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Theorem rankcf 10188
Description: Any set must be at least as large as the cofinality of its rank, because the ranks of the elements of 𝐴 form a cofinal map into (rank‘𝐴). (Contributed by Mario Carneiro, 27-May-2013.)
Assertion
Ref Expression
rankcf ¬ 𝐴 ≺ (cf‘(rank‘𝐴))

Proof of Theorem rankcf
Dummy variables 𝑤 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 rankon 9213 . . 3 (rank‘𝐴) ∈ On
2 onzsl 7549 . . 3 ((rank‘𝐴) ∈ On ↔ ((rank‘𝐴) = ∅ ∨ ∃𝑥 ∈ On (rank‘𝐴) = suc 𝑥 ∨ ((rank‘𝐴) ∈ V ∧ Lim (rank‘𝐴))))
31, 2mpbi 231 . 2 ((rank‘𝐴) = ∅ ∨ ∃𝑥 ∈ On (rank‘𝐴) = suc 𝑥 ∨ ((rank‘𝐴) ∈ V ∧ Lim (rank‘𝐴)))
4 sdom0 8638 . . . 4 ¬ 𝐴 ≺ ∅
5 fveq2 6667 . . . . . 6 ((rank‘𝐴) = ∅ → (cf‘(rank‘𝐴)) = (cf‘∅))
6 cf0 9662 . . . . . 6 (cf‘∅) = ∅
75, 6syl6eq 2877 . . . . 5 ((rank‘𝐴) = ∅ → (cf‘(rank‘𝐴)) = ∅)
87breq2d 5075 . . . 4 ((rank‘𝐴) = ∅ → (𝐴 ≺ (cf‘(rank‘𝐴)) ↔ 𝐴 ≺ ∅))
94, 8mtbiri 328 . . 3 ((rank‘𝐴) = ∅ → ¬ 𝐴 ≺ (cf‘(rank‘𝐴)))
10 fveq2 6667 . . . . . . 7 ((rank‘𝐴) = suc 𝑥 → (cf‘(rank‘𝐴)) = (cf‘suc 𝑥))
11 cfsuc 9668 . . . . . . 7 (𝑥 ∈ On → (cf‘suc 𝑥) = 1o)
1210, 11sylan9eqr 2883 . . . . . 6 ((𝑥 ∈ On ∧ (rank‘𝐴) = suc 𝑥) → (cf‘(rank‘𝐴)) = 1o)
13 nsuceq0 6269 . . . . . . . . 9 suc 𝑥 ≠ ∅
14 neeq1 3083 . . . . . . . . 9 ((rank‘𝐴) = suc 𝑥 → ((rank‘𝐴) ≠ ∅ ↔ suc 𝑥 ≠ ∅))
1513, 14mpbiri 259 . . . . . . . 8 ((rank‘𝐴) = suc 𝑥 → (rank‘𝐴) ≠ ∅)
16 fveq2 6667 . . . . . . . . . . 11 (𝐴 = ∅ → (rank‘𝐴) = (rank‘∅))
17 0elon 6242 . . . . . . . . . . . . 13 ∅ ∈ On
18 r1fnon 9185 . . . . . . . . . . . . . 14 𝑅1 Fn On
19 fndm 6452 . . . . . . . . . . . . . 14 (𝑅1 Fn On → dom 𝑅1 = On)
2018, 19ax-mp 5 . . . . . . . . . . . . 13 dom 𝑅1 = On
2117, 20eleqtrri 2917 . . . . . . . . . . . 12 ∅ ∈ dom 𝑅1
22 rankonid 9247 . . . . . . . . . . . 12 (∅ ∈ dom 𝑅1 ↔ (rank‘∅) = ∅)
