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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 1574 |
. . . 4
| |
| 2 | nfcv 2372 |
. . . 4
| |
| 3 | nfrab1 2711 |
. . . 4
| |
| 4 | txtop 14949 |
. . . . . . . . . . . . 13
| |
| 5 | 4 | adantr 276 |
. . . . . . . . . . . 12
|
| 6 | simprl 529 |
. . . . . . . . . . . 12
| |
| 7 | eqid 2229 |
. . . . . . . . . . . . 13
| |
| 8 | 7 | eltopss 14698 |
. . . . . . . . . . . 12
|
| 9 | 5, 6, 8 | syl2anc 411 |
. . . . . . . . . . 11
|
| 10 | imasnopn.1 |
. . . . . . . . . . . . 13
| |
| 11 | eqid 2229 |
. . . . . . . . . . . . 13
| |
| 12 | 10, 11 | txuni 14952 |
. . . . . . . . . . . 12
|
| 13 | 12 | adantr 276 |
. . . . . . . . . . 11
|
| 14 | 9, 13 | sseqtrrd 3263 |
. . . . . . . . . 10
|
| 15 | imass1 5103 |
. . . . . . . . . 10
| |
| 16 | 14, 15 | syl 14 |
. . . . . . . . 9
|
| 17 | xpimasn 5177 |
. . . . . . . . . 10
| |
| 18 | 17 | ad2antll 491 |
. . . . . . . . 9
|
| 19 | 16, 18 | sseqtrd 3262 |
. . . . . . . 8
|
| 20 | 19 | sseld 3223 |
. . . . . . 7
|
| 21 | 20 | pm4.71rd 394 |
. . . . . 6
|
| 22 | elimasng 5096 |
. . . . . . . . 9
| |
| 23 | 22 | elvd 2804 |
. . . . . . . 8
|
| 24 | 23 | ad2antll 491 |
. . . . . . 7
|
| 25 | 24 | anbi2d 464 |
. . . . . 6
|
| 26 | 21, 25 | bitrd 188 |
. . . . 5
|
| 27 | rabid 2707 |
. . . . 5
| |
| 28 | 26, 27 | bitr4di 198 |
. . . 4
|
| 29 | 1, 2, 3, 28 | eqrd 3242 |
. . 3
|
| 30 | eqid 2229 |
. . . 4
| |
| 31 | 30 | mptpreima 5222 |
. . 3
|
| 32 | 29, 31 | eqtr4di 2280 |
. 2
|
| 33 | 11 | toptopon 14707 |
. . . . . 6
|
| 34 | 33 | biimpi 120 |
. . . . 5
|
| 35 | 34 | ad2antlr 489 |
. . . 4
|
| 36 | 10 | toptopon 14707 |
. . . . . . 7
|
| 37 | 36 | biimpi 120 |
. . . . . 6
|
| 38 | 37 | ad2antrr 488 |
. . . . 5
|
| 39 | simprr 531 |
. . . . 5
| |
| 40 | 35, 38, 39 | cnmptc 14971 |
. . . 4
|
| 41 | 35 | cnmptid 14970 |
. . . 4
|
| 42 | 35, 40, 41 | cnmpt1t 14974 |
. . 3
|
| 43 | cnima 14909 |
. . 3
| |
| 44 | 42, 6, 43 | syl2anc 411 |
. 2
|
| 45 | 32, 44 | eqeltrd 2306 |
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 617 ax-in2 618 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-13 2202 ax-14 2203 ax-ext 2211 ax-coll 4199 ax-sep 4202 ax-pow 4258 ax-pr 4293 ax-un 4524 ax-setind 4629 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-fal 1401 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ne 2401 df-ral 2513 df-rex 2514 df-reu 2515 df-rab 2517 df-v 2801 df-sbc 3029 df-csb 3125 df-dif 3199 df-un 3201 df-in 3203 df-ss 3210 df-nul 3492 df-pw 3651 df-sn 3672 df-pr 3673 df-op 3675 df-uni 3889 df-iun 3967 df-br 4084 df-opab 4146 df-mpt 4147 df-id 4384 df-xp 4725 df-rel 4726 df-cnv 4727 df-co 4728 df-dm 4729 df-rn 4730 df-res 4731 df-ima 4732 df-iota 5278 df-fun 5320 df-fn 5321 df-f 5322 df-f1 5323 df-fo 5324 df-f1o 5325 df-fv 5326 df-ov 6010 df-oprab 6011 df-mpo 6012 df-1st 6292 df-2nd 6293 df-map 6805 df-topgen 13308 df-top 14687 df-topon 14700 df-bases 14732 df-cn 14877 df-cnp 14878 df-tx 14942 |
| This theorem is referenced by: (None) |
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