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Theorem nel2nelini 45053
Description: Membership in an intersection implies membership in the second set. (Contributed by Glauco Siliprandi, 2-Jan-2022.)
Hypothesis
Ref Expression
nel2nelini.1 ¬ 𝐴𝐶
Assertion
Ref Expression
nel2nelini ¬ 𝐴 ∈ (𝐵𝐶)

Proof of Theorem nel2nelini
StepHypRef Expression
1 nel2nelini.1 . 2 ¬ 𝐴𝐶
2 nel2nelin 45051 . 2 𝐴𝐶 → ¬ 𝐴 ∈ (𝐵𝐶))
31, 2ax-mp 5 1 ¬ 𝐴 ∈ (𝐵𝐶)
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wcel 2108  cin 3975
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1793  ax-4 1807  ax-5 1909  ax-6 1967  ax-7 2007  ax-8 2110  ax-9 2118  ax-ext 2711
This theorem depends on definitions:  df-bi 207  df-an 396  df-tru 1540  df-ex 1778  df-sb 2065  df-clab 2718  df-cleq 2732  df-clel 2819  df-v 3490  df-in 3983
This theorem is referenced by: (None)
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