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Theorem ismnu 41879
Description: The hypothesis of this theorem defines a class M of sets that we temporarily call "minimal universes", and which will turn out in grumnueq 41905 to be exactly Grothendicek universes. Minimal universes are sets which satisfy the predicate on 𝑦 in rr-groth 41917, except for the 𝑥𝑦 clause.

A minimal universe is closed under subsets (mnussd 41881), powersets (mnupwd 41885), and an operation which is similar to a combination of collection and union (mnuop3d 41889), from which closure under pairing (mnuprd 41894), unions (mnuunid 41895), and function ranges (mnurnd 41901) can be deduced, from which equivalence with Grothendieck universes (grumnueq 41905) can be deduced. (Contributed by Rohan Ridenour, 13-Aug-2023.)

Hypothesis
Ref Expression
ismnu.1 𝑀 = {𝑘 ∣ ∀𝑙𝑘 (𝒫 𝑙𝑘 ∧ ∀𝑚𝑛𝑘 (𝒫 𝑙𝑛 ∧ ∀𝑝𝑙 (∃𝑞𝑘 (𝑝𝑞𝑞𝑚) → ∃𝑟𝑚 (𝑝𝑟 𝑟𝑛))))}
Assertion
Ref Expression
ismnu (𝑈𝑉 → (𝑈𝑀 ↔ ∀𝑧𝑈 (𝒫 𝑧𝑈 ∧ ∀𝑓𝑤𝑈 (𝒫 𝑧𝑤 ∧ ∀𝑖𝑧 (∃𝑣𝑈 (𝑖𝑣𝑣𝑓) → ∃𝑢𝑓 (𝑖𝑢 𝑢𝑤))))))
Distinct variable groups:   𝑧,𝑤,𝑣,𝑈,𝑓,𝑖,𝑘,𝑚,𝑛,𝑞,𝑝,𝑙   𝑧,𝑢,𝑟,𝑤,𝑈,𝑓,𝑖,𝑘,𝑚,𝑛,𝑝,𝑙
Allowed substitution hints:   𝑀(𝑧,𝑤,𝑣,𝑢,𝑓,𝑖,𝑘,𝑚,𝑛,𝑟,𝑞,𝑝,𝑙)   𝑉(𝑧,𝑤,𝑣,𝑢,𝑓,𝑖,𝑘,𝑚,𝑛,𝑟,𝑞,𝑝,𝑙)

Proof of Theorem ismnu
StepHypRef Expression
1 simpr 485 . . . . . 6 ((𝑘 = 𝑈𝑙 = 𝑧) → 𝑙 = 𝑧)
21pweqd 4552 . . . . 5 ((𝑘 = 𝑈𝑙 = 𝑧) → 𝒫 𝑙 = 𝒫 𝑧)
3 simpl 483 . . . . 5 ((𝑘 = 𝑈𝑙 = 𝑧) → 𝑘 = 𝑈)
42, 3sseq12d 3954 . . . 4 ((𝑘 = 𝑈𝑙 = 𝑧) → (𝒫 𝑙𝑘 ↔ 𝒫 𝑧𝑈))
