| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 3958 | . 2 ⊢ dom 𝐴 ⊆ dom 𝐴 | |
| 2 | relssres 5989 | . 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 3903 dom cdm 5632 ↾ cres 5634 Rel wrel 5637 |
| 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 5243 ax-pr 5379 |
| 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 3402 df-v 3444 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-nul 4288 df-if 4482 df-sn 4583 df-pr 4585 df-op 4589 df-br 5101 df-opab 5163 df-xp 5638 df-rel 5639 df-dm 5642 df-res 5644 |
| This theorem is referenced by: resindm 5997 reldisjun 5999 relresdm1 6000 imadifssran 6117 resdm2 6197 relresfld 6242 fimadmfoALT 6765 fnex 7173 dftpos2 8195 tfrlem11 8329 tfrlem15 8333 tfrlem16 8334 pmresg 8820 domss2 9076 axdc3lem4 10375 gruima 10725 nosupbnd2lem1 27695 nosupbnd2 27696 noinfbnd2lem1 27710 noinfbnd2 27711 noetasuplem2 27714 noetasuplem3 27715 noetasuplem4 27716 noetainflem2 27718 bnj1321 35203 funsseq 35984 alrmomodm 38610 relbrcoss 38787 unidmqs 38990 releldmqs 38994 releldmqscoss 38996 seff 44665 sblpnf 44666 f1cof1blem 47434 funfocofob 47438 itcoval1 49023 |
| Copyright terms: Public domain | W3C validator |