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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 3945 | . 2 ⊢ dom 𝐴 ⊆ dom 𝐴 | |
| 2 | relssres 5981 | . 2 ⊢ ((Rel 𝐴 ∧ dom 𝐴 ⊆ dom 𝐴) → (𝐴 ↾ dom 𝐴) = 𝐴) | |
| 3 | 1, 2 | mpan2 692 | 1 ⊢ (Rel 𝐴 → (𝐴 ↾ dom 𝐴) = 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 ⊆ wss 3890 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 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2709 ax-sep 5231 ax-pr 5370 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-sb 2069 df-clab 2716 df-cleq 2729 df-clel 2812 df-ral 3053 df-rex 3063 df-rab 3391 df-v 3432 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4275 df-if 4468 df-sn 4569 df-pr 4571 df-op 4575 df-br 5087 df-opab 5149 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 7165 dftpos2 8186 tfrlem11 8320 tfrlem15 8324 tfrlem16 8325 pmresg 8811 domss2 9067 axdc3lem4 10366 gruima 10716 nosupbnd2lem1 27693 nosupbnd2 27694 noinfbnd2lem1 27708 noinfbnd2 27709 noetasuplem2 27712 noetasuplem3 27713 noetasuplem4 27714 noetainflem2 27716 bnj1321 35185 funsseq 35966 alrmomodm 38694 relbrcoss 38871 unidmqs 39074 releldmqs 39078 releldmqscoss 39080 seff 44754 sblpnf 44755 f1cof1blem 47534 funfocofob 47538 itcoval1 49151 |
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