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Theorem wunf 10414
Description: A weak universe is closed under functions with known domain and codomain. (Contributed by Mario Carneiro, 2-Jan-2017.)
Hypotheses
Ref Expression
wun0.1 (𝜑𝑈 ∈ WUni)
wunop.2 (𝜑𝐴𝑈)
wunop.3 (𝜑𝐵𝑈)
wunf.3 (𝜑𝐹:𝐴𝐵)
Assertion
Ref Expression
wunf (𝜑𝐹𝑈)

Proof of Theorem wunf
StepHypRef Expression
1 wun0.1 . . 3 (𝜑𝑈 ∈ WUni)
2 wunop.3 . . . 4 (𝜑𝐵𝑈)
3 wunop.2 . . . 4 (𝜑𝐴𝑈)
41, 2, 3wunmap 10413 . . 3 (𝜑 → (𝐵m 𝐴) ∈ 𝑈)
51, 4wunelss 10395 . 2 (𝜑 → (𝐵m 𝐴) ⊆ 𝑈)
6 wunf.3 . . 3 (𝜑𝐹:𝐴𝐵)
72, 3elmapd 8587 . . 3 (𝜑 → (𝐹 ∈ (𝐵m 𝐴) ↔ 𝐹:𝐴𝐵))
86, 7mpbird 256 . 2 (𝜑𝐹 ∈ (𝐵m 𝐴))
95, 8sseldd 3918 1 (𝜑𝐹𝑈)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wcel 2108  wf 6414  (class class class)co 7255  m cmap 8573  WUnicwun 10387
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1799  ax-4 1813  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2110  ax-9 2118  ax-10 2139  ax-11 2156  ax-12 2173  ax-ext 2709  ax-sep 5218  ax-nul 5225  ax-pow 5283  ax-pr 5347  ax-un 7566
This theorem depends on definitions:  df-bi 206  df-an 396  df-or 844  df-3an 1087  df-tru 1542  df-fal 1552  df-ex 1784  df-nf 1788  df-sb 2069  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2817  df-nfc 2888  df-ne 2943  df-ral 3068  df-rex 3069  df-rab 3072  df-v 3424  df-sbc 3712  df-csb 3829  df-dif 3886  df-un 3888  df-in 3890  df-ss 3900  df-nul 4254  df-if 4457  df-pw 4532  df-sn 4559  df-pr 4561  df-op 4565  df-uni 4837  df-iun 4923  df-br 5071  df-opab 5133  df-mpt 5154  df-tr 5188  df-id 5480  df-xp 5586  df-rel 5587  df-cnv 5588  df-co 5589  df-dm 5590  df-rn 5591  df-res 5592  df-ima 5593  df-iota 6376  df-fun 6420  df-fn 6421  df-f 6422  df-fv 6426  df-ov 7258  df-oprab 7259  df-mpo 7260  df-1st 7804  df-2nd 7805  df-map 8575  df-pm 8576  df-wun 10389
This theorem is referenced by:  wunndx  16824  wunnat  17588  wunnatOLD  17589  catcoppccl  17748  catcoppcclOLD  17749  catcfuccl  17750  catcfucclOLD  17751  catcxpccl  17840  catcxpcclOLD  17841
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