MPE Home Metamath Proof Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >  grur1 Structured version   Visualization version   GIF version

Theorem grur1 9602
Description: A characterization of Grothendieck universes, part 2. (Contributed by Mario Carneiro, 24-Jun-2013.)
Hypothesis
Ref Expression
gruina.1 𝐴 = (𝑈 ∩ On)
Assertion
Ref Expression
grur1 ((𝑈 ∈ Univ ∧ 𝑈 (𝑅1 “ On)) → 𝑈 = (𝑅1𝐴))

Proof of Theorem grur1
Dummy variables 𝑥 𝑦 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 nss 3648 . . . . 5 𝑈 ⊆ (𝑅1𝐴) ↔ ∃𝑥(𝑥𝑈 ∧ ¬ 𝑥 ∈ (𝑅1𝐴)))
2 fveq2 6158 . . . . . . . . . . . 12 (𝑦 = 𝑥 → (rank‘𝑦) = (rank‘𝑥))
32eqeq1d 2623 . . . . . . . . . . 11 (𝑦 = 𝑥 → ((rank‘𝑦) = 𝐴 ↔ (rank‘𝑥) = 𝐴))
43rspcev 3299 . . . . . . . . . 10 ((𝑥𝑈 ∧ (rank‘𝑥) = 𝐴) → ∃𝑦𝑈 (rank‘𝑦) = 𝐴)
54ex 450 . . . . . . . . 9 (𝑥𝑈 → ((rank‘𝑥) = 𝐴 → ∃𝑦𝑈 (rank‘𝑦) = 𝐴))
65ad2antrl 763 . . . . . . . 8 (((𝑈 ∈ Univ ∧ 𝑈 (𝑅1 “ On)) ∧ (𝑥𝑈 ∧ ¬ 𝑥 ∈ (𝑅1𝐴))) → ((rank‘𝑥) = 𝐴 → ∃𝑦𝑈 (rank‘𝑦) = 𝐴))
7 simplr 791 . . . . . . . . . . . 12 (((𝑈 ∈ Univ ∧ 𝑈 (𝑅1 “ On)) ∧ (𝑥𝑈 ∧ ¬ 𝑥 ∈ (𝑅1𝐴))) → 𝑈 (𝑅1 “ On))
8 simprl 793 . . . . . . . . . . . 12 (((𝑈 ∈ Univ ∧ 𝑈 (𝑅1 “ On)) ∧ (𝑥𝑈 ∧ ¬ 𝑥 ∈ (𝑅1𝐴))) → 𝑥𝑈)
9 r1elssi 8628 . . . . . . . . . . . . 13 (𝑈 (𝑅1 “ On) → 𝑈 (𝑅1 “ On))
109sseld 3587 . . . . . . . . . . . 12 (𝑈 (𝑅1 “ On) → (𝑥𝑈𝑥 (𝑅1 “ On)))
117, 8, 10sylc 65 . . . . . . . . . . 11 (((𝑈 ∈ Univ ∧ 𝑈 (𝑅1 “ On)) ∧ (𝑥𝑈 ∧ ¬ 𝑥 ∈ (𝑅1𝐴))) → 𝑥 (𝑅1 “ On))
12 tcrank 8707 . . . . . . . . . . 11 (𝑥 (𝑅1 “ On) → (rank‘𝑥) = (rank “ (TC‘𝑥)))
1311, 12syl 17 . . . . . . . . . 10 (((𝑈 ∈ Univ ∧ 𝑈 (𝑅1 “ On)) ∧ (𝑥𝑈 ∧ ¬ 𝑥 ∈ (𝑅1𝐴))) → (rank‘𝑥) = (rank “ (TC‘𝑥)))
1413eleq2d 2684 . . . . . . . . 9 (((𝑈 ∈ Univ ∧ 𝑈 (𝑅1 “ On)) ∧ (𝑥𝑈 ∧ ¬ 𝑥 ∈ (𝑅1𝐴))) → (𝐴 ∈ (rank‘𝑥) ↔ 𝐴 ∈ (rank “ (TC‘𝑥))))