2321, 22mpbi 231 . . . . . . . . . . 11 (rank‘∅) = ∅
2416, 23syl6eq 2877 . . . . . . . . . 10 (𝐴 = ∅ → (rank‘𝐴) = ∅)
2524necon3i 3053 . . . . . . . . 9 ((rank‘𝐴) ≠ ∅ → 𝐴 ≠ ∅)
26 rankvaln 9217 . . . . . . . . . . 11 𝐴 (𝑅1 “ On) → (rank‘𝐴) = ∅)
2726necon1ai 3048 . . . . . . . . . 10 ((rank‘𝐴) ≠ ∅ → 𝐴 (𝑅1 “ On))
28 breq2 5067 . . . . . . . . . . 11 (𝑦 = 𝐴 → (1o𝑦 ↔ 1o𝐴))
29 neeq1 3083 . . . . . . . . . . 11 (𝑦 = 𝐴 → (𝑦 ≠ ∅ ↔ 𝐴 ≠ ∅))
30 0sdom1dom 8705 . . . . . . . . . . . 12 (∅ ≺ 𝑦 ↔ 1o𝑦)
31 vex 3503 . . . . . . . . . . . . 13 𝑦 ∈ V
32310sdom 8637 . . . . . . . . . . . 12 (∅ ≺ 𝑦𝑦 ≠ ∅)
3330, 32bitr3i 278 . . . . . . . . . . 11 (1o𝑦𝑦 ≠ ∅)
3428, 29, 33vtoclbg 3574 . . . . . . . . . 10 (𝐴 (𝑅1 “ On) → (1o𝐴𝐴 ≠ ∅))
3527, 34syl 17 . . . . . . . . 9 ((rank‘𝐴) ≠ ∅ → (1o𝐴𝐴 ≠ ∅))
3625, 35mpbird 258 . . . . . . . 8 ((rank‘𝐴) ≠ ∅ → 1o𝐴)
3715, 36syl 17 . . . . . . 7 ((rank‘𝐴) = suc 𝑥 → 1o𝐴)
3837adantl 482 . . . . . 6 ((𝑥 ∈ On ∧ (rank‘𝐴) = suc 𝑥) → 1o𝐴)
3912, 38eqbrtrd 5085 . . . . 5 ((𝑥 ∈ On ∧ (rank‘𝐴) = suc 𝑥) → (cf‘(rank‘𝐴)) ≼ 𝐴)
4039rexlimiva 3286 . . . 4 (∃𝑥 ∈ On (rank‘𝐴) = suc 𝑥 → (cf‘(rank‘𝐴)) ≼ 𝐴)
41 domnsym 8632 . . . 4 ((cf‘(rank‘𝐴)) ≼ 𝐴 → ¬ 𝐴 ≺ (cf‘(rank‘𝐴)))
4240, 41syl 17 . . 3 (∃𝑥 ∈ On (rank‘𝐴) = suc 𝑥 → ¬ 𝐴 ≺ (cf‘(rank‘𝐴)))
43 nlim0 6247 . . . . . . . . . . . . . . . . 17 ¬ Lim ∅
44 limeq 6201 . . . . . . . . . . . . . . . . 17 ((rank‘𝐴) = ∅ → (Lim (rank‘𝐴) ↔ Lim ∅))
4543, 44mtbiri 328 . . . . . . . . . . . . . . . 16 ((rank‘𝐴) = ∅ → ¬ Lim (rank‘𝐴))
4626, 45syl 17 . . . . . . . . . . . . . . 15 𝐴 (𝑅1 “ On) → ¬ Lim (rank‘𝐴))
4746con4i 114 . . . . . . . . . . . . . 14 (Lim (rank‘𝐴) → 𝐴 (𝑅1 “ On))
48 r1elssi 9223 . . . . . . . . . . . . . 14 (𝐴 (𝑅1 “ On) → 𝐴 (𝑅1 “ On))
4947, 48syl 17 . . . . . . . . . . . . 13 (Lim (rank‘𝐴) → 𝐴 (𝑅1 “ On))
5049sselda 3971 . . . . . . . . . . . 12 ((Lim (rank‘𝐴) ∧ 𝑥𝐴) → 𝑥 (𝑅1 “ On))
