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Theorem rncoss 5826
Description: Range of a composition. (Contributed by NM, 19-Mar-1998.)
Assertion
Ref Expression
rncoss ran (𝐴𝐵) ⊆ ran 𝐴

Proof of Theorem rncoss
StepHypRef Expression
1 dmcoss 5825 . 2 dom (𝐵𝐴) ⊆ dom 𝐴
2 df-rn 5547 . . 3 ran (𝐴𝐵) = dom (𝐴𝐵)
3 cnvco 5739 . . . 4 (𝐴𝐵) = (𝐵𝐴)
43dmeqi 5758 . . 3 dom (𝐴𝐵) = dom (𝐵𝐴)
52, 4eqtri 2759 . 2 ran (𝐴𝐵) = dom (𝐵𝐴)
6 df-rn 5547 . 2 ran 𝐴 = dom 𝐴
71, 5, 63sstr4i 3930 1 ran (𝐴𝐵) ⊆ ran 𝐴
Colors of variables: wff setvar class
Syntax hints:  wss 3853  ccnv 5535  dom cdm 5536  ran crn 5537  ccom 5540
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1803  ax-4 1817  ax-5 1918  ax-6 1976  ax-7 2018  ax-8 2114  ax-9 2122  ax-10 2143  ax-12 2177  ax-ext 2708  ax-sep 5177  ax-nul 5184  ax-pr 5307
This theorem depends on definitions:  df-bi 210  df-an 400  df-or 848  df-3an 1091  df-tru 1546  df-fal 1556  df-ex 1788  df-nf 1792  df-sb 2073  df-clab 2715  df-cleq 2728  df-clel 2809  df-rab 3060  df-v 3400  df-dif 3856  df-un 3858  df-in 3860  df-ss 3870  df-nul 4224  df-if 4426  df-sn 4528  df-pr 4530  df-op 4534  df-br 5040  df-opab 5102  df-cnv 5544  df-co 5545  df-dm 5546  df-rn 5547
This theorem is referenced by:  cossxp  6115  fcof  6546  fcoOLD  6548  fco3OLD  6557  fin23lem29  9920  fin23lem30  9921  wunco  10312  imasless  16999  gsumzf1o  19251  znleval  20473  pi1xfrcnvlem  23907  pjss1coi  30198  pj3i  30243  smatrcl  31414  mblfinlem3  35502  mblfinlem4  35503  ismblfin  35504  relexp0a  40942  rntrclfv  40958  stoweidlem27  43186  fourierdlem42  43308  hoicvr  43704
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