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Theorem elin2 4176
Description: Membership in a class defined as an intersection. (Contributed by Stefan O'Rear, 29-Mar-2015.)
Hypothesis
Ref Expression
elin2.x 𝑋 = (𝐵𝐶)
Assertion
Ref Expression
elin2 (𝐴𝑋 ↔ (𝐴𝐵𝐴𝐶))

Proof of Theorem elin2
StepHypRef Expression
1 elin2.x . . 3 𝑋 = (𝐵𝐶)
21eleq2i 2906 . 2 (𝐴𝑋𝐴 ∈ (𝐵𝐶))
3 elin 4171 . 2 (𝐴 ∈ (𝐵𝐶) ↔ (𝐴𝐵𝐴𝐶))
42, 3bitri 277 1 (𝐴𝑋 ↔ (𝐴𝐵𝐴𝐶))
Colors of variables: wff setvar class
Syntax hints:  wb 208  wa 398   = wceq 1537  wcel 2114  cin 3937
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2161  ax-12 2177  ax-ext 2795
This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-tru 1540  df-ex 1781  df-nf 1785  df-sb 2070  df-clab 2802  df-cleq 2816  df-clel 2895  df-nfc 2965  df-v 3498  df-in 3945
This theorem is referenced by:  elin3  4179  opelres  5861  elpredim  6162  elpred  6163  elpredg  6164  fnres  6476  funfvima  6994  fnwelem  7827  ressuppssdif  7853  fz1isolem  13822  isabl  18912  isfld  19513  2idlcpbl  20009  qus1  20010  qusrhm  20012  isidom  20079  lmres  21910  isnvc  23306  cvslvec  23731  cvsclm  23732  iscvs  23733  cvsi  23736  ishl  23967  ply1pid  24775  rplogsum  26105  iscusgr  27202  isphg  28596  ishlo  28666  hhsscms  29057  mayete3i  29507  isogrp  30705  isofld  30877  sltres  33171  bj-elid6  34464  bj-isrvec  34577  caures  35037  iscrngo  35276  fldcrng  35284  isdmn  35334  isolat  36350  srhmsubclem1  44351  srhmsubc  44354  srhmsubcALTV  44372
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