15 gruelss 9576 . . . . . . . . . . . 12 ((𝑈 ∈ Univ ∧ 𝑥𝑈) → 𝑥𝑈)
16 grutr 9575 . . . . . . . . . . . . 13 (𝑈 ∈ Univ → Tr 𝑈)
1716adantr 481 . . . . . . . . . . . 12 ((𝑈 ∈ Univ ∧ 𝑥𝑈) → Tr 𝑈)
18 vex 3193 . . . . . . . . . . . . 13 𝑥 ∈ V
19 tcmin 8577 . . . . . . . . . . . . 13 (𝑥 ∈ V → ((𝑥𝑈 ∧ Tr 𝑈) → (TC‘𝑥) ⊆ 𝑈))
2018, 19ax-mp 5 . . . . . . . . . . . 12 ((𝑥𝑈 ∧ Tr 𝑈) → (TC‘𝑥) ⊆ 𝑈)
2115, 17, 20syl2anc 692 . . . . . . . . . . 11 ((𝑈 ∈ Univ ∧ 𝑥𝑈) → (TC‘𝑥) ⊆ 𝑈)
22 rankf 8617 . . . . . . . . . . . . 13 rank: (𝑅1 “ On)⟶On
23 ffun 6015 . . . . . . . . . . . . 13 (rank: (𝑅1 “ On)⟶On → Fun rank)
2422, 23ax-mp 5 . . . . . . . . . . . 12 Fun rank
25 fvelima 6215 . . . . . . . . . . . 12 ((Fun rank ∧ 𝐴 ∈ (rank “ (TC‘𝑥))) → ∃𝑦 ∈ (TC‘𝑥)(rank‘𝑦) = 𝐴)
2624, 25mpan 705 . . . . . . . . . . 11 (𝐴 ∈ (rank “ (TC‘𝑥)) → ∃𝑦 ∈ (TC‘𝑥)(rank‘𝑦) = 𝐴)
27 ssrexv 3652 . . . . . . . . . . 11 ((TC‘𝑥) ⊆ 𝑈 → (∃𝑦 ∈ (TC‘𝑥)(rank‘𝑦) = 𝐴 → ∃𝑦𝑈 (rank‘𝑦) = 𝐴))
2821, 26, 27syl2im 40 . . . . . . . . . 10 ((𝑈 ∈ Univ ∧ 𝑥𝑈) → (𝐴 ∈ (rank “ (TC‘𝑥)) → ∃𝑦𝑈 (rank‘𝑦) = 𝐴))
2928ad2ant2r 782 . . . . . . . . 9 (((𝑈 ∈ Univ ∧ 𝑈 (𝑅1 “ On)) ∧ (𝑥𝑈 ∧ ¬ 𝑥 ∈ (𝑅1𝐴))) → (𝐴 ∈ (rank “ (TC‘𝑥)) → ∃𝑦𝑈 (rank‘𝑦) = 𝐴))
3014, 29sylbid 230 . . . . . . . 8 (((𝑈 ∈ Univ ∧ 𝑈 (𝑅1 “ On)) ∧ (𝑥𝑈 ∧ ¬ 𝑥 ∈ (𝑅1𝐴))) → (𝐴 ∈ (rank‘𝑥) → ∃𝑦𝑈 (rank‘𝑦) = 𝐴))
31 simprr 795 . . . . . . . . . 10 (((𝑈 ∈ Univ ∧ 𝑈 (𝑅1 “ On)) ∧ (𝑥𝑈 ∧ ¬ 𝑥 ∈ (𝑅1𝐴))) → ¬ 𝑥 ∈ (𝑅1𝐴))
32 ne0i 3903 . . . . . . . . . . . . . . 15 (𝑥𝑈𝑈 ≠ ∅)
33 gruina.1 . . . . . . . . . . . . . . . 16 𝐴 = (𝑈 ∩ On)
3433gruina 9600 . . . . . . . . . . . . . . 15 ((𝑈 ∈ Univ ∧ 𝑈 ≠ ∅) → 𝐴 ∈ Inacc)
3532, 34sylan2 491 . . . . . . . . . . . . . 14 ((𝑈 ∈ Univ ∧ 𝑥𝑈) → 𝐴 ∈ Inacc)
36 inawina 9472 . . . . . . . . . . . . . 14 (𝐴 ∈ Inacc → 𝐴 ∈ Inaccw)
37 winaon 9470 . . . . . . . . . . . . . 14 (𝐴 ∈ Inaccw𝐴 ∈ On)
