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Mirrors > Home > MPE Home > Th. List > ssinss1 | Structured version Visualization version Unicode version |
Description: Intersection preserves subclass relationship. (Contributed by NM, 14-Sep-1999.) |
Ref | Expression |
---|---|
ssinss1 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | inss1 3833 | . 2 | |
2 | sstr2 3610 | . 2 | |
3 | 1, 2 | ax-mp 5 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 cin 3573 wss 3574 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-v 3202 df-in 3581 df-ss 3588 |
This theorem is referenced by: inss 3842 wfrlem4 7418 wfrlem5 7419 fipwuni 8332 ssfin4 9132 distop 20799 fctop 20808 cctop 20810 ntrin 20865 innei 20929 lly1stc 21299 txcnp 21423 isfild 21662 utoptop 22038 restmetu 22375 lecmi 28461 mdslj2i 29179 mdslmd1lem1 29184 mdslmd1lem2 29185 elpwincl1 29357 pnfneige0 29997 inelcarsg 30373 ballotlemfrc 30588 bnj1177 31074 bnj1311 31092 frrlem4 31783 frrlem5 31784 cldbnd 32321 neiin 32327 ontgval 32430 mblfinlem4 33449 pmodlem1 35132 pmodlem2 35133 pmod1i 35134 pmod2iN 35135 pmodl42N 35137 dochdmj1 36679 ssficl 37874 ntrclskb 38367 ntrclsk13 38369 ntrneik3 38394 ntrneik13 38396 ssinss1d 39214 icccncfext 40100 fourierdlem48 40371 fourierdlem49 40372 fourierdlem113 40436 caragendifcl 40728 omelesplit 40732 carageniuncllem2 40736 carageniuncl 40737 |
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