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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 2204 |
. 2
| |
| 2 | inss1 2226 |
. 2
| |
| 3 | 1, 2 | eqsstr3 2088 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: ssin 2228 ordin 2972 onfr 2981 relin2 3258 relres 3379 intasym 3430 asymref 3431 intirr 3433 ssrnres 3473 cnvcnv 3478 fnresin2 3594 ssimaex 3759 exfo 3813 bnd2 4704 brdom3 4781 brdom5 4782 brdom4 4783 ltrelpi 4997 limsupclt 6470 clm4le 7027 clm4f 7028 clm0 7029 clm4at 7036 climfnn 7038 climconst 7039 2climnn 7047 2climnn0 7048 ser1f0 7114 metres 7775 caussi 7905 bcthlem18 7966 minveceu 8527 occllem6 9117 projlem25 9149 projlem26 9150 chdmm1 9338 chm0 9351 ledi 9397 lejdi 9399 pjoml2 9468 pjoml4 9470 cmcmlem 9474 cmbr4 9484 osumcor 9527 pjssm 9566 mayete3 9613 riesz4t 9935 riesz1t 9936 cnlnadjeut 9949 nmopadjle 9959 pjclem1 10061 pjc 10066 mdbr3 10162 mdbr4 10163 dmdbr2 10168 ssmd2 10176 mdslj1 10183 mdslj2 10184 mdsl1 10185 mdsl2b 10187 mdslmd1lem1 10189 mdslmd1lem2 10190 mdslmd2 10194 csmdsym 10198 cvexchlem 10232 atoml 10246 atcvat4 10261 subsp 10465 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 960 ax-gen 961 ax-8 962 ax-10 964 ax-12 966 ax-17 969 ax-4 971 ax-5o 973 ax-6o 976 ax-9o 1121 ax-10o 1138 ax-16 1208 ax-11o 1216 ax-ext 1457 |
| This theorem depends on definitions: df-bi 147 df-an 225 df-ex 979 df-sb 1170 df-clab 1462 df-cleq 1467 df-clel 1470 df-v 1808 df-in 2047 df-ss 2049 |