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Theorem gru0eld 41373
Description: A nonempty Grothendieck universe contains the empty set. (Contributed by Rohan Ridenour, 11-Aug-2023.)
Hypotheses
Ref Expression
gru0eld.1 (𝜑𝐺 ∈ Univ)
gru0eld.2 (𝜑𝐴𝐺)
Assertion
Ref Expression
gru0eld (𝜑 → ∅ ∈ 𝐺)

Proof of Theorem gru0eld
StepHypRef Expression
1 gru0eld.1 . 2 (𝜑𝐺 ∈ Univ)
2 gru0eld.2 . 2 (𝜑𝐴𝐺)
3 0ss 4282 . . 3 ∅ ⊆ 𝐴
43a1i 11 . 2 (𝜑 → ∅ ⊆ 𝐴)
5 gruss 10289 . 2 ((𝐺 ∈ Univ ∧ 𝐴𝐺 ∧ ∅ ⊆ 𝐴) → ∅ ∈ 𝐺)
61, 2, 4, 5syl3anc 1372 1 (𝜑 → ∅ ∈ 𝐺)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wcel 2113  wss 3841  c0 4209  Univcgru 10283
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1802  ax-4 1816  ax-5 1916  ax-6 1974  ax-7 2019  ax-8 2115  ax-9 2123  ax-10 2144  ax-11 2161  ax-12 2178  ax-ext 2710  ax-sep 5164
This theorem depends on definitions:  df-bi 210  df-an 400  df-or 847  df-3an 1090  df-tru 1545  df-fal 1555  df-ex 1787  df-nf 1791  df-sb 2074  df-clab 2717  df-cleq 2730  df-clel 2811  df-nfc 2881  df-ral 3058  df-rab 3062  df-v 3399  df-dif 3844  df-un 3846  df-in 3848  df-ss 3858  df-nul 4210  df-pw 4487  df-sn 4514  df-pr 4516  df-op 4520  df-uni 4794  df-br 5028  df-tr 5134  df-iota 6291  df-fv 6341  df-ov 7167  df-gru 10284
This theorem is referenced by:  grur1cld  41376  grucollcld  41404
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