3835, 36, 373syl 18 . . . . . . . . . . . . 13 ((𝑈 ∈ Univ ∧ 𝑥𝑈) → 𝐴 ∈ On)
39 r1fnon 8590 . . . . . . . . . . . . . 14 𝑅1 Fn On
40 fndm 5958 . . . . . . . . . . . . . 14 (𝑅1 Fn On → dom 𝑅1 = On)
4139, 40ax-mp 5 . . . . . . . . . . . . 13 dom 𝑅1 = On
4238, 41syl6eleqr 2709 . . . . . . . . . . . 12 ((𝑈 ∈ Univ ∧ 𝑥𝑈) → 𝐴 ∈ dom 𝑅1)
4342ad2ant2r 782 . . . . . . . . . . 11 (((𝑈 ∈ Univ ∧ 𝑈 (𝑅1 “ On)) ∧ (𝑥𝑈 ∧ ¬ 𝑥 ∈ (𝑅1𝐴))) → 𝐴 ∈ dom 𝑅1)
44 rankr1ag 8625 . . . . . . . . . . 11 ((𝑥 (𝑅1 “ On) ∧ 𝐴 ∈ dom 𝑅1) → (𝑥 ∈ (𝑅1𝐴) ↔ (rank‘𝑥) ∈ 𝐴))
4511, 43, 44syl2anc 692 . . . . . . . . . 10 (((𝑈 ∈ Univ ∧ 𝑈 (𝑅1 “ On)) ∧ (𝑥𝑈 ∧ ¬ 𝑥 ∈ (𝑅1𝐴))) → (𝑥 ∈ (𝑅1𝐴) ↔ (rank‘𝑥) ∈ 𝐴))
4631, 45mtbid 314 . . . . . . . . 9 (((𝑈 ∈ Univ ∧ 𝑈 (𝑅1 “ On)) ∧ (𝑥𝑈 ∧ ¬ 𝑥 ∈ (𝑅1𝐴))) → ¬ (rank‘𝑥) ∈ 𝐴)
47 rankon 8618 . . . . . . . . . . . . 13 (rank‘𝑥) ∈ On
48 eloni 5702 . . . . . . . . . . . . . 14 ((rank‘𝑥) ∈ On → Ord (rank‘𝑥))
49 eloni 5702 . . . . . . . . . . . . . 14 (𝐴 ∈ On → Ord 𝐴)
50 ordtri3or 5724 . . . . . . . . . . . . . 14 ((Ord (rank‘𝑥) ∧ Ord 𝐴) → ((rank‘𝑥) ∈ 𝐴 ∨ (rank‘𝑥) = 𝐴𝐴 ∈ (rank‘𝑥)))
5148, 49, 50syl2an 494 . . . . . . . . . . . . 13 (((rank‘𝑥) ∈ On ∧ 𝐴 ∈ On) → ((rank‘𝑥) ∈ 𝐴 ∨ (rank‘𝑥) = 𝐴𝐴 ∈ (rank‘𝑥)))
5247, 38, 51sylancr 694 . . . . . . . . . . . 12 ((𝑈 ∈ Univ ∧ 𝑥𝑈) → ((rank‘𝑥) ∈ 𝐴 ∨ (rank‘𝑥) = 𝐴𝐴 ∈ (rank‘𝑥)))
53 3orass 1039 . . . . . . . . . . . 12 (((rank‘𝑥) ∈ 𝐴 ∨ (rank‘𝑥) = 𝐴𝐴 ∈ (rank‘𝑥)) ↔ ((rank‘𝑥) ∈ 𝐴 ∨ ((rank‘𝑥) = 𝐴𝐴 ∈ (rank‘𝑥))))
5452, 53sylib 208 . . . . . . . . . . 11 ((𝑈 ∈ Univ ∧ 𝑥𝑈) → ((rank‘𝑥) ∈ 𝐴 ∨ ((rank‘𝑥) = 𝐴𝐴 ∈ (rank‘𝑥))))
5554ord 392 . . . . . . . . . 10 ((𝑈 ∈ Univ ∧ 𝑥𝑈) → (¬ (rank‘𝑥) ∈ 𝐴 → ((rank‘𝑥) = 𝐴𝐴 ∈ (rank‘𝑥))))
5655ad2ant2r 782 . . . . . . . . 9 (((𝑈 ∈ Univ ∧ 𝑈 (𝑅1 “ On)) ∧ (𝑥𝑈 ∧ ¬ 𝑥 ∈ (𝑅1𝐴))) → (¬ (rank‘𝑥) ∈ 𝐴 → ((rank‘𝑥) = 𝐴𝐴 ∈ (rank‘𝑥))))
