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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 2208 |
. 2
| |
| 2 | inss1 2230 |
. 2
| |
| 3 | 1, 2 | eqsstr3 2092 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: ssin 2232 ordin 2977 onfr 2986 relin2 3263 relres 3387 intasym 3438 asymref 3439 intirr 3441 ssrnres 3481 cnvcnv 3486 fnresin2 3602 ssimaex 3768 exfo 3822 bnd2 4724 brdom3 4801 brdom5 4802 brdom4 4803 ltrelpi 5017 limsupclt 6530 clm4le 7081 clm4f 7082 clm0 7083 clm4at 7090 climfnn 7092 climconst 7094 2climnn 7102 2climnn0 7103 ser1f0 7170 metres 7823 caussi 7954 bcthlem18 8016 minveceu 8583 occllem6 9178 projlem25 9210 projlem26 9211 chdmm1 9400 chm0 9413 ledi 9459 lejdi 9461 pjoml2 9528 pjoml4 9530 cmcmlem 9534 cmbr4 9544 osumcor 9587 pjssm 9626 mayete3 9673 riesz4t 9997 riesz1t 9998 cnlnadjeut 10011 nmopadjle 10021 pjclem1 10123 pjc 10128 mdbr3 10224 mdbr4 10225 dmdbr2 10230 dmdbr5 10235 ssmd2 10239 mdslj1 10246 mdslj2 10247 mdsl1 10248 mdsl2b 10250 mdslmd1lem1 10252 mdslmd1lem2 10253 mdslmd2 10257 csmdsym 10261 cvexchlem 10295 atoml 10309 atcvat4 10324 subsp 10554 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 962 ax-gen 963 ax-8 964 ax-10 966 ax-12 968 ax-17 971 ax-4 973 ax-5o 975 ax-6o 978 ax-9o 1123 ax-10o 1140 ax-16 1210 ax-11o 1218 ax-ext 1459 |
| This theorem depends on definitions: df-bi 147 df-an 225 df-ex 981 df-sb 1172 df-clab 1464 df-cleq 1469 df-clel 1472 df-v 1812 df-in 2051 df-ss 2053 |