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Mirrors > Home > ILE Home > Th. List > eqssd | Unicode version |
Description: Equality deduction from two subclass relationships. Compare Theorem 4 of [Suppes] p. 22. (Contributed by NM, 27-Jun-2004.) |
Ref | Expression |
---|---|
eqssd.1 | |
eqssd.2 |
Ref | Expression |
---|---|
eqssd |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqssd.1 | . 2 | |
2 | eqssd.2 | . 2 | |
3 | eqss 3107 | . 2 | |
4 | 1, 2, 3 | sylanbrc 413 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wceq 1331 wss 3066 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-11 1484 ax-4 1487 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2119 |
This theorem depends on definitions: df-bi 116 df-nf 1437 df-sb 1736 df-clab 2124 df-cleq 2130 df-clel 2133 df-in 3072 df-ss 3079 |
This theorem is referenced by: eqrd 3110 eqelssd 3111 unissel 3760 intmin 3786 int0el 3796 pwntru 4117 exmidundif 4124 exmidundifim 4125 dmcosseq 4805 relfld 5062 imadif 5198 imain 5200 fimacnv 5542 fo2ndf 6117 tposeq 6137 tfrlemibfn 6218 tfrlemi14d 6223 tfr1onlembfn 6234 tfri1dALT 6241 tfrcllembfn 6247 dcdifsnid 6393 fisbth 6770 en2eqpr 6794 exmidpw 6795 undifdcss 6804 en2other2 7045 addnqpr 7362 mulnqpr 7378 distrprg 7389 ltexpri 7414 addcanprg 7417 recexprlemex 7438 aptipr 7442 cauappcvgprlemladd 7459 fzopth 9834 fzosplit 9947 fzouzsplit 9949 frecuzrdgtcl 10178 frecuzrdgdomlem 10183 phimullem 11890 structcnvcnv 11964 eltg4i 12213 unitg 12220 tgtop 12226 tgidm 12232 basgen 12238 2basgeng 12240 epttop 12248 ntrin 12282 isopn3 12283 neiuni 12319 tgrest 12327 resttopon 12329 rest0 12337 txdis 12435 hmeontr 12471 xmettx 12668 findset 13132 pwtrufal 13181 pwf1oexmid 13183 |
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