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Mirrors > Home > MPE Home > Th. List > sstr | Structured version Visualization version GIF version |
Description: Transitivity of subclass relationship. Theorem 6 of [Suppes] p. 23. (Contributed by NM, 5-Sep-2003.) |
Ref | Expression |
---|---|
sstr | ⊢ ((𝐴 ⊆ 𝐵 ∧ 𝐵 ⊆ 𝐶) → 𝐴 ⊆ 𝐶) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | sstr2 3976 | . 2 ⊢ (𝐴 ⊆ 𝐵 → (𝐵 ⊆ 𝐶 → 𝐴 ⊆ 𝐶)) | |
2 | 1 | imp 409 | 1 ⊢ ((𝐴 ⊆ 𝐵 ∧ 𝐵 ⊆ 𝐶) → 𝐴 ⊆ 𝐶) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 398 ⊆ wss 3938 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2795 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-clab 2802 df-cleq 2816 df-clel 2895 df-in 3945 df-ss 3954 |
This theorem is referenced by: sstrd 3979 sylan9ss 3982 ssdifss 4114 uneqin 4257 ssrnres 6037 relrelss 6126 fco 6533 fssres 6546 ssimaex 6750 dff3 6868 tpostpos2 7915 smores 7991 om00 8203 omeulem2 8211 pmss12g 8435 unblem1 8772 unblem2 8773 unblem3 8774 unblem4 8775 isfinite2 8778 cantnfval2 9134 cantnfle 9136 rankxplim3 9312 alephinit 9523 dfac12lem2 9572 ackbij1lem11 9654 cfeq0 9680 cfsuc 9681 cff1 9682 cflim2 9687 cfss 9689 cfslb2n 9692 cofsmo 9693 cfsmolem 9694 fin23lem34 9770 fin1a2lem13 9836 axdc3lem2 9875 axdclem 9943 pwcfsdom 10007 wunfi 10145 tskxpss 10196 tskcard 10205 suprzcl 12065 uzwo 12314 uzwo2 12315 infssuzle 12334 infssuzcl 12335 supxrbnd 12724 supxrgtmnf 12725 supxrre1 12726 supxrre2 12727 supxrss 12728 infxrss 12735 iccsupr 12833 hashf1lem2 13817 trclun 14376 fsum2d 15128 fsumabs 15158 fsumrlim 15168 fsumo1 15169 fprod2d 15337 rpnnen2lem4 15572 rpnnen2lem7 15575 ramub2 16352 ressinbas 16562 ressress 16564 submre 16878 mrcss 16889 mreacs 16931 drsdirfi 17550 clatglbss 17739 ipopos 17772 cntz2ss 18465 pgrpsubgsymg 18539 ablfac1eulem 19196 subrgint 19559 tgval 21565 mretopd 21702 ssnei 21720 opnneiss 21728 restdis 21788 restcls 21791 restntr 21792 tgcnp 21863 fbssfi 22447 fgss2 22484 fgcl 22488 supfil 22505 alexsubALTlem3 22659 alexsubALTlem4 22660 cnextcn 22677 ustex3sym 22828 trust 22840 restutop 22848 utop2nei 22861 cfiluweak 22906 blssexps 23038 blssex 23039 mopni3 23106 metss 23120 metcnp3 23152 metust 23170 cfilucfil 23171 psmetutop 23179 tgioo 23406 xrsmopn 23422 fsumcn 23480 cncfmptid 23522 iscmet3lem2 23897 caussi 23902 ovolsslem 24087 ovolsscl 24089 ovolssnul 24090 opnmblALT 24206 itgfsum 24429 limcresi 24485 dvmptfsum 24574 plyss 24791 nbuhgr 27127 chsupunss 29123 shsupunss 29125 spanss 29127 shslubi 29164 shlub 29193 mdsl1i 30100 mdsl2i 30101 cvmdi 30103 mdslmd1lem1 30104 mdslmd1lem2 30105 mdslmd2i 30109 mdslmd4i 30112 atomli 30161 atcvatlem 30164 chirredlem2 30170 chirredi 30173 mdsymlem5 30186 xrge0infss 30486 tpr2rico 31157 sigainb 31397 dya2icoseg2 31538 omssubadd 31560 eulerpartlemn 31641 ballotlem2 31748 cvmlift2lem12 32563 opnbnd 33675 fneint 33698 bj-intss 34393 dissneqlem 34623 inunissunidif 34658 pibt2 34700 fin2so 34881 matunitlindflem1 34890 mblfinlem4 34934 ismblfin 34935 filbcmb 35017 heiborlem10 35100 igenmin 35344 lssatle 36153 paddss1 36955 paddss2 36956 paddss12 36957 paddssw2 36982 pclssN 37032 pclfinN 37038 polsubN 37045 2polvalN 37052 2polssN 37053 3polN 37054 2pmaplubN 37064 pnonsingN 37071 polsubclN 37090 dihord6apre 38394 dochsscl 38506 mapdordlem2 38775 isnacs3 39314 itgoss 39770 sspwimp 41259 sspwimpVD 41260 nsstr 41368 islptre 41907 gsumlsscl 44438 lincellss 44488 ellcoellss 44497 |
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