5746, 56mpd 15 . . . . . . . 8 (((𝑈 ∈ Univ ∧ 𝑈 (𝑅1 “ On)) ∧ (𝑥𝑈 ∧ ¬ 𝑥 ∈ (𝑅1𝐴))) → ((rank‘𝑥) = 𝐴𝐴 ∈ (rank‘𝑥)))
586, 30, 57mpjaod 396 . . . . . . 7 (((𝑈 ∈ Univ ∧ 𝑈 (𝑅1 “ On)) ∧ (𝑥𝑈 ∧ ¬ 𝑥 ∈ (𝑅1𝐴))) → ∃𝑦𝑈 (rank‘𝑦) = 𝐴)
5958ex 450 . . . . . 6 ((𝑈 ∈ Univ ∧ 𝑈 (𝑅1 “ On)) → ((𝑥𝑈 ∧ ¬ 𝑥 ∈ (𝑅1𝐴)) → ∃𝑦𝑈 (rank‘𝑦) = 𝐴))
6059exlimdv 1858 . . . . 5 ((𝑈 ∈ Univ ∧ 𝑈 (𝑅1 “ On)) → (∃𝑥(𝑥𝑈 ∧ ¬ 𝑥 ∈ (𝑅1𝐴)) → ∃𝑦𝑈 (rank‘𝑦) = 𝐴))
611, 60syl5bi 232 . . . 4 ((𝑈 ∈ Univ ∧ 𝑈 (𝑅1 “ On)) → (¬ 𝑈 ⊆ (𝑅1𝐴) → ∃𝑦𝑈 (rank‘𝑦) = 𝐴))
62 simpll 789 . . . . . . 7 (((𝑈 ∈ Univ ∧ 𝑈 (𝑅1 “ On)) ∧ (𝑦𝑈 ∧ (rank‘𝑦) = 𝐴)) → 𝑈 ∈ Univ)
63 ne0i 3903 . . . . . . . . . 10 (𝑦𝑈𝑈 ≠ ∅)
6463, 34sylan2 491 . . . . . . . . 9 ((𝑈 ∈ Univ ∧ 𝑦𝑈) → 𝐴 ∈ Inacc)
6564ad2ant2r 782 . . . . . . . 8 (((𝑈 ∈ Univ ∧ 𝑈 (𝑅1 “ On)) ∧ (𝑦𝑈 ∧ (rank‘𝑦) = 𝐴)) → 𝐴 ∈ Inacc)
6665, 36, 373syl 18 . . . . . . 7 (((𝑈 ∈ Univ ∧ 𝑈 (𝑅1 “ On)) ∧ (𝑦𝑈 ∧ (rank‘𝑦) = 𝐴)) → 𝐴 ∈ On)
67 simprl 793 . . . . . . 7 (((𝑈 ∈ Univ ∧ 𝑈 (𝑅1 “ On)) ∧ (𝑦𝑈 ∧ (rank‘𝑦) = 𝐴)) → 𝑦𝑈)
68 fveq2 6158 . . . . . . . . . 10 ((rank‘𝑦) = 𝐴 → (cf‘(rank‘𝑦)) = (cf‘𝐴))
6968ad2antll 764 . . . . . . . . 9 (((𝑈 ∈ Univ ∧ 𝑈 (𝑅1 “ On)) ∧ (𝑦𝑈 ∧ (rank‘𝑦) = 𝐴)) → (cf‘(rank‘𝑦)) = (cf‘𝐴))
70 elina 9469 . . . . . . . . . . 11 (𝐴 ∈ Inacc ↔ (𝐴 ≠ ∅ ∧ (cf‘𝐴) = 𝐴 ∧ ∀𝑥𝐴 𝒫 𝑥𝐴))
7170simp2bi 1075 . . . . . . . . . 10 (𝐴 ∈ Inacc → (cf‘𝐴) = 𝐴)
7265, 71syl 17 . . . . . . . . 9 (((𝑈 ∈ Univ ∧ 𝑈 (𝑅1 “ On)) ∧ (𝑦𝑈 ∧ (rank‘𝑦) = 𝐴)) → (cf‘𝐴) = 𝐴)
7369, 72eqtrd 2655 . . . . . . . 8 (((𝑈 ∈ Univ ∧ 𝑈 (𝑅1 “ On)) ∧ (𝑦𝑈 ∧ (rank‘𝑦) = 𝐴)) → (cf‘(rank‘𝑦)) = 𝐴)
74 rankcf 9559 . . . . . . . . 9 ¬ 𝑦 ≺ (cf‘(rank‘𝑦))
75 fvex 6168 . . . . . . . . . 10 (cf‘(rank‘𝑦)) ∈ V
76 vex 3193 . . . . . . . . . 10 𝑦 ∈ V
