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| Description: Deduction rule based on subclass definition. |
| Ref | Expression |
|---|---|
| ssrdv.1 |
|
| Ref | Expression |
|---|---|
| ssrdv |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ssrdv.1 |
. . 3
| |
| 2 | 1 | 19.21aiv 1286 |
. 2
|
| 3 | dfss2 2058 |
. 2
| |
| 4 | 2, 3 | sylibr 200 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: sscon 2171 ssdif 2172 difsn 2464 prss 2471 tpss 2476 intss1 2548 intmin 2553 intssuni 2555 ss2iun 2577 ssiun2 2593 sspwb 2755 pwssun 2827 tz7.7 2973 ordon 2987 ssorduni 2993 onint 3006 limsssuc 3121 limuni3 3123 limomss 3137 relop 3275 dmss 3310 ssrnres 3481 chfnrn 3802 dff2 3817 tz7.48-1 3956 tz7.49 3959 oaass 4195 ss2ixp 4354 mapenlem2 4490 pssnn 4534 inf3lemd 4612 inf3lem1 4613 inf3lem6 4618 r1tr 4654 zorn2lem4 4791 zorn2lem5 4792 unxpdomlem 4843 carduni 4858 genpss 5107 distrlem1pr 5127 distrlem5pr 5131 ltexprlem2 5143 ltexprlem6 5147 ltexprlem7 5148 reclem3pr 5158 reclem4pr 5159 suppsrlem 5221 suprelem 5259 iccssret 6396 uzss 6431 infxpidmlem7 7558 infxpidmlem8 7559 bastgt 7622 tgtopt 7628 tgsst 7636 tgss2t 7637 basgen2t 7639 clslp 7748 cnsscnp 7772 cncnplem2 7775 ssbl 7855 blssopn 7867 unirnbl 7875 metcnss 7898 cmsss 7997 grplactf1o 8098 ubthlem2 8530 psdmrn 8648 ococss 9166 shsub1t 9288 shless 9347 shmods 9362 spansnsst 9494 spanpr 9503 spansnm0 9595 pjjs 9645 sumdmdi 10342 sumdmdlem 10345 sumdmdlem2 10346 cdj3lem1 10361 uninqs 10441 clsrebb 10493 rdmob 10681 rcmob 10682 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 962 ax-gen 963 ax-8 964 ax-10 966 ax-12 968 ax-17 971 ax-4 973 ax-5o 975 ax-6o 978 ax-9o 1123 ax-10o 1140 ax-16 1210 ax-11o 1218 ax-ext 1459 |
| This theorem depends on definitions: df-bi 147 df-an 225 df-ex 981 df-sb 1172 df-clab 1464 df-cleq 1469 df-clel 1472 df-in 2051 df-ss 2053 |