51 ranksnb 9245 . . . . . . . . . . . 12 (𝑥 (𝑅1 “ On) → (rank‘{𝑥}) = suc (rank‘𝑥))
5250, 51syl 17 . . . . . . . . . . 11 ((Lim (rank‘𝐴) ∧ 𝑥𝐴) → (rank‘{𝑥}) = suc (rank‘𝑥))
53 rankelb 9242 . . . . . . . . . . . . . 14 (𝐴 (𝑅1 “ On) → (𝑥𝐴 → (rank‘𝑥) ∈ (rank‘𝐴)))
5447, 53syl 17 . . . . . . . . . . . . 13 (Lim (rank‘𝐴) → (𝑥𝐴 → (rank‘𝑥) ∈ (rank‘𝐴)))
55 limsuc 7552 . . . . . . . . . . . . 13 (Lim (rank‘𝐴) → ((rank‘𝑥) ∈ (rank‘𝐴) ↔ suc (rank‘𝑥) ∈ (rank‘𝐴)))
5654, 55sylibd 240 . . . . . . . . . . . 12 (Lim (rank‘𝐴) → (𝑥𝐴 → suc (rank‘𝑥) ∈ (rank‘𝐴)))
5756imp 407 . . . . . . . . . . 11 ((Lim (rank‘𝐴) ∧ 𝑥𝐴) → suc (rank‘𝑥) ∈ (rank‘𝐴))
5852, 57eqeltrd 2918 . . . . . . . . . 10 ((Lim (rank‘𝐴) ∧ 𝑥𝐴) → (rank‘{𝑥}) ∈ (rank‘𝐴))
59 eleq1a 2913 . . . . . . . . . 10 ((rank‘{𝑥}) ∈ (rank‘𝐴) → (𝑤 = (rank‘{𝑥}) → 𝑤 ∈ (rank‘𝐴)))
6058, 59syl 17 . . . . . . . . 9 ((Lim (rank‘𝐴) ∧ 𝑥𝐴) → (𝑤 = (rank‘{𝑥}) → 𝑤 ∈ (rank‘𝐴)))
6160rexlimdva 3289 . . . . . . . 8 (Lim (rank‘𝐴) → (∃𝑥𝐴 𝑤 = (rank‘{𝑥}) → 𝑤 ∈ (rank‘𝐴)))
6261abssdv 4049 . . . . . . 7 (Lim (rank‘𝐴) → {𝑤 ∣ ∃𝑥𝐴 𝑤 = (rank‘{𝑥})} ⊆ (rank‘𝐴))
63 snex 5328 . . . . . . . . . . . . 13 {𝑥} ∈ V
6463dfiun2 4955 . . . . . . . . . . . 12 𝑥𝐴 {𝑥} = {𝑦 ∣ ∃𝑥𝐴 𝑦 = {𝑥}}
65 iunid 4981 . . . . . . . . . . . 12 𝑥𝐴 {𝑥} = 𝐴
6664, 65eqtr3i 2851 . . . . . . . . . . 11 {𝑦 ∣ ∃𝑥𝐴 𝑦 = {𝑥}} = 𝐴
6766fveq2i 6670 . . . . . . . . . 10 (rank‘ {𝑦 ∣ ∃𝑥𝐴 𝑦 = {𝑥}}) = (rank‘𝐴)
6848sselda 3971 . . . . . . . . . . . . . . 15 ((𝐴 (𝑅1 “ On) ∧ 𝑥𝐴) → 𝑥 (𝑅1 “ On))
69 snwf 9227 . . . . . . . . . . . . . . 15 (𝑥 (𝑅1 “ On) → {𝑥} ∈ (𝑅1 “ On))
70 eleq1a 2913 . . . . . . . . . . . . . . 15 ({𝑥} ∈ (𝑅1 “ On) → (𝑦 = {𝑥} → 𝑦 (𝑅1 “ On)))
7168, 69, 703syl 18 . . . . . . . . . . . . . 14 ((𝐴 (𝑅1 “ On) ∧ 𝑥𝐴) → (𝑦 = {𝑥} → 𝑦 (𝑅1 “ On)))
