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Theorem mnugrud 45227
Description: Minimal universes are Grothendieck universes. (Contributed by Rohan Ridenour, 13-Aug-2023.)
Hypotheses
Ref Expression
mnugrud.1 𝑀 = {𝑘 ∣ ∀𝑙 ∈ 𝑘 (𝒫 𝑙 ⊆ 𝑘 ∧ ∀𝑚∃𝑛 ∈ 𝑘 (𝒫 𝑙 ⊆ 𝑛 ∧ ∀𝑝 ∈ 𝑙 (∃𝑞 ∈ 𝑘 (𝑝 ∈ 𝑞 ∧ 𝑞 ∈ 𝑚) → ∃𝑟 ∈ 𝑚 (𝑝 ∈ 𝑟 ∧ ∪ 𝑟 ⊆ 𝑛))))}
mnugrud.2 (𝜑 → 𝑈 ∈ 𝑀)
Assertion
Ref Expression
mnugrud (𝜑 → 𝑈 ∈ Univ)
Distinct variable groups:   𝑈,𝑘,𝑚,𝑛,𝑟,𝑝,𝑙   𝑈,𝑞,𝑘,𝑚,𝑛,𝑝,𝑙
Allowed substitution hints:   𝜑(𝑘, 𝑚, 𝑛, 𝑟, 𝑞, 𝑝, 𝑙)   𝑀(𝑘, 𝑚, 𝑛, 𝑟, 𝑞, 𝑝, 𝑙)

Proof of Theorem mnugrud
Dummy variables 𝑥 𝑦 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 mnugrud.1 . . 3 𝑀 = {𝑘 ∣ ∀𝑙 ∈ 𝑘 (𝒫 𝑙 ⊆ 𝑘 ∧ ∀𝑚∃𝑛 ∈ 𝑘 (𝒫 𝑙 ⊆ 𝑛 ∧ ∀𝑝 ∈ 𝑙 (∃𝑞 ∈ 𝑘 (𝑝 ∈ 𝑞 ∧ 𝑞 ∈ 𝑚) → ∃𝑟 ∈ 𝑚 (𝑝 ∈ 𝑟 ∧ ∪ 𝑟 ⊆ 𝑛))))}
2 mnugrud.2 . . 3 (𝜑 → 𝑈 ∈ 𝑀)
31, 2mnutrd 45223 . 2 (𝜑 → Tr 𝑈)
42adantr 486 . . . . 5 ((𝜑 ∧ 𝑥 ∈ 𝑈) → 𝑈 ∈ 𝑀)
5 simpr 490 . . . . 5 ((𝜑 ∧ 𝑥 ∈ 𝑈) → 𝑥 ∈ 𝑈)
61, 4, 5mnupwd 45210 . . . 4 ((𝜑 ∧ 𝑥 ∈ 𝑈) → 𝒫 𝑥 ∈ 𝑈)
72ad2antrr 739 . . . . . 6 (((𝜑 ∧ 𝑥 ∈ 𝑈) ∧ 𝑦 ∈ 𝑈) → 𝑈 ∈ 𝑀)
85adantr 486 . . . . . 6 (((𝜑 ∧ 𝑥 ∈ 𝑈) ∧ 𝑦 ∈ 𝑈) → 𝑥 ∈ 𝑈)
9 simpr 490 . . . . . 6 (((𝜑 ∧ 𝑥 ∈ 𝑈) ∧ 𝑦 ∈ 𝑈) → 𝑦 ∈ 𝑈)
101, 7, 8, 9mnuprd 45219 . . . . 5 (((𝜑 ∧ 𝑥 ∈ 𝑈) ∧ 𝑦 ∈ 𝑈) → {𝑥, 𝑦} ∈ 𝑈)
1110ralrimiva 3155 . . . 4 ((𝜑 ∧ 𝑥 ∈ 𝑈) → ∀𝑦 ∈ 𝑈 {𝑥, 𝑦} ∈ 𝑈)
122ad2antrr 739 . . . . . 6 (((𝜑 ∧ 𝑥 ∈ 𝑈) ∧ 𝑦 ∈ (𝑈 ↑m 𝑥)) → 𝑈 ∈ 𝑀)
135adantr 486 . . . . . . 7 (((𝜑 ∧ 𝑥 ∈ 𝑈) ∧ 𝑦 ∈ (𝑈 ↑m 𝑥)) → 𝑥 ∈ 𝑈)
14 elmapi 8853 . . . . . . . 8 (𝑦 ∈ (𝑈 ↑m 𝑥) → 𝑦:𝑥⟶𝑈)
1514adantl 487 . . . . . . 7 (((𝜑 ∧ 𝑥 ∈ 𝑈) ∧ 𝑦 ∈ (𝑈 ↑m 𝑥)) → 𝑦:𝑥⟶𝑈)
161, 12, 13, 15mnurnd 45226 . . . . . 6 (((𝜑 ∧ 𝑥 ∈ 𝑈) ∧ 𝑦 ∈ (𝑈 ↑m 𝑥)) → ran 𝑦 ∈ 𝑈)
171, 12, 16mnuunid 45220 . . . . 5 (((𝜑 ∧ 𝑥 ∈ 𝑈) ∧ 𝑦 ∈ (𝑈 ↑m 𝑥)) → ∪ ran 𝑦 ∈ 𝑈)
1817ralrimiva 3155 . . . 4 ((𝜑 ∧ 𝑥 ∈ 𝑈) → ∀𝑦 ∈ (𝑈 ↑m 𝑥)∪ ran 𝑦 ∈ 𝑈)
