Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > sseq1i | Structured version Visualization version GIF version |
Description: An equality inference for the subclass relationship. (Contributed by NM, 18-Aug-1993.) |
Ref | Expression |
---|---|
sseq1i.1 | ⊢ 𝐴 = 𝐵 |
Ref | Expression |
---|---|
sseq1i | ⊢ (𝐴 ⊆ 𝐶 ↔ 𝐵 ⊆ 𝐶) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | sseq1i.1 | . 2 ⊢ 𝐴 = 𝐵 | |
2 | sseq1 3626 | . 2 ⊢ (𝐴 = 𝐵 → (𝐴 ⊆ 𝐶 ↔ 𝐵 ⊆ 𝐶)) | |
3 | 1, 2 | ax-mp 5 | 1 ⊢ (𝐴 ⊆ 𝐶 ↔ 𝐵 ⊆ 𝐶) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 196 = wceq 1483 ⊆ 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-in 3581 df-ss 3588 |
This theorem is referenced by: eqsstri 3635 syl5eqss 3649 ssab 3672 rabss 3679 uniiunlem 3691 prssg 4350 prssOLD 4352 sstp 4367 tpss 4368 iunss 4561 pwtr 4921 iunopeqop 4981 pwssun 5020 cores2 5648 sspred 5688 dffun2 5898 sbcfg 6043 idref 6499 ovmptss 7258 fnsuppres 7322 ordgt0ge1 7577 omopthlem1 7735 trcl 8604 rankbnd 8731 rankbnd2 8732 rankc1 8733 dfac12a 8970 fin23lem34 9168 axdc2lem 9270 alephval2 9394 indpi 9729 fsuppmapnn0fiublem 12789 0ram 15724 mreacs 16319 lsslinds 20170 2ndcctbss 21258 xkoinjcn 21490 restmetu 22375 xrlimcnp 24695 mptelee 25775 ausgrusgrb 26060 nbuhgr2vtx1edgblem 26247 nbgrsym 26265 isuvtxa 26295 2wlkdlem6 26827 frcond1 27130 n4cyclfrgr 27155 shlesb1i 28245 mdsldmd1i 29190 csmdsymi 29193 dfon2lem3 31690 dfon2lem7 31694 trpredmintr 31731 filnetlem4 32376 ptrecube 33409 poimirlem30 33439 idinxpssinxp2 34089 undmrnresiss 37910 clcnvlem 37930 ss2iundf 37951 cnvtrrel 37962 brtrclfv2 38019 rp-imass 38065 dfhe3 38069 dffrege76 38233 iunssf 39263 ssabf 39280 rabssf 39302 imassmpt 39481 setrec2 42442 |
Copyright terms: Public domain | W3C validator |