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| Mirrors > Home > MPE Home > Th. List > resss | Structured version Visualization version GIF version | ||
| Description: A class includes its restriction. Exercise 15 of [TakeutiZaring] p. 25. (Contributed by NM, 2-Aug-1994.) |
| Ref | Expression |
|---|---|
| resss | ⊢ (𝐴 ↾ 𝐵) ⊆ 𝐴 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-res 5634 | . 2 ⊢ (𝐴 ↾ 𝐵) = (𝐴 ∩ (𝐵 × V)) | |
| 2 | inss1 4187 | . 2 ⊢ (𝐴 ∩ (𝐵 × V)) ⊆ 𝐴 | |
| 3 | 1, 2 | eqsstri 3978 | 1 ⊢ (𝐴 ↾ 𝐵) ⊆ 𝐴 |
| Colors of variables: wff setvar class |
| Syntax hints: Vcvv 3438 ∩ cin 3898 ⊆ wss 3899 × cxp 5620 ↾ cres 5624 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-ext 2706 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-tru 1544 df-ex 1781 df-sb 2068 df-clab 2713 df-cleq 2726 df-clel 2809 df-v 3440 df-in 3906 df-ss 3916 df-res 5634 |
| This theorem is referenced by: dmresss 5968 rnresss 5974 relssres 5979 resexg 5984 iss 5992 mptss 5999 relresfld 6232 funres 6532 funres11 6567 funcnvres 6568 2elresin 6611 fssres 6698 foimacnv 6789 frxp 8066 fnwelem 8071 tposss 8167 dftpos4 8185 smores 8282 smores2 8284 tfrlem15 8321 finresfin 9170 imafi 9213 fidomdm 9232 imafi2 9259 marypha1lem 9334 hartogslem1 9445 r0weon 9920 ackbij2lem3 10148 axdc3lem2 10359 dmct 10432 smobeth 10495 wunres 10640 vdwnnlem1 16921 symgsssg 19394 symgfisg 19395 psgnunilem5 19421 odf1o2 19500 gsumzres 19836 gsumzaddlem 19848 gsumzadd 19849 gsum2dlem2 19898 dprdfadd 19949 dprdres 19957 dprd2dlem1 19970 dprd2da 19971 lindfres 21776 opsrtoslem2 22009 txss12 23547 txbasval 23548 fmss 23888 ustneism 24166 trust 24171 isngp2 24539 equivcau 25254 metsscmetcld 25269 volf 25484 dvcnvrelem1 25976 pserdv 26393 dvlog 26614 dchrelbas2 27202 issubgr2 29294 subgrprop2 29296 uhgrspansubgr 29313 hlimadd 31217 hlimcaui 31260 hhssabloilem 31285 hhsst 31290 hhsssh2 31294 hhsscms 31302 occllem 31327 nlelchi 32085 hmopidmchi 32175 fnresin 32651 fressupp 32716 pfxrn2 32971 omsmon 34404 carsggect 34424 eulerpartlemmf 34481 funpartss 36087 brresi2 37860 bnd2lem 37931 idresssidinxp 38446 disjimres 38948 aks6d1c2 42323 eqresfnbd 42430 diophrw 42943 dnnumch2 43229 lmhmlnmsplit 43271 hbtlem6 43313 dfrcl2 43857 relexpaddss 43901 cotrclrcl 43925 frege131d 43947 resimass 45426 fourierdlem42 46335 fourierdlem80 46372 isubgredgss 48053 isubgrsubgr 48057 setrecsres 49889 |
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