77 domtri 9338 . . . . . . . . . 10 (((cf‘(rank‘𝑦)) ∈ V ∧ 𝑦 ∈ V) → ((cf‘(rank‘𝑦)) ≼ 𝑦 ↔ ¬ 𝑦 ≺ (cf‘(rank‘𝑦))))
7875, 76, 77mp2an 707 . . . . . . . . 9 ((cf‘(rank‘𝑦)) ≼ 𝑦 ↔ ¬ 𝑦 ≺ (cf‘(rank‘𝑦)))
7974, 78mpbir 221 . . . . . . . 8 (cf‘(rank‘𝑦)) ≼ 𝑦
8073, 79syl6eqbrr 4663 . . . . . . 7 (((𝑈 ∈ Univ ∧ 𝑈 (𝑅1 “ On)) ∧ (𝑦𝑈 ∧ (rank‘𝑦) = 𝐴)) → 𝐴𝑦)
81 grudomon 9599 . . . . . . 7 ((𝑈 ∈ Univ ∧ 𝐴 ∈ On ∧ (𝑦𝑈𝐴𝑦)) → 𝐴𝑈)
8262, 66, 67, 80, 81syl112anc 1327 . . . . . 6 (((𝑈 ∈ Univ ∧ 𝑈 (𝑅1 “ On)) ∧ (𝑦𝑈 ∧ (rank‘𝑦) = 𝐴)) → 𝐴𝑈)
83 elin 3780 . . . . . . . . 9 (𝐴 ∈ (𝑈 ∩ On) ↔ (𝐴𝑈𝐴 ∈ On))
8483biimpri 218 . . . . . . . 8 ((𝐴𝑈𝐴 ∈ On) → 𝐴 ∈ (𝑈 ∩ On))
8584, 33syl6eleqr 2709 . . . . . . 7 ((𝐴𝑈𝐴 ∈ On) → 𝐴𝐴)
86 ordirr 5710 . . . . . . . . 9 (Ord 𝐴 → ¬ 𝐴𝐴)
8749, 86syl 17 . . . . . . . 8 (𝐴 ∈ On → ¬ 𝐴𝐴)
8887adantl 482 . . . . . . 7 ((𝐴𝑈𝐴 ∈ On) → ¬ 𝐴𝐴)
8985, 88pm2.21dd 186 . . . . . 6 ((𝐴𝑈𝐴 ∈ On) → 𝑈 ⊆ (𝑅1𝐴))
9082, 66, 89syl2anc 692 . . . . 5 (((𝑈 ∈ Univ ∧ 𝑈 (𝑅1 “ On)) ∧ (𝑦𝑈 ∧ (rank‘𝑦) = 𝐴)) → 𝑈 ⊆ (𝑅1𝐴))
9190rexlimdvaa 3027 . . . 4 ((𝑈 ∈ Univ ∧ 𝑈 (𝑅1 “ On)) → (∃𝑦𝑈 (rank‘𝑦) = 𝐴𝑈 ⊆ (𝑅1𝐴)))
9261, 91syld 47 . . 3 ((𝑈 ∈ Univ ∧ 𝑈 (𝑅1 “ On)) → (¬ 𝑈 ⊆ (𝑅1𝐴) → 𝑈 ⊆ (𝑅1𝐴)))
9392pm2.18d 124 . 2 ((𝑈 ∈ Univ ∧ 𝑈 (𝑅1 “ On)) → 𝑈 ⊆ (𝑅1𝐴))
9433grur1a 9601 . . 3 (𝑈 ∈ Univ → (𝑅1𝐴) ⊆ 𝑈)
9594adantr 481 . 2 ((𝑈 ∈ Univ ∧ 𝑈 (𝑅1 “ On)) → (𝑅1𝐴) ⊆ 𝑈)
9693, 95eqssd 3605 1 ((𝑈 ∈ Univ ∧ 𝑈 (𝑅1 “ On)) → 𝑈 = (𝑅1𝐴))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 196  wo 383  wa 384  w3o 1035   = wceq 1480  wex 1701  wcel 1987  wne 2790  wral 2908  wrex 2909  Vcvv 3190  cin 3559  wss 3560  c0 3897  𝒫 cpw 4136   cuni 4409   class class class wbr 4623  Tr wtr 4722  dom cdm 5084  cima 5087  Ord word 5691  Oncon0 5692  Fun wfun 5851   Fn wfn 5852  wf 5853  cfv 5857  cdom 7913  csdm 7914  TCctc 8572  𝑅1cr1 8585  rankcrnk 8586  cfccf 8723  Inaccwcwina 9464  Inacccina 9465  Univcgru 9572
