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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 3959 | . 2 ⊢ dom 𝐴 ⊆ dom 𝐴 | |
| 2 | relssres 6021 | . 2 ⊢ ((Rel 𝐴 ∧ dom 𝐴 ⊆ dom 𝐴) → (𝐴 ↾ dom 𝐴) = 𝐴) | |
| 3 | 1, 2 | mpan2 703 | 1 ⊢ (Rel 𝐴 → (𝐴 ↾ dom 𝐴) = 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1570 ⊆ wss 3905 dom cdm 5661 ↾ cres 5663 Rel wrel 5666 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-ext 2735 ax-sep 5257 ax-pr 5404 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-sb 2097 df-clab 2742 df-cleq 2755 df-clel 2838 df-ral 3080 df-rex 3090 df-rab 3417 df-v 3457 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-nul 4287 df-if 4488 df-sn 4590 df-pr 4592 df-op 4596 df-br 5110 df-opab 5174 df-xp 5667 df-rel 5668 df-dm 5671 df-res 5673 |
| This theorem is referenced by: resindm 6029 resindmOLD 6030 reldmun 6033 reldisjunOLD 6034 relresdm1 6035 imadifssranOLD 6203 resdm2 6232 relresfld 6277 fimadmfoALT 6803 fnex 7215 dftpos2 8235 tfrlem11 8371 tfrlem15 8375 tfrlem16 8376 pmresg 8864 domss2 9120 axdc3lem4 10432 gruima 10782 nosupbnd2lem1 27879 nosupbnd2 27880 noinfbnd2lem1 27894 noinfbnd2 27895 noetasuplem2 27898 noetasuplem3 27899 noetasuplem4 27900 noetainflem2 27902 bnj1321 35415 funsseq 36260 alrmomodm 39008 relbrcoss 39185 unidmqs 39388 releldmqs 39392 releldmqscoss 39394 seff 45019 sblpnf 45020 f1cof1blem 47811 funfocofob 47815 itcoval1 49443 |
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