7271rexlimdva 3289 . . . . . . . . . . . . 13 (𝐴 (𝑅1 “ On) → (∃𝑥𝐴 𝑦 = {𝑥} → 𝑦 (𝑅1 “ On)))
7372abssdv 4049 . . . . . . . . . . . 12 (𝐴 (𝑅1 “ On) → {𝑦 ∣ ∃𝑥𝐴 𝑦 = {𝑥}} ⊆ (𝑅1 “ On))
74 abrexexg 7653 . . . . . . . . . . . . 13 (𝐴 (𝑅1 “ On) → {𝑦 ∣ ∃𝑥𝐴 𝑦 = {𝑥}} ∈ V)
75 eleq1 2905 . . . . . . . . . . . . . 14 (𝑧 = {𝑦 ∣ ∃𝑥𝐴 𝑦 = {𝑥}} → (𝑧 (𝑅1 “ On) ↔ {𝑦 ∣ ∃𝑥𝐴 𝑦 = {𝑥}} ∈ (𝑅1 “ On)))
76 sseq1 3996 . . . . . . . . . . . . . 14 (𝑧 = {𝑦 ∣ ∃𝑥𝐴 𝑦 = {𝑥}} → (𝑧 (𝑅1 “ On) ↔ {𝑦 ∣ ∃𝑥𝐴 𝑦 = {𝑥}} ⊆ (𝑅1 “ On)))
77 vex 3503 . . . . . . . . . . . . . . 15 𝑧 ∈ V
7877r1elss 9224 . . . . . . . . . . . . . 14 (𝑧 (𝑅1 “ On) ↔ 𝑧 (𝑅1 “ On))
7975, 76, 78vtoclbg 3574 . . . . . . . . . . . . 13 ({𝑦 ∣ ∃𝑥𝐴 𝑦 = {𝑥}} ∈ V → ({𝑦 ∣ ∃𝑥𝐴 𝑦 = {𝑥}} ∈ (𝑅1 “ On) ↔ {𝑦 ∣ ∃𝑥𝐴 𝑦 = {𝑥}} ⊆ (𝑅1 “ On)))
8074, 79syl 17 . . . . . . . . . . . 12 (𝐴 (𝑅1 “ On) → ({𝑦 ∣ ∃𝑥𝐴 𝑦 = {𝑥}} ∈ (𝑅1 “ On) ↔ {𝑦 ∣ ∃𝑥𝐴 𝑦 = {𝑥}} ⊆ (𝑅1 “ On)))
8173, 80mpbird 258 . . . . . . . . . . 11 (𝐴 (𝑅1 “ On) → {𝑦 ∣ ∃𝑥𝐴 𝑦 = {𝑥}} ∈ (𝑅1 “ On))
82 rankuni2b 9271 . . . . . . . . . . 11 ({𝑦 ∣ ∃𝑥𝐴 𝑦 = {𝑥}} ∈ (𝑅1 “ On) → (rank‘ {𝑦 ∣ ∃𝑥𝐴 𝑦 = {𝑥}}) = 𝑧 ∈ {𝑦 ∣ ∃𝑥𝐴 𝑦 = {𝑥}} (rank‘𝑧))
8381, 82syl 17 . . . . . . . . . 10 (𝐴 (𝑅1 “ On) → (rank‘ {𝑦 ∣ ∃𝑥𝐴 𝑦 = {𝑥}}) = 𝑧 ∈ {𝑦 ∣ ∃𝑥𝐴 𝑦 = {𝑥}} (rank‘𝑧))
8467, 83syl5eqr 2875 . . . . . . . . 9 (𝐴 (𝑅1 “ On) → (rank‘𝐴) = 𝑧 ∈ {𝑦 ∣ ∃𝑥𝐴 𝑦 = {𝑥}} (rank‘𝑧))
85 fvex 6680 . . . . . . . . . . 11 (rank‘𝑧) ∈ V
8685dfiun2 4955 . . . . . . . . . 10 𝑧 ∈ {𝑦 ∣ ∃𝑥𝐴 𝑦 = {𝑥}} (rank‘𝑧) = {𝑤 ∣ ∃𝑧 ∈ {𝑦 ∣ ∃𝑥𝐴 𝑦 = {𝑥}}𝑤 = (rank‘𝑧)}
87 fveq2 6667 . . . . . . . . . . . 12 (𝑧 = {𝑥} → (rank‘𝑧) = (rank‘{𝑥}))
8863, 87abrexco 6997 . . . . . . . . . . 11 {𝑤 ∣ ∃𝑧 ∈ {𝑦 ∣ ∃𝑥𝐴 𝑦 = {𝑥}}𝑤 = (rank‘𝑧)} = {𝑤 ∣ ∃𝑥𝐴 𝑤 = (rank‘{𝑥})}
8988unieqi 4846 . . . . . . . . . 10 {𝑤 ∣ ∃𝑧 ∈ {𝑦 ∣ ∃𝑥𝐴 𝑦 = {𝑥}}𝑤 = (rank‘𝑧)} = {𝑤 ∣ ∃𝑥𝐴 𝑤 = (rank‘{𝑥})}
9086, 89eqtri 2849 . . . . . . . . 9 𝑧 ∈ {𝑦 ∣ ∃𝑥𝐴 𝑦 = {𝑥}} (rank‘𝑧) = {𝑤 ∣ ∃𝑥𝐴 𝑤 = (rank‘{𝑥})}