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1719  ax-4 1734  ax-5 1836  ax-6 1885  ax-7 1932  ax-8 1989  ax-9 1996  ax-10 2016  ax-11 2031  ax-12 2044  ax-13 2245  ax-ext 2601  ax-rep 4741  ax-sep 4751  ax-nul 4759  ax-pow 4813  ax-pr 4877  ax-un 6914  ax-inf2 8498  ax-ac2 9245
This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3or 1037  df-3an 1038  df-tru 1483  df-ex 1702  df-nf 1707  df-sb 1878  df-eu 2473  df-mo 2474  df-clab 2608  df-cleq 2614  df-clel 2617  df-nfc 2750  df-ne 2791  df-ral 2913  df-rex 2914  df-reu 2915  df-rmo 2916  df-rab 2917  df-v 3192  df-sbc 3423  df-csb 3520  df-dif 3563  df-un 3565  df-in 3567  df-ss 3574  df-pss 3576  df-nul 3898  df-if 4065  df-pw 4138  df-sn 4156  df-pr 4158  df-tp 4160  df-op 4162  df-uni 4410  df-int 4448  df-iun 4494  df-iin 4495  df-br 4624  df-opab 4684  df-mpt 4685  df-tr 4723  df-eprel 4995  df-id 4999  df-po 5005  df-so 5006  df-fr 5043  df-se 5044  df-we 5045  df-xp 5090  df-rel 5091  df-cnv 5092  df-co 5093  df-dm 5094  df-rn 5095  df-res 5096  df-ima 5097  df-pred 5649  df-ord 5695  df-on 5696  df-lim 5697  df-suc 5698  df-iota 5820  df-fun 5859  df-fn 5860  df-f 5861  df-f1 5862  df-fo 5863  df-f1o 5864  df-fv 5865  df-isom 5866  df-riota 6576  df-ov 6618  df-oprab 6619  df-mpt2 6620  df-om 7028  df-1st 7128  df-2nd 7129  df-wrecs 7367  df-recs 7428  df-rdg 7466  df-1o 7520  df-er 7702  df-map 7819  df-en 7916  df-dom 7917  df-sdom 7918  df-fin 7919  df-tc 8573  df-r1 8587  df-rank 8588  df-card 8725  df-cf 8727  df-acn 8728  df-ac 8899  df-wina 9466  df-ina 9467  df-gru 9573
This theorem is referenced by:  grutsk  9604  bj-grur1  32723
  Copyright terms: Public domain W3C validator