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| Description: Equality theorem for the subclass relationship. |
| Ref | Expression |
|---|---|
| sseq2 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sstr2 2071 |
. . . 4
| |
| 2 | 1 | com12 11 |
. . 3
|
| 3 | sstr2 2071 |
. . . 4
| |
| 4 | 3 | com12 11 |
. . 3
|
| 5 | 2, 4 | anim12i 333 |
. 2
|
| 6 | eqss 2077 |
. 2
| |
| 7 | dfbi2 514 |
. 2
| |
| 8 | 5, 6, 7 | 3imtr4 219 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: sseq12 2084 sseq2i 2086 sseq2d 2089 eqimss 2109 psseq2 2136 sseq0 2304 un00 2306 disjpss 2319 pweq 2403 ssuni 2522 ssintab 2550 ssintub 2551 intmin 2553 treq 2686 ssexg 2721 intabs 2733 iunpw 2914 ordunidif 3005 ordssun 3079 limomss 3137 findsg 3157 tfindsg 3162 unixp0 3518 fununi 3563 funcnvuni 3564 feq3 3622 feq23 3623 ssimaexg 3769 oawordeu 4189 oawordexr 4190 ereq 4267 domeng 4380 undom 4438 sbthlem4 4450 sbthlem5 4451 mapdom2lem 4493 php3 4515 php3OLD 4516 abfii4OLD 4564 inf3lema 4609 tz9.1 4646 scottex 4716 aceq3 4733 ac7g 4749 cardlim 4851 isinfcard 4887 alephval3 4903 cflem 4905 cfval 4906 cflecard 4912 cfsuc 4915 infxpidmlem7 7558 infxpidmlem11 7562 istopg 7596 basis2t 7615 eltg2t 7619 tgss2t 7637 basgen2t 7639 bastop 7642 ntrval 7676 clsval 7677 clscld 7683 clsval2 7685 ntrcls0 7707 isnei 7718 neiint 7719 neips 7727 opnneissb 7728 opnssneib 7729 innei 7736 islp2 7747 cnpimaex 7765 isopn 7859 metcnp 7887 tgioo 7915 resgrprn 8095 issubg 8116 avril1 8784 omls 9246 pjomlt 9269 ococint 9297 spanvalt 9299 hsupval2t 9300 spanclt 9304 chsupsn 9312 shlubt 9354 shsumval2 9360 shs00 9373 chj00 9410 chsscon3t 9423 chlejb1t 9435 chnlet 9437 pjoml2t 9554 pjoml3t 9555 lecmt 9560 stcltr1 10201 mdbrt 10221 dmdmdt 10227 dmdit 10229 dmdbr3 10232 dmdbr4 10233 mdsl1 10248 mdslmd1lem3 10254 mdslmd1lem4 10255 csmdsym 10261 hatomict 10287 chrelat2t 10297 atordt 10315 atcvat4 10324 fiv 10482 fivOLD 10483 iseuctopg 10502 mapdiscn 10511 isfil 10558 fillsb 10560 neifil 10568 fgsb 10570 fgsbOLD 10571 efilcp 10572 efilcpOLD 10573 fgsb2 10580 efilcp2 10581 efilcp2OLD 10582 limfillem1OLD 10607 isalg 10653 algi 10660 |
| 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 |