9184, 90syl6req 2878 . . . . . . . 8 (𝐴 (𝑅1 “ On) → {𝑤 ∣ ∃𝑥𝐴 𝑤 = (rank‘{𝑥})} = (rank‘𝐴))
9247, 91syl 17 . . . . . . 7 (Lim (rank‘𝐴) → {𝑤 ∣ ∃𝑥𝐴 𝑤 = (rank‘{𝑥})} = (rank‘𝐴))
93 fvex 6680 . . . . . . . 8 (rank‘𝐴) ∈ V
9493cfslb 9677 . . . . . . 7 ((Lim (rank‘𝐴) ∧ {𝑤 ∣ ∃𝑥𝐴 𝑤 = (rank‘{𝑥})} ⊆ (rank‘𝐴) ∧ {𝑤 ∣ ∃𝑥𝐴 𝑤 = (rank‘{𝑥})} = (rank‘𝐴)) → (cf‘(rank‘𝐴)) ≼ {𝑤 ∣ ∃𝑥𝐴 𝑤 = (rank‘{𝑥})})
9562, 92, 94mpd3an23 1456 . . . . . 6 (Lim (rank‘𝐴) → (cf‘(rank‘𝐴)) ≼ {𝑤 ∣ ∃𝑥𝐴 𝑤 = (rank‘{𝑥})})
96 2fveq3 6672 . . . . . . . . . 10 (𝑦 = 𝐴 → (cf‘(rank‘𝑦)) = (cf‘(rank‘𝐴)))
97 breq12 5068 . . . . . . . . . 10 ((𝑦 = 𝐴 ∧ (cf‘(rank‘𝑦)) = (cf‘(rank‘𝐴))) → (𝑦 ≺ (cf‘(rank‘𝑦)) ↔ 𝐴 ≺ (cf‘(rank‘𝐴))))
9896, 97mpdan 683 . . . . . . . . 9 (𝑦 = 𝐴 → (𝑦 ≺ (cf‘(rank‘𝑦)) ↔ 𝐴 ≺ (cf‘(rank‘𝐴))))
99 rexeq 3412 . . . . . . . . . . 11 (𝑦 = 𝐴 → (∃𝑥𝑦 𝑤 = (rank‘{𝑥}) ↔ ∃𝑥𝐴 𝑤 = (rank‘{𝑥})))
10099abbidv 2890 . . . . . . . . . 10 (𝑦 = 𝐴 → {𝑤 ∣ ∃𝑥𝑦 𝑤 = (rank‘{𝑥})} = {𝑤 ∣ ∃𝑥𝐴 𝑤 = (rank‘{𝑥})})
101 breq12 5068 . . . . . . . . . 10 (({𝑤 ∣ ∃𝑥𝑦 𝑤 = (rank‘{𝑥})} = {𝑤 ∣ ∃𝑥𝐴 𝑤 = (rank‘{𝑥})} ∧ 𝑦 = 𝐴) → ({𝑤 ∣ ∃𝑥𝑦 𝑤 = (rank‘{𝑥})} ≼ 𝑦 ↔ {𝑤 ∣ ∃𝑥𝐴 𝑤 = (rank‘{𝑥})} ≼ 𝐴))
102100, 101mpancom 684 . . . . . . . . 9 (𝑦 = 𝐴 → ({𝑤 ∣ ∃𝑥𝑦 𝑤 = (rank‘{𝑥})} ≼ 𝑦 ↔ {𝑤 ∣ ∃𝑥𝐴 𝑤 = (rank‘{𝑥})} ≼ 𝐴))
10398, 102imbi12d 346 . . . . . . . 8 (𝑦 = 𝐴 → ((𝑦 ≺ (cf‘(rank‘𝑦)) → {𝑤 ∣ ∃𝑥𝑦 𝑤 = (rank‘{𝑥})} ≼ 𝑦) ↔ (𝐴 ≺ (cf‘(rank‘𝐴)) → {𝑤 ∣ ∃𝑥𝐴 𝑤 = (rank‘{𝑥})} ≼ 𝐴)))
104 eqid 2826 . . . . . . . . . 10 (𝑥𝑦 ↦ (rank‘{𝑥})) = (𝑥𝑦 ↦ (rank‘{𝑥}))
105104rnmpt 5826 . . . . . . . . 9 ran (𝑥𝑦 ↦ (rank‘{𝑥})) = {𝑤 ∣ ∃𝑥𝑦 𝑤 = (rank‘{𝑥})}
106 cfon 9666 . . . . . . . . . . 11 (cf‘(rank‘𝑦)) ∈ On
107 sdomdom 8526 . . . . . . . . . . 11 (𝑦 ≺ (cf‘(rank‘𝑦)) → 𝑦 ≼ (cf‘(rank‘𝑦)))
108 ondomen 9452 . . . . . . . . . . 11 (((cf‘(rank‘𝑦)) ∈ On ∧ 𝑦 ≼ (cf‘(rank‘𝑦))) → 𝑦 ∈ dom card)
