| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > cnvimass | GIF version | ||
| Description: A preimage under any class is included in the domain of the class. (Contributed by FL, 29-Jan-2007.) |
| Ref | Expression |
|---|---|
| cnvimass | ⊢ (◡𝐴 “ 𝐵) ⊆ dom 𝐴 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | imassrn 5103 | . 2 ⊢ (◡𝐴 “ 𝐵) ⊆ ran ◡𝐴 | |
| 2 | dfdm4 4939 | . 2 ⊢ dom 𝐴 = ran ◡𝐴 | |
| 3 | 1, 2 | sseqtrri 3272 | 1 ⊢ (◡𝐴 “ 𝐵) ⊆ dom 𝐴 |
| Colors of variables: wff set class |
| Syntax hints: ⊆ wss 3210 ◡ccnv 4739 dom cdm 4740 ran crn 4741 “ cima 4743 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-14 2206 ax-ext 2214 ax-sep 4221 ax-pow 4279 ax-pr 4314 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-eu 2083 df-mo 2084 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-ral 2525 df-rex 2526 df-v 2814 df-un 3214 df-in 3216 df-ss 3223 df-pw 3667 df-sn 3688 df-pr 3689 df-op 3691 df-br 4103 df-opab 4165 df-xp 4746 df-cnv 4748 df-dm 4750 df-rn 4751 df-res 4752 df-ima 4753 |
| This theorem is referenced by: fvimacnvi 5783 elpreima 5788 fconst4m 5895 fsuppeq 6438 fsuppeqg 6439 pw2f1odclem 7078 nn0supp 9538 fisumss 12056 fprodssdc 12254 1arith 13043 ghmpreima 13957 psrbagfi 14794 cnpnei 15054 cnclima 15058 cnntri 15059 cnntr 15060 cncnp 15065 cnrest2 15071 cndis 15076 txcnmpt 15108 txdis1cn 15113 hmeoimaf1o 15149 xmeter 15271 |
| Copyright terms: Public domain | W3C validator |