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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 3967 | . 2 ⊢ dom 𝐴 ⊆ dom 𝐴 | |
| 2 | relssres 6019 | . 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 1567 ⊆ wss 3913 dom cdm 5659 ↾ cres 5661 Rel wrel 5664 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-ext 2741 ax-sep 5258 ax-pr 5402 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-sb 2098 df-clab 2748 df-cleq 2761 df-clel 2844 df-ral 3086 df-rex 3096 df-rab 3424 df-v 3465 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-nul 4295 df-if 4490 df-sn 4592 df-pr 4594 df-op 4598 df-br 5111 df-opab 5175 df-xp 5665 df-rel 5666 df-dm 5669 df-res 5671 |
| This theorem is referenced by: resindm 6027 resindmOLD 6028 reldmun 6031 reldisjunOLD 6032 relresdm1 6033 imadifssranOLD 6201 resdm2 6230 relresfld 6275 fimadmfoALT 6801 fnex 7213 dftpos2 8235 tfrlem11 8371 tfrlem15 8375 tfrlem16 8376 pmresg 8864 domss2 9120 axdc3lem4 10433 gruima 10783 nosupbnd2lem1 27841 nosupbnd2 27842 noinfbnd2lem1 27856 noinfbnd2 27857 noetasuplem2 27860 noetasuplem3 27861 noetasuplem4 27862 noetainflem2 27864 bnj1321 35356 funsseq 36155 alrmomodm 38893 relbrcoss 39070 unidmqs 39273 releldmqs 39277 releldmqscoss 39279 seff 44906 sblpnf 44907 f1cof1blem 47695 funfocofob 47699 itcoval1 49323 |
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