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Theorem 2ndrn 5953
Description: The second ordered pair component of a member of a relation belongs to the range of the relation. (Contributed by NM, 17-Sep-2006.)
Assertion
Ref Expression
2ndrn ((Rel 𝑅𝐴𝑅) → (2nd𝐴) ∈ ran 𝑅)

Proof of Theorem 2ndrn
StepHypRef Expression
1 simpr 108 . 2 ((Rel 𝑅𝐴𝑅) → 𝐴𝑅)
2 1st2nd 5951 . . 3 ((Rel 𝑅𝐴𝑅) → 𝐴 = ⟨(1st𝐴), (2nd𝐴)⟩)
32, 1eqeltrrd 2165 . 2 ((Rel 𝑅𝐴𝑅) → ⟨(1st𝐴), (2nd𝐴)⟩ ∈ 𝑅)
4 1stexg 5938 . . . 4 (𝐴𝑅 → (1st𝐴) ∈ V)
5 2ndexg 5939 . . . 4 (𝐴𝑅 → (2nd𝐴) ∈ V)
64, 5jca 300 . . 3 (𝐴𝑅 → ((1st𝐴) ∈ V ∧ (2nd𝐴) ∈ V))
7 opelrng 4667 . . . 4 (((1st𝐴) ∈ V ∧ (2nd𝐴) ∈ V ∧ ⟨(1st𝐴), (2nd𝐴)⟩ ∈ 𝑅) → (2nd𝐴) ∈ ran 𝑅)
873expa 1143 . . 3 ((((1st𝐴) ∈ V ∧ (2nd𝐴) ∈ V) ∧ ⟨(1st𝐴), (2nd𝐴)⟩ ∈ 𝑅) → (2nd𝐴) ∈ ran 𝑅)
96, 8sylan 277 . 2 ((𝐴𝑅 ∧ ⟨(1st𝐴), (2nd𝐴)⟩ ∈ 𝑅) → (2nd𝐴) ∈ ran 𝑅)
101, 3, 9syl2anc 403 1 ((Rel 𝑅𝐴𝑅) → (2nd𝐴) ∈ ran 𝑅)
Colors of variables: wff set class
Syntax hints:  wi 4  wa 102  wcel 1438  Vcvv 2619  cop 3449  ran crn 4439  Rel wrel 4443  cfv 5015  1st c1st 5909  2nd c2nd 5910
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 665  ax-5 1381  ax-7 1382  ax-gen 1383  ax-ie1 1427  ax-ie2 1428  ax-8 1440  ax-10 1441  ax-11 1442  ax-i12 1443  ax-bndl 1444  ax-4 1445  ax-13 1449  ax-14 1450  ax-17 1464  ax-i9 1468  ax-ial 1472  ax-i5r 1473  ax-ext 2070  ax-sep 3957  ax-pow 4009  ax-pr 4036  ax-un 4260
This theorem depends on definitions:  df-bi 115  df-3an 926  df-tru 1292  df-nf 1395  df-sb 1693  df-eu 1951  df-mo 1952  df-clab 2075  df-cleq 2081  df-clel 2084  df-nfc 2217  df-ral 2364  df-rex 2365  df-v 2621  df-sbc 2841  df-un 3003  df-in 3005  df-ss 3012  df-pw 3431  df-sn 3452  df-pr 3453  df-op 3455  df-uni 3654  df-br 3846  df-opab 3900  df-mpt 3901  df-id 4120  df-xp 4444  df-rel 4445  df-cnv 4446  df-co 4447  df-dm 4448  df-rn 4449  df-iota 4980  df-fun 5017  df-fn 5018  df-f 5019  df-fo 5021  df-fv 5023  df-1st 5911  df-2nd 5912
This theorem is referenced by: (None)
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