| Metamath Proof Explorer |
< Previous
Next >
Related theorems GIF version |
| Description: Inference rule based on subclass definition. |
| Ref | Expression |
|---|---|
| ssriv.1 | ⊢ (x ∈ A → x ∈ B) |
| Ref | Expression |
|---|---|
| ssriv | ⊢ A ⊆ B |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dfss2 2061 | . 2 ⊢ (A ⊆ B ↔ ∀x(x ∈ A → x ∈ B)) | |
| 2 | ssriv.1 | . 2 ⊢ (x ∈ A → x ∈ B) | |
| 3 | 1, 2 | mpgbir 990 | 1 ⊢ A ⊆ B |
| Colors of variables: wff set class |
| Syntax hints: → wi 3 ∈ wcel 960 ⊆ wss 2050 |
| This theorem is referenced by: ssv 2084 difss 2170 ssun1 2196 inss1 2233 0ss 2305 difprsn 2469 snsspw 2483 uniin 2524 iuniin 2577 iunpwss 2623 unipw 2762 pwuni 2763 pwunss 2832 omsson 3142 omssnlim 3151 xpss 3236 dmin 3324 dmrnssfld 3363 dminss 3468 imainss 3469 mapsspm 4345 uniixp 4363 ixpssmap 4369 pwfilem 4577 pwfilemOLD 4578 dfom3 4639 tz9.12lem1 4669 rankun 4701 alephsson 4905 cardcf 4923 cfeq0 4926 1pr 5129 reclem2pr 5169 zssre 6144 zsscn 6145 nnssz 6153 zssq 6262 qssre 6265 rpssre 6286 ioossre 6390 ioossicc 6398 fzssuzt 6506 reeff1olem1 7424 reeff1o 7426 ntrss2 7687 qdensere 7748 blssioo 7910 tgioo 7912 sspval 8378 phrel 8470 bnrel 8523 ubthlem6 8530 hlrel 8590 pilem2 8667 efifolem4 8720 eff1i 8739 effoi 8740 resslogrn 8748 chsscm 9107 chcmh 9108 hhssnv 9129 omlsi 9240 choc1 9286 shunss 9332 shslej 9333 shsub1 9336 shsub2 9337 shsidm 9352 spanun 9462 spansn 9475 5oalem7 9600 3oalem3 9604 mayete3 9668 hmopex 9797 cnlnssadj 10008 adjbdlnt 10011 adjsslnop 10015 shatomistic 10283 hatomistic 10284 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 964 ax-gen 965 ax-8 966 ax-10 968 ax-12 970 ax-17 973 ax-4 975 ax-5o 977 ax-6o 980 ax-9o 1125 ax-10o 1142 ax-16 1212 ax-11o 1220 ax-ext 1462 |
| This theorem depends on definitions: df-bi 147 df-an 225 df-ex 983 df-sb 1174 df-clab 1467 df-cleq 1472 df-clel 1475 df-in 2054 df-ss 2056 |