109106, 107, 108sylancr 587 . . . . . . . . . 10 (𝑦 ≺ (cf‘(rank‘𝑦)) → 𝑦 ∈ dom card)
110 fvex 6680 . . . . . . . . . . . 12 (rank‘{𝑥}) ∈ V
111110, 104fnmpti 6488 . . . . . . . . . . 11 (𝑥𝑦 ↦ (rank‘{𝑥})) Fn 𝑦
112 dffn4 6593 . . . . . . . . . . 11 ((𝑥𝑦 ↦ (rank‘{𝑥})) Fn 𝑦 ↔ (𝑥𝑦 ↦ (rank‘{𝑥})):𝑦onto→ran (𝑥𝑦 ↦ (rank‘{𝑥})))
113111, 112mpbi 231 . . . . . . . . . 10 (𝑥𝑦 ↦ (rank‘{𝑥})):𝑦onto→ran (𝑥𝑦 ↦ (rank‘{𝑥}))
114 fodomnum 9472 . . . . . . . . . 10 (𝑦 ∈ dom card → ((𝑥𝑦 ↦ (rank‘{𝑥})):𝑦onto→ran (𝑥𝑦 ↦ (rank‘{𝑥})) → ran (𝑥𝑦 ↦ (rank‘{𝑥})) ≼ 𝑦))
115109, 113, 114mpisyl 21 . . . . . . . . 9 (𝑦 ≺ (cf‘(rank‘𝑦)) → ran (𝑥𝑦 ↦ (rank‘{𝑥})) ≼ 𝑦)
116105, 115eqbrtrrid 5099 . . . . . . . 8 (𝑦 ≺ (cf‘(rank‘𝑦)) → {𝑤 ∣ ∃𝑥𝑦 𝑤 = (rank‘{𝑥})} ≼ 𝑦)
117103, 116vtoclg 3573 . . . . . . 7 (𝐴 (𝑅1 “ On) → (𝐴 ≺ (cf‘(rank‘𝐴)) → {𝑤 ∣ ∃𝑥𝐴 𝑤 = (rank‘{𝑥})} ≼ 𝐴))
11847, 117syl 17 . . . . . 6 (Lim (rank‘𝐴) → (𝐴 ≺ (cf‘(rank‘𝐴)) → {𝑤 ∣ ∃𝑥𝐴 𝑤 = (rank‘{𝑥})} ≼ 𝐴))
119 domtr 8551 . . . . . . 7 (((cf‘(rank‘𝐴)) ≼ {𝑤 ∣ ∃𝑥𝐴 𝑤 = (rank‘{𝑥})} ∧ {𝑤 ∣ ∃𝑥𝐴 𝑤 = (rank‘{𝑥})} ≼ 𝐴) → (cf‘(rank‘𝐴)) ≼ 𝐴)
120119, 41syl 17 . . . . . 6 (((cf‘(rank‘𝐴)) ≼ {𝑤 ∣ ∃𝑥𝐴 𝑤 = (rank‘{𝑥})} ∧ {𝑤 ∣ ∃𝑥𝐴 𝑤 = (rank‘{𝑥})} ≼ 𝐴) → ¬ 𝐴 ≺ (cf‘(rank‘𝐴)))
12195, 118, 120syl6an 680 . . . . 5 (Lim (rank‘𝐴) → (𝐴 ≺ (cf‘(rank‘𝐴)) → ¬ 𝐴 ≺ (cf‘(rank‘𝐴))))
122121pm2.01d 191 . . . 4 (Lim (rank‘𝐴) → ¬ 𝐴 ≺ (cf‘(rank‘𝐴)))
123122adantl 482 . . 3 (((rank‘𝐴) ∈ V ∧ Lim (rank‘𝐴)) → ¬ 𝐴 ≺ (cf‘(rank‘𝐴)))
1249, 42, 1233jaoi 1421 . 2 (((rank‘𝐴) = ∅ ∨ ∃𝑥 ∈ On (rank‘𝐴) = suc 𝑥 ∨ ((rank‘𝐴) ∈ V ∧ Lim (rank‘𝐴))) → ¬ 𝐴 ≺ (cf‘(rank‘𝐴)))
1253, 124ax-mp 5 1 ¬ 𝐴 ≺ (cf‘(rank‘𝐴))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 207  wa 396  w3o 1080   = wceq 1530  wcel 2107  {cab 2804  wne 3021  wrex 3144  Vcvv 3500  wss 3940  c0 4295  {csn 4564   cuni 4837   ciun 4917   class class class wbr 5063  cmpt 5143  dom cdm 5554  ran crn 5555  cima 5557  Oncon0 6189  Lim wlim 6190  suc csuc 6191   Fn wfn 6347  ontowfo 6350  cfv 6352  1oc1o 8086  cdom 8496  csdm 8497  𝑅1cr1 9180  rankcrnk 9181  cardccrd 9353  cfccf 9355
