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Mirrors > Home > ILE Home > Th. List > cnvimarndm | GIF version |
Description: The preimage of the range of a class is the domain of the class. (Contributed by Jeff Hankins, 15-Jul-2009.) |
Ref | Expression |
---|---|
cnvimarndm | ⊢ (◡𝐴 “ ran 𝐴) = dom 𝐴 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | imadmrn 4861 | . 2 ⊢ (◡𝐴 “ dom ◡𝐴) = ran ◡𝐴 | |
2 | df-rn 4520 | . . 3 ⊢ ran 𝐴 = dom ◡𝐴 | |
3 | 2 | imaeq2i 4849 | . 2 ⊢ (◡𝐴 “ ran 𝐴) = (◡𝐴 “ dom ◡𝐴) |
4 | dfdm4 4701 | . 2 ⊢ dom 𝐴 = ran ◡𝐴 | |
5 | 1, 3, 4 | 3eqtr4i 2148 | 1 ⊢ (◡𝐴 “ ran 𝐴) = dom 𝐴 |
Colors of variables: wff set class |
Syntax hints: = wceq 1316 ◡ccnv 4508 dom cdm 4509 ran crn 4510 “ cima 4512 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 683 ax-5 1408 ax-7 1409 ax-gen 1410 ax-ie1 1454 ax-ie2 1455 ax-8 1467 ax-10 1468 ax-11 1469 ax-i12 1470 ax-bndl 1471 ax-4 1472 ax-14 1477 ax-17 1491 ax-i9 1495 ax-ial 1499 ax-i5r 1500 ax-ext 2099 ax-sep 4016 ax-pow 4068 ax-pr 4101 |
This theorem depends on definitions: df-bi 116 df-3an 949 df-tru 1319 df-nf 1422 df-sb 1721 df-eu 1980 df-mo 1981 df-clab 2104 df-cleq 2110 df-clel 2113 df-nfc 2247 df-ral 2398 df-rex 2399 df-v 2662 df-un 3045 df-in 3047 df-ss 3054 df-pw 3482 df-sn 3503 df-pr 3504 df-op 3506 df-br 3900 df-opab 3960 df-xp 4515 df-cnv 4517 df-dm 4519 df-rn 4520 df-res 4521 df-ima 4522 |
This theorem is referenced by: cnrest2 12332 |
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