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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 3956 | . 2 ⊢ dom 𝐴 ⊆ dom 𝐴 | |
| 2 | relssres 5981 | . 2 ⊢ ((Rel 𝐴 ∧ dom 𝐴 ⊆ dom 𝐴) → (𝐴 ↾ dom 𝐴) = 𝐴) | |
| 3 | 1, 2 | mpan2 691 | 1 ⊢ (Rel 𝐴 → (𝐴 ↾ dom 𝐴) = 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1541 ⊆ wss 3901 dom cdm 5624 ↾ cres 5626 Rel wrel 5629 |
| 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 2708 ax-sep 5241 ax-nul 5251 ax-pr 5377 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-sb 2068 df-clab 2715 df-cleq 2728 df-clel 2811 df-ral 3052 df-rex 3061 df-rab 3400 df-v 3442 df-dif 3904 df-un 3906 df-in 3908 df-ss 3918 df-nul 4286 df-if 4480 df-sn 4581 df-pr 4583 df-op 4587 df-br 5099 df-opab 5161 df-xp 5630 df-rel 5631 df-dm 5634 df-res 5636 |
| This theorem is referenced by: resindm 5989 reldisjun 5991 relresdm1 5992 imadifssran 6109 resdm2 6189 relresfld 6234 fimadmfoALT 6757 fnex 7163 dftpos2 8185 tfrlem11 8319 tfrlem15 8323 tfrlem16 8324 pmresg 8808 domss2 9064 axdc3lem4 10363 gruima 10713 nosupbnd2lem1 27683 nosupbnd2 27684 noinfbnd2lem1 27698 noinfbnd2 27699 noetasuplem2 27702 noetasuplem3 27703 noetasuplem4 27704 noetainflem2 27706 bnj1321 35183 funsseq 35962 alrmomodm 38552 relbrcoss 38709 unidmqs 38913 releldmqs 38917 releldmqscoss 38919 seff 44550 sblpnf 44551 f1cof1blem 47320 funfocofob 47324 itcoval1 48909 |
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