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Theorem elind 3414
Description: Deduce membership in an intersection of two classes. (Contributed by Jonathan Ben-Naim, 3-Jun-2011.)
Hypotheses
Ref Expression
elind.1 (𝜑𝑋𝐴)
elind.2 (𝜑𝑋𝐵)
Assertion
Ref Expression
elind (𝜑𝑋 ∈ (𝐴𝐵))

Proof of Theorem elind
StepHypRef Expression
1 elind.1 . 2 (𝜑𝑋𝐴)
2 elind.2 . 2 (𝜑𝑋𝐵)
3 elin 3412 . 2 (𝑋 ∈ (𝐴𝐵) ↔ (𝑋𝐴𝑋𝐵))
41, 2, 3sylanbrc 421 1 (𝜑𝑋 ∈ (𝐴𝐵))
Colors of variables: wff set class
Syntax hints:  wi 4  wcel 2209  cin 3219
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-ext 2220
This theorem depends on definitions:  df-bi 117  df-tru 1405  df-nf 1514  df-sb 1816  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-v 2823  df-in 3226
This theorem is referenced by:  fnfvimad  5944  elfir  7297  infpwfidom  7540  hashfibclem  11260  ballotfilem2  13206  nninfdclemcl  13317  nninfdclemp1  13319  strslfv2d  13373  bassetsnn  13387  insubm  13769  2idl0  14821  2idl1  14822  baspartn  15074  bastg  15085  isopn3  15149  restbasg  15192  lmss  15270  metrest  15530  tgioo  15578  dvmulxxbr  15726  elply2  15759  pilem3  15807  2sqlem7  16154
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