . . . 9
| |
| 23 | 22 | elvd 2807 |
. . . . . . . 8
|
| 24 | 23 | ad2antll 491 |
. . . . . . 7
|
| 25 | 24 | anbi2d 464 |
. . . . . 6
|
| 26 | 21, 25 | bitrd 188 |
. . . . 5
|
| 27 | rabid 2709 |
. . . . 5
| |
| 28 | 26, 27 | bitr4di 198 |
. . . 4
|
| 29 | 1, 2, 3, 28 | eqrd 3245 |
. . 3
|
| 30 | eqid 2231 |
. . . 4
| |
| 31 | 30 | mptpreima 5230 |
. . 3
|
| 32 | 29, 31 | eqtr4di 2282 |
. 2
|
| 33 | 11 | toptopon 14741 |
. . . . . 6
|
| 34 | 33 | biimpi 120 |
. . . . 5
|
| 35 | 34 | ad2antlr 489 |
. . . 4
|
| 36 | 10 | toptopon 14741 |
. . . . . . 7
|
| 37 | 36 | biimpi 120 |
. . . . . 6
|
| 38 | 37 | ad2antrr 488 |
. . . . 5
|
| 39 | simprr 533 |
. . . . 5
| |
| 40 | 35, 38, 39 | cnmptc 15005 |
. . . 4
|
| 41 | 35 | cnmptid 15004 |
. . . 4
|
| 42 | 35, 40, 41 | cnmpt1t 15008 |
. . 3
|
| 43 | cnima 14943 |
. . 3
| |
| 44 | 42, 6, 43 | syl2anc 411 |
. 2
|
| 45 | 32, 44 | eqeltrd 2308 |
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 619 ax-in2 620 ax-io 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-13 2204 ax-14 2205 ax-ext 2213 ax-coll 4204 ax-sep 4207 ax-pow 4264 ax-pr 4299 ax-un 4530 ax-setind 4635 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-fal 1403 df-nf 1509 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ne 2403 df-ral 2515 df-rex 2516 df-reu 2517 df-rab 2519 df-v 2804 df-sbc 3032 df-csb 3128 df-dif 3202 df-un 3204 df-in 3206 df-ss 3213 df-nul 3495 df-pw 3654 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-iun 3972 df-br 4089 df-opab 4151 df-mpt 4152 df-id 4390 df-xp 4731 df-rel 4732 df-cnv 4733 df-co 4734 df-dm 4735 df-rn 4736 df-res 4737 df-ima 4738 df-iota 5286 df-fun 5328 df-fn 5329 df-f 5330 df-f1 5331 df-fo 5332 df-f1o 5333 df-fv 5334 df-ov 6020 df-oprab 6021 df-mpo 6022 df-1st 6302 df-2nd 6303 df-map 6818 df-topgen 13342 df-top 14721 df-topon 14734 df-bases 14766 df-cn 14911 df-cnp 14912 df-tx 14976 |
| This theorem is referenced by: (None) |
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