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Mirrors > Home > MPE Home > Th. List > sstr | Structured version Visualization version GIF version |
Description: Transitivity of subclasses. 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 3610 | . 2 ⊢ (𝐴 ⊆ 𝐵 → (𝐵 ⊆ 𝐶 → 𝐴 ⊆ 𝐶)) | |
2 | 1 | imp 445 | 1 ⊢ ((𝐴 ⊆ 𝐵 ∧ 𝐵 ⊆ 𝐶) → 𝐴 ⊆ 𝐶) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 384 ⊆ 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: sstrd 3613 sylan9ss 3616 ssdifss 3741 uneqin 3878 ssrnres 5572 relrelss 5659 fco 6058 fssres 6070 ssimaex 6263 dff3 6372 tpostpos2 7373 smores 7449 om00 7655 omeulem2 7663 pmss12g 7884 unblem1 8212 unblem2 8213 unblem3 8214 unblem4 8215 isfinite2 8218 cantnfval2 8566 cantnfle 8568 rankxplim3 8744 alephinit 8918 dfac12lem2 8966 ackbij1lem11 9052 cfeq0 9078 cfsuc 9079 cff1 9080 cflim2 9085 cfss 9087 cfslb2n 9090 cofsmo 9091 cfsmolem 9092 fin23lem34 9168 fin1a2lem13 9234 axdc3lem2 9273 axdclem 9341 pwcfsdom 9405 wunfi 9543 tskxpss 9594 tskcard 9603 suprzcl 11457 uzwo 11751 uzwo2 11752 infssuzle 11771 infssuzcl 11772 supxrbnd 12158 supxrgtmnf 12159 supxrre1 12160 supxrre2 12161 supxrss 12162 infxrss 12169 iccsupr 12266 hashf1lem2 13240 trclun 13755 fsum2d 14502 fsumabs 14533 fsumrlim 14543 fsumo1 14544 fprod2d 14711 rpnnen2lem4 14946 rpnnen2lem7 14949 ramub2 15718 ressinbas 15936 ressress 15938 submre 16265 mrcss 16276 mreacs 16319 drsdirfi 16938 clatglbss 17127 ipopos 17160 cntz2ss 17765 ablfac1eulem 18471 subrgint 18802 tgval 20759 mretopd 20896 ssnei 20914 opnneiss 20922 restdis 20982 restcls 20985 restntr 20986 tgcnp 21057 fbssfi 21641 fgss2 21678 fgcl 21682 supfil 21699 alexsubALTlem3 21853 alexsubALTlem4 21854 cnextcn 21871 ustex3sym 22021 trust 22033 restutop 22041 utop2nei 22054 cfiluweak 22099 blssexps 22231 blssex 22232 mopni3 22299 metss 22313 metcnp3 22345 metust 22363 cfilucfil 22364 psmetutop 22372 tgioo 22599 xrsmopn 22615 fsumcn 22673 cncfmptid 22715 iscmet3lem2 23090 caussi 23095 ovolsslem 23252 ovolsscl 23254 ovolssnul 23255 opnmblALT 23371 itgfsum 23593 limcresi 23649 dvmptfsum 23738 plyss 23955 nbuhgr 26239 chsupunss 28203 shsupunss 28205 spanss 28207 shslubi 28244 shlub 28273 mdsl1i 29180 mdsl2i 29181 cvmdi 29183 mdslmd1lem1 29184 mdslmd1lem2 29185 mdslmd2i 29189 mdslmd4i 29192 atomli 29241 atcvatlem 29244 chirredlem2 29250 chirredi 29253 mdsymlem5 29266 xrge0infss 29525 tpr2rico 29958 sigainb 30199 dya2icoseg2 30340 omssubadd 30362 eulerpartlemn 30443 ballotlem2 30550 cvmlift2lem12 31296 opnbnd 32320 fneint 32343 bj-intss 33053 dissneqlem 33187 fin2so 33396 matunitlindflem1 33405 mblfinlem4 33449 ismblfin 33450 filbcmb 33535 heiborlem10 33619 igenmin 33863 lssatle 34302 paddss1 35103 paddss2 35104 paddss12 35105 paddssw2 35130 pclssN 35180 pclfinN 35186 polsubN 35193 2polvalN 35200 2polssN 35201 3polN 35202 2pmaplubN 35212 pnonsingN 35219 polsubclN 35238 dihord6apre 36545 dochsscl 36657 mapdordlem2 36926 isnacs3 37273 itgoss 37733 sspwimp 39154 sspwimpVD 39155 nsstr 39273 islptre 39851 gsumlsscl 42164 lincellss 42215 ellcoellss 42224 |
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