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| Mirrors > Home > ILE Home > Th. List > ntrss2 | Unicode version | ||
| Description: A subset includes its interior. (Contributed by NM, 3-Oct-2007.) (Revised by Mario Carneiro, 11-Nov-2013.) |
| Ref | Expression |
|---|---|
| clscld.1 |
|
| Ref | Expression |
|---|---|
| ntrss2 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | clscld.1 |
. . 3
| |
| 2 | 1 | ntrval 14833 |
. 2
|
| 3 | inss2 3428 |
. . . 4
| |
| 4 | 3 | unissi 3916 |
. . 3
|
| 5 | unipw 4309 |
. . 3
| |
| 6 | 4, 5 | sseqtri 3261 |
. 2
|
| 7 | 2, 6 | eqsstrdi 3279 |
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-io 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-13 2204 ax-14 2205 ax-ext 2213 ax-coll 4204 ax-sep 4207 ax-pow 4264 ax-pr 4299 ax-un 4530 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-nf 1509 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ral 2515 df-rex 2516 df-reu 2517 df-rab 2519 df-v 2804 df-sbc 3032 df-csb 3128 df-un 3204 df-in 3206 df-ss 3213 df-pw 3654 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-iun 3972 df-br 4089 df-opab 4151 df-mpt 4152 df-id 4390 df-xp 4731 df-rel 4732 df-cnv 4733 df-co 4734 df-dm 4735 df-rn 4736 df-res 4737 df-ima 4738 df-iota 5286 df-fun 5328 df-fn 5329 df-f 5330 df-f1 5331 df-fo 5332 df-f1o 5333 df-fv 5334 df-top 14721 df-ntr 14819 |
| This theorem is referenced by: ntrin 14847 neiint 14868 topssnei 14885 iscnp4 14941 cnntri 14947 cnntr 14948 cnptoprest 14962 dvbss 15408 dvfgg 15411 dvcnp2cntop 15422 dvaddxxbr 15424 dvmulxxbr 15425 |
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