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| Mirrors > Home > MPE Home > Th. List > resdm | Structured version Visualization version GIF version | ||
| Description: A relation restricted to its domain equals itself. (Contributed by NM, 12-Dec-2006.) |
| Ref | Expression |
|---|---|
| resdm | ⊢ (Rel 𝐴 → (𝐴 ↾ dom 𝐴) = 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ssid 3939 | . 2 ⊢ dom 𝐴 ⊆ dom 𝐴 | |
| 2 | relssres 5981 | . 2 ⊢ ((Rel 𝐴 ∧ dom 𝐴 ⊆ dom 𝐴) → (𝐴 ↾ dom 𝐴) = 𝐴) | |
| 3 | 1, 2 | mpan2 698 | 1 ⊢ (Rel 𝐴 → (𝐴 ↾ dom 𝐴) = 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1548 ⊆ wss 3885 dom cdm 5621 ↾ cres 5623 Rel wrel 5626 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1975 ax-7 2016 ax-8 2123 ax-9 2131 ax-ext 2713 ax-sep 5221 ax-pr 5365 |
| This theorem depends on definitions: df-bi 209 df-an 398 df-or 855 df-3an 1095 df-tru 1551 df-fal 1561 df-ex 1788 df-sb 2075 df-clab 2720 df-cleq 2733 df-clel 2816 df-ral 3056 df-rex 3066 df-rab 3394 df-v 3435 df-dif 3888 df-un 3890 df-in 3892 df-ss 3902 df-nul 4265 df-if 4458 df-sn 4559 df-pr 4561 df-op 4565 df-br 5076 df-opab 5138 df-xp 5627 df-rel 5628 df-dm 5631 df-res 5633 |
| This theorem is referenced by: resindm 5989 reldisjun 5991 relresdm1 5992 imadifssran 6106 resdm2 6186 relresfld 6231 fimadmfoALT 6754 fnex 7165 dftpos2 8187 tfrlem11 8321 tfrlem15 8325 tfrlem16 8326 pmresg 8812 domss2 9068 axdc3lem4 10370 gruima 10720 nosupbnd2lem1 27701 nosupbnd2 27702 noinfbnd2lem1 27716 noinfbnd2 27717 noetasuplem2 27720 noetasuplem3 27721 noetasuplem4 27722 noetainflem2 27724 bnj1321 35224 funsseq 36011 alrmomodm 38741 relbrcoss 38918 unidmqs 39121 releldmqs 39125 releldmqscoss 39127 seff 44768 sblpnf 44769 f1cof1blem 47551 funfocofob 47555 itcoval1 49168 |
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