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1789  ax-4 1803  ax-5 1904  ax-6 1963  ax-7 2008  ax-8 2109  ax-9 2117  ax-10 2138  ax-11 2153  ax-12 2169  ax-ext 2798  ax-rep 5187  ax-sep 5200  ax-nul 5207  ax-pow 5263  ax-pr 5326  ax-un 7451
This theorem depends on definitions:  df-bi 208  df-an 397  df-or 844  df-3or 1082  df-3an 1083  df-tru 1533  df-ex 1774  df-nf 1778  df-sb 2063  df-mo 2620  df-eu 2652  df-clab 2805  df-cleq 2819  df-clel 2898  df-nfc 2968  df-ne 3022  df-ral 3148  df-rex 3149  df-reu 3150  df-rmo 3151  df-rab 3152  df-v 3502  df-sbc 3777  df-csb 3888  df-dif 3943  df-un 3945  df-in 3947  df-ss 3956  df-pss 3958  df-nul 4296  df-if 4471  df-pw 4544  df-sn 4565  df-pr 4567  df-tp 4569  df-op 4571  df-uni 4838  df-int 4875  df-iun 4919  df-iin 4920  df-br 5064  df-opab 5126  df-mpt 5144  df-tr 5170  df-id 5459  df-eprel 5464  df-po 5473  df-so 5474  df-fr 5513  df-se 5514  df-we 5515  df-xp 5560  df-rel 5561  df-cnv 5562  df-co 5563  df-dm 5564  df-rn 5565  df-res 5566  df-ima 5567  df-pred 6146  df-ord 6192  df-on 6193  df-lim 6194  df-suc 6195  df-iota 6312  df-fun 6354  df-fn 6355  df-f 6356  df-f1 6357  df-fo 6358  df-f1o 6359  df-fv 6360  df-isom 6361  df-riota 7106  df-ov 7151  df-oprab 7152  df-mpo 7153  df-om 7569  df-1st 7680  df-2nd 7681  df-wrecs 7938  df-recs 7999  df-rdg 8037  df-1o 8093  df-er 8279  df-map 8398  df-en 8499  df-dom 8500  df-sdom 8501  df-fin 8502  df-r1 9182  df-rank 9183  df-card 9357  df-cf 9359  df-acn 9360
This theorem is referenced by:  inatsk  10189  grur1  10231
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