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| Description: The intersection of two classes is a subset of one of them. Part of Exercise 12 of [TakeutiZaring] p. 18. |
| Ref | Expression |
|---|---|
| inss2 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | incom 2211 |
. 2
| |
| 2 | inss1 2233 |
. 2
| |
| 3 | 1, 2 | eqsstr3 2095 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: ssin 2235 ordin 2983 onfr 2992 relin2 3269 relres 3393 intasym 3444 asymref 3445 intirr 3447 ssrnres 3487 cnvcnv 3492 fnresin2 3608 ssimaex 3774 exfo 3828 bnd2 4734 brdom3 4811 brdom5 4812 brdom4 4813 ltrelpi 5029 limsupclt 6531 clm4le 7081 clm4f 7082 clm0 7083 clm4at 7090 climfnn 7092 climconst 7094 2climnn 7102 2climnn0 7103 ser1f0 7170 metres 7820 caussi 7951 bcthlem18 8013 minveceu 8579 occllem6 9173 projlem25 9205 projlem26 9206 chdmm1 9395 chm0 9408 ledi 9454 lejdi 9456 pjoml2 9523 pjoml4 9525 cmcmlem 9529 cmbr4 9539 osumcor 9582 pjssm 9621 mayete3 9668 riesz4t 9992 riesz1t 9993 cnlnadjeut 10006 nmopadjle 10016 pjclem1 10118 pjc 10123 mdbr3 10219 mdbr4 10220 dmdbr2 10225 dmdbr5 10230 ssmd2 10234 mdslj1 10241 mdslj2 10242 mdsl1 10243 mdsl2b 10245 mdslmd1lem1 10247 mdslmd1lem2 10248 mdslmd2 10252 csmdsym 10256 cvexchlem 10290 atoml 10304 atcvat4 10319 subsp 10540 |
| 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-v 1815 df-in 2054 df-ss 2056 |