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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 1581 |
. . . 4
| |
| 2 | nfcv 2392 |
. . . 4
| |
| 3 | nfrab1 2732 |
. . . 4
| |
| 4 | txtop 15284 |
. . . . . . . . . . . . 13
| |
| 5 | 4 | adantr 276 |
. . . . . . . . . . . 12
|
| 6 | simprl 535 |
. . . . . . . . . . . 12
| |
| 7 | eqid 2238 |
. . . . . . . . . . . . 13
| |
| 8 | 7 | eltopss 15033 |
. . . . . . . . . . . 12
|
| 9 | 5, 6, 8 | syl2anc 415 |
. . . . . . . . . . 11
|
| 10 | imasnopn.1 |
. . . . . . . . . . . . 13
| |
| 11 | eqid 2238 |
. . . . . . . . . . . . 13
| |
| 12 | 10, 11 | txuni 15287 |
. . . . . . . . . . . 12
|
| 13 | 12 | adantr 276 |
. . . . . . . . . . 11
|
| 14 | 9, 13 | sseqtrrd 3287 |
. . . . . . . . . 10
|
| 15 | imass1 5157 |
. . . . . . . . . 10
| |
| 16 | 14, 15 | syl 14 |
. . . . . . . . 9
|
| 17 | xpimasn 5231 |
. . . . . . . . . 10
| |
| 18 | 17 | ad2antll 495 |
. . . . . . . . 9
|
| 19 | 16, 18 | sseqtrd 3286 |
. . . . . . . 8
|
| 20 | 19 | sseld 3247 |
. . . . . . 7
|
| 21 | 20 | pm4.71rd 398 |
. . . . . 6
|
| 22 | elimasng 5150 |
. . . . . . . . 9
| |
| 23 | 22 | elvd 2826 |
. . . . . . . 8
|
| 24 | 23 | ad2antll 495 |
. . . . . . 7
|
| 25 | 24 | anbi2d 468 |
. . . . . 6
|
| 26 | 21, 25 | bitrd 188 |
. . . . 5
|
| 27 | rabid 2727 |
. . . . 5
| |
| 28 | 26, 27 | bitr4di 198 |
. . . 4
|
| 29 | 1, 2, 3, 28 | eqrd 3266 |
. . 3
|
| 30 | eqid 2238 |
. . . 4
| |
| 31 | 30 | mptpreima 5276 |
. . 3
|
| 32 | 29, 31 | eqtr4di 2289 |
. 2
|
| 33 | 11 | toptopon 15042 |
. . . . . 6
|
| 34 | 33 | biimpi 120 |
. . . . 5
|
| 35 | 34 | ad2antlr 493 |
. . . 4
|
| 36 | 10 | toptopon 15042 |
. . . . . . 7
|
| 37 | 36 | biimpi 120 |
. . . . . 6
|
| 38 | 37 | ad2antrr 492 |
. . . . 5
|
| 39 | simprr 537 |
. . . . 5
| |
| 40 | 35, 38, 39 | cnmptc 15306 |
. . . 4
|
| 41 | 35 | cnmptid 15305 |
. . . 4
|
| 42 | 35, 40, 41 | cnmpt1t 15309 |
. . 3
|
| 43 | cnima 15244 |
. . 3
| |
| 44 | 42, 6, 43 | syl2anc 415 |
. 2
|
| 45 | 32, 44 | eqeltrd 2315 |
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 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-coll 4241 ax-sep 4244 ax-pow 4306 ax-pr 4341 ax-un 4573 ax-setind 4679 |
| This theorem depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-ral 2533 df-rex 2534 df-reu 2535 df-rab 2537 df-v 2823 df-sbc 3052 df-csb 3148 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-nul 3521 df-pw 3687 df-sn 3711 df-pr 3712 df-op 3714 df-uni 3931 df-iun 4009 df-br 4126 df-opab 4188 df-mpt 4189 df-id 4433 df-xp 4775 df-rel 4776 df-cnv 4777 df-co 4778 df-dm 4779 df-rn 4780 df-res 4781 df-ima 4782 df-iota 5332 df-fun 5374 df-fn 5375 df-f 5376 df-f1 5377 df-fo 5378 df-f1o 5379 df-fv 5380 df-ov 6078 df-oprab 6079 df-mpo 6080 df-1st 6364 df-2nd 6365 df-map 6914 df-topgen 13591 df-top 15022 df-topon 15035 df-bases 15067 df-cn 15212 df-cnp 15213 df-tx 15277 |
| This theorem is referenced by: (None) |
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