523adant3 1131 . . . . . . . . . 10 ((𝑘 = 𝑈𝑙 = 𝑧𝑚 = 𝑓) → 𝒫 𝑙 = 𝒫 𝑧)
65adantr 481 . . . . . . . . 9 (((𝑘 = 𝑈𝑙 = 𝑧𝑚 = 𝑓) ∧ 𝑛 = 𝑤) → 𝒫 𝑙 = 𝒫 𝑧)
7 simpr 485 . . . . . . . . 9 (((𝑘 = 𝑈𝑙 = 𝑧𝑚 = 𝑓) ∧ 𝑛 = 𝑤) → 𝑛 = 𝑤)
86, 7sseq12d 3954 . . . . . . . 8 (((𝑘 = 𝑈𝑙 = 𝑧𝑚 = 𝑓) ∧ 𝑛 = 𝑤) → (𝒫 𝑙𝑛 ↔ 𝒫 𝑧𝑤))
9 simpl3 1192 . . . . . . . . . . . . . 14 ((((𝑘 = 𝑈𝑙 = 𝑧𝑚 = 𝑓) ∧ 𝑛 = 𝑤𝑝 = 𝑖) ∧ 𝑞 = 𝑣) → 𝑝 = 𝑖)
10 simpr 485 . . . . . . . . . . . . . 14 ((((𝑘 = 𝑈𝑙 = 𝑧𝑚 = 𝑓) ∧ 𝑛 = 𝑤𝑝 = 𝑖) ∧ 𝑞 = 𝑣) → 𝑞 = 𝑣)
119, 10eleq12d 2833 . . . . . . . . . . . . 13 ((((𝑘 = 𝑈𝑙 = 𝑧𝑚 = 𝑓) ∧ 𝑛 = 𝑤𝑝 = 𝑖) ∧ 𝑞 = 𝑣) → (𝑝𝑞𝑖𝑣))
12 simpl13 1249 . . . . . . . . . . . . . 14 ((((𝑘 = 𝑈𝑙 = 𝑧𝑚 = 𝑓) ∧ 𝑛 = 𝑤𝑝 = 𝑖) ∧ 𝑞 = 𝑣) → 𝑚 = 𝑓)
1310, 12eleq12d 2833 . . . . . . . . . . . . 13 ((((𝑘 = 𝑈𝑙 = 𝑧𝑚 = 𝑓) ∧ 𝑛 = 𝑤𝑝 = 𝑖) ∧ 𝑞 = 𝑣) → (𝑞𝑚𝑣𝑓))
1411, 13anbi12d 631 . . . . . . . . . . . 12 ((((𝑘 = 𝑈𝑙 = 𝑧𝑚 = 𝑓) ∧ 𝑛 = 𝑤𝑝 = 𝑖) ∧ 𝑞 = 𝑣) → ((𝑝𝑞𝑞𝑚) ↔ (𝑖𝑣𝑣𝑓)))
15 simpl11 1247 . . . . . . . . . . . 12 ((((𝑘 = 𝑈𝑙 = 𝑧𝑚 = 𝑓) ∧ 𝑛 = 𝑤𝑝 = 𝑖) ∧ 𝑞 = 𝑣) → 𝑘 = 𝑈)
1614, 15cbvrexdva2 3393 . . . . . . . . . . 11 (((𝑘 = 𝑈𝑙 = 𝑧𝑚 = 𝑓) ∧ 𝑛 = 𝑤𝑝 = 𝑖) → (∃𝑞𝑘 (𝑝𝑞𝑞𝑚) ↔ ∃𝑣𝑈 (𝑖𝑣𝑣𝑓)))
17 simpl3 1192 . . . . . . . . . . . . . 14 ((((𝑘 = 𝑈𝑙 = 𝑧𝑚 = 𝑓) ∧ 𝑛 = 𝑤𝑝 = 𝑖) ∧ 𝑟 = 𝑢) → 𝑝 = 𝑖)
18 simpr 485 . . . . . . . . . . . . . 14 ((((𝑘 = 𝑈𝑙 = 𝑧𝑚 = 𝑓) ∧ 𝑛 = 𝑤𝑝 = 𝑖) ∧ 𝑟 = 𝑢) → 𝑟 = 𝑢)
1917, 18eleq12d 2833 . . . . . . . . . . . . 13 ((((𝑘 = 𝑈𝑙 = 𝑧𝑚 = 𝑓) ∧ 𝑛 = 𝑤𝑝 = 𝑖) ∧ 𝑟 = 𝑢) → (𝑝𝑟𝑖𝑢))
2018unieqd 4853 . . . . . . . . . . . . . 14 ((((𝑘 = 𝑈𝑙 = 𝑧𝑚 = 𝑓) ∧ 𝑛 = 𝑤𝑝 = 𝑖) ∧ 𝑟 = 𝑢) → 𝑟 = 𝑢)
