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Mirrors > Home > ILE Home > Th. List > rnss | GIF version |
Description: Subset theorem for range. (Contributed by NM, 22-Mar-1998.) |
Ref | Expression |
---|---|
rnss | ⊢ (𝐴 ⊆ 𝐵 → ran 𝐴 ⊆ ran 𝐵) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cnvss 4557 | . . 3 ⊢ (𝐴 ⊆ 𝐵 → ◡𝐴 ⊆ ◡𝐵) | |
2 | dmss 4583 | . . 3 ⊢ (◡𝐴 ⊆ ◡𝐵 → dom ◡𝐴 ⊆ dom ◡𝐵) | |
3 | 1, 2 | syl 14 | . 2 ⊢ (𝐴 ⊆ 𝐵 → dom ◡𝐴 ⊆ dom ◡𝐵) |
4 | df-rn 4403 | . 2 ⊢ ran 𝐴 = dom ◡𝐴 | |
5 | df-rn 4403 | . 2 ⊢ ran 𝐵 = dom ◡𝐵 | |
6 | 3, 4, 5 | 3sstr4g 3050 | 1 ⊢ (𝐴 ⊆ 𝐵 → ran 𝐴 ⊆ ran 𝐵) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ⊆ wss 2983 ◡ccnv 4391 dom cdm 4392 ran crn 4393 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-io 663 ax-5 1377 ax-7 1378 ax-gen 1379 ax-ie1 1423 ax-ie2 1424 ax-8 1436 ax-10 1437 ax-11 1438 ax-i12 1439 ax-bndl 1440 ax-4 1441 ax-17 1460 ax-i9 1464 ax-ial 1468 ax-i5r 1469 ax-ext 2065 |
This theorem depends on definitions: df-bi 115 df-3an 922 df-tru 1288 df-nf 1391 df-sb 1688 df-clab 2070 df-cleq 2076 df-clel 2079 df-nfc 2212 df-v 2612 df-un 2987 df-in 2989 df-ss 2996 df-sn 3423 df-pr 3424 df-op 3426 df-br 3807 df-opab 3861 df-cnv 4400 df-dm 4402 df-rn 4403 |
This theorem is referenced by: imass1 4751 imass2 4752 ssxpbm 4807 ssxp2 4809 ssrnres 4814 funssxp 5112 fssres 5118 dff2 5364 fliftf 5491 1stcof 5842 2ndcof 5843 smores 5962 tfrcllembfn 6027 frecuzrdgtcl 9530 |
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