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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 5637 | . 2 ⊢ (𝐴 ↾ 𝐵) = (𝐴 ∩ (𝐵 × V)) | |
| 2 | inss1 4178 | . 2 ⊢ (𝐴 ∩ (𝐵 × V)) ⊆ 𝐴 | |
| 3 | 1, 2 | eqsstri 3969 | 1 ⊢ (𝐴 ↾ 𝐵) ⊆ 𝐴 |
| Colors of variables: wff setvar class |
| Syntax hints: Vcvv 3430 ∩ cin 3889 ⊆ wss 3890 × cxp 5623 ↾ cres 5627 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2709 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-tru 1545 df-ex 1782 df-sb 2069 df-clab 2716 df-cleq 2729 df-clel 2812 df-v 3432 df-in 3897 df-ss 3907 df-res 5637 |
| This theorem is referenced by: dmresss 5971 rnresss 5977 relssres 5982 resexg 5987 iss 5995 mptss 6002 relresfld 6235 funres 6535 funres11 6570 funcnvres 6571 2elresin 6614 fssres 6701 foimacnv 6792 frxp 8070 fnwelem 8075 tposss 8171 dftpos4 8189 smores 8286 smores2 8288 tfrlem15 8325 finresfin 9176 imafi 9219 fidomdm 9238 imafi2 9265 marypha1lem 9340 hartogslem1 9451 r0weon 9928 ackbij2lem3 10156 axdc3lem2 10367 dmct 10440 smobeth 10503 wunres 10648 vdwnnlem1 16960 symgsssg 19436 symgfisg 19437 psgnunilem5 19463 odf1o2 19542 gsumzres 19878 gsumzaddlem 19890 gsumzadd 19891 gsum2dlem2 19940 dprdfadd 19991 dprdres 19999 dprd2dlem1 20012 dprd2da 20013 lindfres 21816 opsrtoslem2 22047 txss12 23583 txbasval 23584 fmss 23924 ustneism 24202 trust 24207 isngp2 24575 equivcau 25280 metsscmetcld 25295 volf 25509 dvcnvrelem1 25997 pserdv 26410 dvlog 26631 dchrelbas2 27217 issubgr2 29358 subgrprop2 29360 uhgrspansubgr 29377 hlimadd 31282 hlimcaui 31325 hhssabloilem 31350 hhsst 31355 hhsssh2 31359 hhsscms 31367 occllem 31392 nlelchi 32150 hmopidmchi 32240 fnresin 32715 fressupp 32779 pfxrn2 33018 omsmon 34461 carsggect 34481 eulerpartlemmf 34538 funpartss 36145 brresi2 38058 bnd2lem 38129 idresssidinxp 38652 disjimres 39188 aks6d1c2 42586 eqresfnbd 42690 diophrw 43208 dnnumch2 43494 lmhmlnmsplit 43536 hbtlem6 43578 dfrcl2 44122 relexpaddss 44166 cotrclrcl 44190 frege131d 44212 resimass 45690 fourierdlem42 46598 fourierdlem80 46635 isubgredgss 48356 isubgrsubgr 48360 setrecsres 50192 |
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