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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 15361 |
. . . . . . . . . . . . 13
| |
| 5 | 4 | adantr 276 |
. . . . . . . . . . . 12
|
| 6 | simprl 535 |
. . . . . . . . . . . 12
| |
| 7 | eqid 2238 |
. . . . . . . . . . . . 13
| |
| 8 | 7 | eltopss 15110 |
. . . . . . . . . . . 12
|
| 9 | 5, 6, 8 | syl2anc 415 |
. . . . . . . . . . 11
|
| 10 | imasnopn.1 |
. . . . . . . . . . . . 13
| |
| 11 | eqid 2238 |
. . . . . . . . . . . . 13
| |
| 12 | 10, 11 | txuni 15364 |
. . . . . . . . . . . 12
|
| 13 | 12 | adantr 276 |
. . . . . . . . . . 11
|
| 14 | 9, 13 | sseqtrrd 3287 |
. . . . . . . . . 10
|
| 15 | imass1 5162 |
. . . . . . . . . 10
| |
| 16 | 14, 15 | syl 14 |
. . . . . . . . 9
|
| 17 | xpimasn 5236 |
. . . . . . . . . 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 5155 |
. . . . . . . . 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 5281 |
. . 3
|
| 32 | 29, 31 | eqtr4di 2289 |
. 2
|
| 33 | 11 | toptopon 15119 |
. . . . . 6
|
| 34 | 33 | biimpi 120 |
. . . . 5
|
| 35 | 34 | ad2antlr 493 |
. . . 4
|
| 36 | 10 | toptopon 15119 |
. . . . . . 7
|
| 37 | 36 | biimpi 120 |
. . . . . 6
|
| 38 | 37 | ad2antrr 492 |
. . . . 5
|
| 39 | simprr 537 |
. . . . 5
| |
| 40 | 35, 38, 39 | cnmptc 15383 |
. . . 4
|
| 41 | 35 | cnmptid 15382 |
. . . 4
|
| 42 | 35, 40, 41 | cnmpt1t 15386 |
. . 3
|
| 43 | cnima 15321 |
. . 3
| |
| 44 | 42, 6, 43 | syl2anc 415 |
. 2
|
| 45 | 32, 44 | eqeltrd 2315 |
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-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 4246 ax-sep 4249 ax-pow 4311 ax-pr 4346 ax-un 4578 ax-setind 4684 |
| This proof 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 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-iun 4014 df-br 4131 df-opab 4193 df-mpt 4194 df-id 4438 df-xp 4780 df-rel 4781 df-cnv 4782 df-co 4783 df-dm 4784 df-rn 4785 df-res 4786 df-ima 4787 df-iota 5337 df-fun 5379 df-fn 5380 df-f 5381 df-f1 5382 df-fo 5383 df-f1o 5384 df-fv 5385 df-ov 6088 df-oprab 6089 df-mpo 6090 df-1st 6374 df-2nd 6375 df-map 6924 df-topgen 13614 df-top 15099 df-topon 15112 df-bases 15144 df-cn 15289 df-cnp 15290 df-tx 15354 |
| This theorem is used by: (None) |
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