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Theorem rnss 4769
Description: Subset theorem for range. (Contributed by NM, 22-Mar-1998.)
Assertion
Ref Expression
rnss (𝐴𝐵 → ran 𝐴 ⊆ ran 𝐵)

Proof of Theorem rnss
StepHypRef Expression
1 cnvss 4712 . . 3 (𝐴𝐵𝐴𝐵)
2 dmss 4738 . . 3 (𝐴𝐵 → dom 𝐴 ⊆ dom 𝐵)
31, 2syl 14 . 2 (𝐴𝐵 → dom 𝐴 ⊆ dom 𝐵)
4 df-rn 4550 . 2 ran 𝐴 = dom 𝐴
5 df-rn 4550 . 2 ran 𝐵 = dom 𝐵
63, 4, 53sstr4g 3140 1 (𝐴𝐵 → ran 𝐴 ⊆ ran 𝐵)
Colors of variables: wff set class
Syntax hints:  wi 4  wss 3071  ccnv 4538  dom cdm 4539  ran crn 4540
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 698  ax-5 1423  ax-7 1424  ax-gen 1425  ax-ie1 1469  ax-ie2 1470  ax-8 1482  ax-10 1483  ax-11 1484  ax-i12 1485  ax-bndl 1486  ax-4 1487  ax-17 1506  ax-i9 1510  ax-ial 1514  ax-i5r 1515  ax-ext 2121
This theorem depends on definitions:  df-bi 116  df-3an 964  df-tru 1334  df-nf 1437  df-sb 1736  df-clab 2126  df-cleq 2132  df-clel 2135  df-nfc 2270  df-v 2688  df-un 3075  df-in 3077  df-ss 3084  df-sn 3533  df-pr 3534  df-op 3536  df-br 3930  df-opab 3990  df-cnv 4547  df-dm 4549  df-rn 4550
This theorem is referenced by:  imass1  4914  imass2  4915  rnxpss2  4972  ssxpbm  4974  ssxp2  4976  ssrnres  4981  funssxp  5292  fssres  5298  dff2  5564  fliftf  5700  1stcof  6061  2ndcof  6062  smores  6189  tfrcllembfn  6254  caserel  6972  frecuzrdgtcl  10185  lmss  12415  txss12  12435  txbasval  12436
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