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Mirrors > Home > ILE Home > Th. List > ntreq0 | Unicode version |
Description: Two ways to say that a subset has an empty interior. (Contributed by NM, 3-Oct-2007.) (Revised by Jim Kingdon, 11-Mar-2023.) |
Ref | Expression |
---|---|
clscld.1 |
Ref | Expression |
---|---|
ntreq0 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | clscld.1 | . . . 4 | |
2 | 1 | ntrval 12750 | . . 3 |
3 | 2 | eqeq1d 2174 | . 2 |
4 | notm0 3429 | . . . 4 | |
5 | ancom 264 | . . . . . . . . . 10 | |
6 | elin 3305 | . . . . . . . . . . 11 | |
7 | 6 | anbi1i 454 | . . . . . . . . . 10 |
8 | anass 399 | . . . . . . . . . 10 | |
9 | 5, 7, 8 | 3bitri 205 | . . . . . . . . 9 |
10 | 9 | exbii 1593 | . . . . . . . 8 |
11 | eluni 3792 | . . . . . . . 8 | |
12 | df-rex 2450 | . . . . . . . 8 | |
13 | 10, 11, 12 | 3bitr4i 211 | . . . . . . 7 |
14 | 13 | exbii 1593 | . . . . . 6 |
15 | rexcom4 2749 | . . . . . 6 | |
16 | 19.42v 1894 | . . . . . . 7 | |
17 | 16 | rexbii 2473 | . . . . . 6 |
18 | 14, 15, 17 | 3bitr2i 207 | . . . . 5 |
19 | 18 | notbii 658 | . . . 4 |
20 | 4, 19 | bitr3i 185 | . . 3 |
21 | ralinexa 2493 | . . 3 | |
22 | velpw 3566 | . . . . 5 | |
23 | notm0 3429 | . . . . 5 | |
24 | 22, 23 | imbi12i 238 | . . . 4 |
25 | 24 | ralbii 2472 | . . 3 |
26 | 20, 21, 25 | 3bitr2i 207 | . 2 |
27 | 3, 26 | bitrdi 195 | 1 |
Colors of variables: wff set class |
Syntax hints: wn 3 wi 4 wa 103 wb 104 wceq 1343 wex 1480 wcel 2136 wral 2444 wrex 2445 cin 3115 wss 3116 c0 3409 cpw 3559 cuni 3789 cfv 5188 ctop 12635 cnt 12733 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 604 ax-in2 605 ax-io 699 ax-5 1435 ax-7 1436 ax-gen 1437 ax-ie1 1481 ax-ie2 1482 ax-8 1492 ax-10 1493 ax-11 1494 ax-i12 1495 ax-bndl 1497 ax-4 1498 ax-17 1514 ax-i9 1518 ax-ial 1522 ax-i5r 1523 ax-13 2138 ax-14 2139 ax-ext 2147 ax-coll 4097 ax-sep 4100 ax-pow 4153 ax-pr 4187 ax-un 4411 |
This theorem depends on definitions: df-bi 116 df-3an 970 df-tru 1346 df-fal 1349 df-nf 1449 df-sb 1751 df-eu 2017 df-mo 2018 df-clab 2152 df-cleq 2158 df-clel 2161 df-nfc 2297 df-ral 2449 df-rex 2450 df-reu 2451 df-rab 2453 df-v 2728 df-sbc 2952 df-csb 3046 df-dif 3118 df-un 3120 df-in 3122 df-ss 3129 df-nul 3410 df-pw 3561 df-sn 3582 df-pr 3583 df-op 3585 df-uni 3790 df-iun 3868 df-br 3983 df-opab 4044 df-mpt 4045 df-id 4271 df-xp 4610 df-rel 4611 df-cnv 4612 df-co 4613 df-dm 4614 df-rn 4615 df-res 4616 df-ima 4617 df-iota 5153 df-fun 5190 df-fn 5191 df-f 5192 df-f1 5193 df-fo 5194 df-f1o 5195 df-fv 5196 df-top 12636 df-ntr 12736 |
This theorem is referenced by: (None) |
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