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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 1577 |
. . . 4
| |
| 2 | nfcv 2375 |
. . . 4
| |
| 3 | nfrab1 2714 |
. . . 4
| |
| 4 | txtop 15054 |
. . . . . . . . . . . . 13
| |
| 5 | 4 | adantr 276 |
. . . . . . . . . . . 12
|
| 6 | simprl 531 |
. . . . . . . . . . . 12
| |
| 7 | eqid 2231 |
. . . . . . . . . . . . 13
| |
| 8 | 7 | eltopss 14803 |
. . . . . . . . . . . 12
|
| 9 | 5, 6, 8 | syl2anc 411 |
. . . . . . . . . . 11
|
| 10 | imasnopn.1 |
. . . . . . . . . . . . 13
| |
| 11 | eqid 2231 |
. . . . . . . . . . . . 13
| |
| 12 | 10, 11 | txuni 15057 |
. . . . . . . . . . . 12
|
| 13 | 12 | adantr 276 |
. . . . . . . . . . 11
|
| 14 | 9, 13 | sseqtrrd 3267 |
. . . . . . . . . 10
|
| 15 | imass1 5118 |
. . . . . . . . . 10
| |
| 16 | 14, 15 | syl 14 |
. . . . . . . . 9
|
| 17 | xpimasn 5192 |
. . . . . . . . . 10
| |
| 18 | 17 | ad2antll 491 |
. . . . . . . . 9
|
| 19 | 16, 18 | sseqtrd 3266 |
. . . . . . . 8
|
| 20 | 19 | sseld 3227 |
. . . . . . 7
|
| 21 | 20 | pm4.71rd 394 |
. . . . . 6
|
| 22 | elimasng 5111 |
. . . . . . . . 9
| |
| 23 | 22 | elvd 2808 |
. . . . . . . 8
|
| 24 | 23 | ad2antll 491 |
. . . . . . 7
|
| 25 | 24 | anbi2d 464 |
. . . . . 6
|
| 26 | 21, 25 | bitrd 188 |
. . . . 5
|
| 27 | rabid 2710 |
. . . . 5
| |
| 28 | 26, 27 | bitr4di 198 |
. . . 4
|
| 29 | 1, 2, 3, 28 | eqrd 3246 |
. . 3
|
| 30 | eqid 2231 |
. . . 4
| |
| 31 | 30 | mptpreima 5237 |
. . 3
|
| 32 | 29, 31 | eqtr4di 2282 |
. 2
|
| 33 | 11 | toptopon 14812 |
. . . . . 6
|
| 34 | 33 | biimpi 120 |
. . . . 5
|
| 35 | 34 | ad2antlr 489 |
. . . 4
|
| 36 | 10 | toptopon 14812 |
. . . . . . 7
|
| 37 | 36 | biimpi 120 |
. . . . . 6
|
| 38 | 37 | ad2antrr 488 |
. . . . 5
|
| 39 | simprr 533 |
. . . . 5
| |
| 40 | 35, 38, 39 | cnmptc 15076 |
. . . 4
|
| 41 | 35 | cnmptid 15075 |
. . . 4
|
| 42 | 35, 40, 41 | cnmpt1t 15079 |
. . 3
|
| 43 | cnima 15014 |
. . 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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2204 ax-14 2205 ax-ext 2213 ax-coll 4209 ax-sep 4212 ax-pow 4270 ax-pr 4305 ax-un 4536 ax-setind 4641 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ne 2404 df-ral 2516 df-rex 2517 df-reu 2518 df-rab 2520 df-v 2805 df-sbc 3033 df-csb 3129 df-dif 3203 df-un 3205 df-in 3207 df-ss 3214 df-nul 3497 df-pw 3658 df-sn 3679 df-pr 3680 df-op 3682 df-uni 3899 df-iun 3977 df-br 4094 df-opab 4156 df-mpt 4157 df-id 4396 df-xp 4737 df-rel 4738 df-cnv 4739 df-co 4740 df-dm 4741 df-rn 4742 df-res 4743 df-ima 4744 df-iota 5293 df-fun 5335 df-fn 5336 df-f 5337 df-f1 5338 df-fo 5339 df-f1o 5340 df-fv 5341 df-ov 6031 df-oprab 6032 df-mpo 6033 df-1st 6312 df-2nd 6313 df-map 6862 df-topgen 13406 df-top 14792 df-topon 14805 df-bases 14837 df-cn 14982 df-cnp 14983 df-tx 15047 |
| This theorem is referenced by: (None) |
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