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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 5561 | . 2 ⊢ (𝐴 ↾ 𝐵) = (𝐴 ∩ (𝐵 × V)) | |
2 | inss1 4204 | . 2 ⊢ (𝐴 ∩ (𝐵 × V)) ⊆ 𝐴 | |
3 | 1, 2 | eqsstri 4000 | 1 ⊢ (𝐴 ↾ 𝐵) ⊆ 𝐴 |
Colors of variables: wff setvar class |
Syntax hints: Vcvv 3494 ∩ cin 3934 ⊆ wss 3935 × cxp 5547 ↾ cres 5551 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2157 ax-12 2173 ax-ext 2793 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-tru 1536 df-ex 1777 df-nf 1781 df-sb 2066 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-v 3496 df-in 3942 df-ss 3951 df-res 5561 |
This theorem is referenced by: relssres 5887 resexg 5892 iss 5897 mptss 5904 relresfld 6121 funres 6391 funres11 6425 funcnvres 6426 2elresin 6462 fssres 6538 foimacnv 6626 frxp 7814 fnwelem 7819 tposss 7887 dftpos4 7905 smores 7983 smores2 7985 tfrlem15 8022 finresfin 8738 fidomdm 8795 imafi 8811 marypha1lem 8891 hartogslem1 9000 r0weon 9432 ackbij2lem3 9657 axdc3lem2 9867 dmct 9940 smobeth 10002 wunres 10147 vdwnnlem1 16325 symgsssg 18589 symgfisg 18590 psgnunilem5 18616 odf1o2 18692 gsumzres 19023 gsumzaddlem 19035 gsumzadd 19036 gsum2dlem2 19085 dprdfadd 19136 dprdres 19144 dprd2dlem1 19157 dprd2da 19158 opsrtoslem2 20259 lindfres 20961 txss12 22207 txbasval 22208 fmss 22548 ustneism 22826 trust 22832 isngp2 23200 equivcau 23897 metsscmetcld 23912 volf 24124 dvcnvrelem1 24608 tdeglem4 24648 pserdv 25011 dvlog 25228 dchrelbas2 25807 issubgr2 27048 subgrprop2 27050 uhgrspansubgr 27067 hlimadd 28964 hlimcaui 29007 hhssabloilem 29032 hhsst 29037 hhsssh2 29041 hhsscms 29049 occllem 29074 nlelchi 29832 hmopidmchi 29922 fnresin 30365 imafi2 30441 pfxrn2 30611 omsmon 31551 carsggect 31571 eulerpartlemmf 31628 funpartss 33400 brresi2 34988 bnd2lem 35063 idresssidinxp 35560 disjimres 35974 diophrw 39349 dnnumch2 39638 lmhmlnmsplit 39680 hbtlem6 39722 dfrcl2 40012 relexpaddss 40056 cotrclrcl 40080 frege131d 40102 rnresss 41432 resimass 41503 fourierdlem42 42428 fourierdlem80 42465 setrecsres 44798 |
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