21 simpl2 1191 . . . . . . . . . . . . . 14 ((((𝑘 = 𝑈𝑙 = 𝑧𝑚 = 𝑓) ∧ 𝑛 = 𝑤𝑝 = 𝑖) ∧ 𝑟 = 𝑢) → 𝑛 = 𝑤)
2220, 21sseq12d 3954 . . . . . . . . . . . . 13 ((((𝑘 = 𝑈𝑙 = 𝑧𝑚 = 𝑓) ∧ 𝑛 = 𝑤𝑝 = 𝑖) ∧ 𝑟 = 𝑢) → ( 𝑟𝑛 𝑢𝑤))
2319, 22anbi12d 631 . . . . . . . . . . . 12 ((((𝑘 = 𝑈𝑙 = 𝑧𝑚 = 𝑓) ∧ 𝑛 = 𝑤𝑝 = 𝑖) ∧ 𝑟 = 𝑢) → ((𝑝𝑟 𝑟𝑛) ↔ (𝑖𝑢 𝑢𝑤)))
24 simpl13 1249 . . . . . . . . . . . 12 ((((𝑘 = 𝑈𝑙 = 𝑧𝑚 = 𝑓) ∧ 𝑛 = 𝑤𝑝 = 𝑖) ∧ 𝑟 = 𝑢) → 𝑚 = 𝑓)
2523, 24cbvrexdva2 3393 . . . . . . . . . . 11 (((𝑘 = 𝑈𝑙 = 𝑧𝑚 = 𝑓) ∧ 𝑛 = 𝑤𝑝 = 𝑖) → (∃𝑟𝑚 (𝑝𝑟 𝑟𝑛) ↔ ∃𝑢𝑓 (𝑖𝑢 𝑢𝑤)))
2616, 25imbi12d 345 . . . . . . . . . 10 (((𝑘 = 𝑈𝑙 = 𝑧𝑚 = 𝑓) ∧ 𝑛 = 𝑤𝑝 = 𝑖) → ((∃𝑞𝑘 (𝑝𝑞𝑞𝑚) → ∃𝑟𝑚 (𝑝𝑟 𝑟𝑛)) ↔ (∃𝑣𝑈 (𝑖𝑣𝑣𝑓) → ∃𝑢𝑓 (𝑖𝑢 𝑢𝑤))))
27263expa 1117 . . . . . . . . 9 ((((𝑘 = 𝑈𝑙 = 𝑧𝑚 = 𝑓) ∧ 𝑛 = 𝑤) ∧ 𝑝 = 𝑖) → ((∃𝑞𝑘 (𝑝𝑞𝑞𝑚) → ∃𝑟𝑚 (𝑝𝑟 𝑟𝑛)) ↔ (∃𝑣𝑈 (𝑖𝑣𝑣𝑓) → ∃𝑢𝑓 (𝑖𝑢 𝑢𝑤))))
28 simpll2 1212 . . . . . . . . 9 ((((𝑘 = 𝑈𝑙 = 𝑧𝑚 = 𝑓) ∧ 𝑛 = 𝑤) ∧ 𝑝 = 𝑖) → 𝑙 = 𝑧)
2927, 28cbvraldva2 3392 . . . . . . . 8 (((𝑘 = 𝑈𝑙 = 𝑧𝑚 = 𝑓) ∧ 𝑛 = 𝑤) → (∀𝑝𝑙 (∃𝑞𝑘 (𝑝𝑞𝑞𝑚) → ∃𝑟𝑚 (𝑝𝑟 𝑟𝑛)) ↔ ∀𝑖𝑧 (∃𝑣𝑈 (𝑖𝑣𝑣𝑓) → ∃𝑢𝑓 (𝑖𝑢 𝑢𝑤))))
308, 29anbi12d 631 . . . . . . 7 (((𝑘 = 𝑈𝑙 = 𝑧𝑚 = 𝑓) ∧ 𝑛 = 𝑤) → ((𝒫 𝑙𝑛 ∧ ∀𝑝𝑙 (∃𝑞𝑘 (𝑝𝑞𝑞𝑚) → ∃𝑟𝑚 (𝑝𝑟 𝑟𝑛))) ↔ (𝒫 𝑧𝑤 ∧ ∀𝑖𝑧 (∃𝑣𝑈 (𝑖𝑣𝑣𝑓) → ∃𝑢𝑓 (𝑖𝑢 𝑢𝑤)))))
31 simpl1 1190 . . . . . . 7 (((𝑘 = 𝑈𝑙 = 𝑧𝑚 = 𝑓) ∧ 𝑛 = 𝑤) → 𝑘 = 𝑈)
3230, 31cbvrexdva2 3393 . . . . . 6 ((𝑘 = 𝑈𝑙 = 𝑧𝑚 = 𝑓) → (∃𝑛𝑘 (𝒫 𝑙𝑛 ∧ ∀𝑝𝑙 (∃𝑞𝑘 (𝑝𝑞𝑞𝑚) → ∃𝑟𝑚 (𝑝𝑟 𝑟𝑛))) ↔ ∃𝑤𝑈 (𝒫 𝑧𝑤 ∧ ∀𝑖𝑧 (∃𝑣𝑈 (𝑖𝑣𝑣𝑓) → ∃𝑢𝑓 (𝑖𝑢 𝑢𝑤)))))