196, 11, 183jca 1146 . . 3 ((𝜑 ∧ 𝑥 ∈ 𝑈) → (𝒫 𝑥 ∈ 𝑈 ∧ ∀𝑦 ∈ 𝑈 {𝑥, 𝑦} ∈ 𝑈 ∧ ∀𝑦 ∈ (𝑈 ↑m 𝑥)∪ ran 𝑦 ∈ 𝑈))
2019ralrimiva 3155 . 2 (𝜑 → ∀𝑥 ∈ 𝑈 (𝒫 𝑥 ∈ 𝑈 ∧ ∀𝑦 ∈ 𝑈 {𝑥, 𝑦} ∈ 𝑈 ∧ ∀𝑦 ∈ (𝑈 ↑m 𝑥)∪ ran 𝑦 ∈ 𝑈))
21 elgrug 10858 . . 3 (𝑈 ∈ 𝑀 → (𝑈 ∈ Univ ↔ (Tr 𝑈 ∧ ∀𝑥 ∈ 𝑈 (𝒫 𝑥 ∈ 𝑈 ∧ ∀𝑦 ∈ 𝑈 {𝑥, 𝑦} ∈ 𝑈 ∧ ∀𝑦 ∈ (𝑈 ↑m 𝑥)∪ ran 𝑦 ∈ 𝑈))))
222, 21syl 18 . 2 (𝜑 → (𝑈 ∈ Univ ↔ (Tr 𝑈 ∧ ∀𝑥 ∈ 𝑈 (𝒫 𝑥 ∈ 𝑈 ∧ ∀𝑦 ∈ 𝑈 {𝑥, 𝑦} ∈ 𝑈 ∧ ∀𝑦 ∈ (𝑈 ↑m 𝑥)∪ ran 𝑦 ∈ 𝑈))))
233, 20, 22mpbir2and 726 1 (𝜑 → 𝑈 ∈ Univ)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   ↔ wb 209   ∧ wa 401   ∧ w3a 1103  ∀wal 1568   = wceq 1570   ∈ wcel 2145  {cab 2739  ∀wral 3077  ∃wrex 3087   ⊆ wss 3899  𝒫 cpw 4557  {cpr 4586  ∪ cuni 4867  Tr wtr 5212  ran crn 5652  ⟶wf 6527  (class class class)co 7412   ↑m cmap 8831  Univcgru 10856
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1943  ax-6 2000  ax-7 2041  ax-8 2147  ax-9 2155  ax-10 2178  ax-11 2194  ax-12 2213  ax-ext 2733  ax-sep 5249  ax-nul 5260  ax-pow 5327  ax-pr 5391  ax-un 7740  ax-reg 9570
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2100  df-mo 2565  df-eu 2595  df-clab 2740  df-cleq 2753  df-clel 2836  df-nfc 2910  df-ne 2957  df-ral 3078  df-rex 3088  df-rab 3414  df-v 3453  df-sbc 3740  df-csb 3848  df-dif 3902  df-un 3904  df-in 3906  df-ss 3916  df-nul 4280  df-if 4483  df-pw 4559  df-sn 4585  df-pr 4587  df-op 4591  df-uni 4868  df-iun 4953  df-br 5104  df-opab 5168  df-mpt 5187  df-tr 5213  df-id 5546  df-eprel 5551  df-fr 5604  df-xp 5657  df-rel 5658  df-cnv 5659  df-co 5660  df-dm 5661  df-rn 5662  df-res 5663  df-ima 5664  df-iota 6487  df-fun 6533  df-fn 6534  df-f 6535  df-fv 6539  df-ov 7415  df-oprab 7416  df-mpo 7417  df-1st 7990  df-2nd 7991  df-map 8833  df-gru 10857
This theorem is used by:  grumnueq  45230
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