33323expa 1117 . . . . 5 (((𝑘 = 𝑈𝑙 = 𝑧) ∧ 𝑚 = 𝑓) → (∃𝑛𝑘 (𝒫 𝑙𝑛 ∧ ∀𝑝𝑙 (∃𝑞𝑘 (𝑝𝑞𝑞𝑚) → ∃𝑟𝑚 (𝑝𝑟 𝑟𝑛))) ↔ ∃𝑤𝑈 (𝒫 𝑧𝑤 ∧ ∀𝑖𝑧 (∃𝑣𝑈 (𝑖𝑣𝑣𝑓) → ∃𝑢𝑓 (𝑖𝑢 𝑢𝑤)))))
3433cbvaldvaw 2041 . . . 4 ((𝑘 = 𝑈𝑙 = 𝑧) → (∀𝑚𝑛𝑘 (𝒫 𝑙𝑛 ∧ ∀𝑝𝑙 (∃𝑞𝑘 (𝑝𝑞𝑞𝑚) → ∃𝑟𝑚 (𝑝𝑟 𝑟𝑛))) ↔ ∀𝑓𝑤𝑈 (𝒫 𝑧𝑤 ∧ ∀𝑖𝑧 (∃𝑣𝑈 (𝑖𝑣𝑣𝑓) → ∃𝑢𝑓 (𝑖𝑢 𝑢𝑤)))))
354, 34anbi12d 631 . . 3 ((𝑘 = 𝑈𝑙 = 𝑧) → ((𝒫 𝑙𝑘 ∧ ∀𝑚𝑛𝑘 (𝒫 𝑙𝑛 ∧ ∀𝑝𝑙 (∃𝑞𝑘 (𝑝𝑞𝑞𝑚) → ∃𝑟𝑚 (𝑝𝑟 𝑟𝑛)))) ↔ (𝒫 𝑧𝑈 ∧ ∀𝑓𝑤𝑈 (𝒫 𝑧𝑤 ∧ ∀𝑖𝑧 (∃𝑣𝑈 (𝑖𝑣𝑣𝑓) → ∃𝑢𝑓 (𝑖𝑢 𝑢𝑤))))))
3635, 3cbvraldva2 3392 . 2 (𝑘 = 𝑈 → (∀𝑙𝑘 (𝒫 𝑙𝑘 ∧ ∀𝑚𝑛𝑘 (𝒫 𝑙𝑛 ∧ ∀𝑝𝑙 (∃𝑞𝑘 (𝑝𝑞𝑞𝑚) → ∃𝑟𝑚 (𝑝𝑟 𝑟𝑛)))) ↔ ∀𝑧𝑈 (𝒫 𝑧𝑈 ∧ ∀𝑓𝑤𝑈 (𝒫 𝑧𝑤 ∧ ∀𝑖𝑧 (∃𝑣𝑈 (𝑖𝑣𝑣𝑓) → ∃𝑢𝑓 (𝑖𝑢 𝑢𝑤))))))
37 ismnu.1 . 2 𝑀 = {𝑘 ∣ ∀𝑙𝑘 (𝒫 𝑙𝑘 ∧ ∀𝑚𝑛𝑘 (𝒫 𝑙𝑛 ∧ ∀𝑝𝑙 (∃𝑞𝑘 (𝑝𝑞𝑞𝑚) → ∃𝑟𝑚 (𝑝𝑟 𝑟𝑛))))}
3836, 37elab2g 3611 1 (𝑈𝑉 → (𝑈𝑀 ↔ ∀𝑧𝑈 (𝒫 𝑧𝑈 ∧ ∀𝑓𝑤𝑈 (𝒫 𝑧𝑤 ∧ ∀𝑖𝑧 (∃𝑣𝑈 (𝑖𝑣𝑣𝑓) → ∃𝑢𝑓 (𝑖𝑢 𝑢𝑤))))))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 205  wa 396  w3a 1086  wal 1537   = wceq 1539  wcel 2106  {cab 2715  wral 3064  wrex 3065  wss 3887  𝒫 cpw 4533   cuni 4839
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1798  ax-4 1812  ax-5 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-ext 2709
This theorem depends on definitions:  df-bi 206  df-an 397  df-3an 1088  df-tru 1542  df-ex 1783  df-sb 2068  df-clab 2716  df-cleq 2730  df-clel 2816  df-ral 3069  df-rex 3070  df-v 3434  df-in 3894  df-ss 3904  df-pw 4535  df-uni 4840
This theorem is referenced by:  mnuop123d  41880  grumnudlem  41903  rr-grothprimbi  41913  rr-groth  41917  dfuniv2  41920
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