Theorem tskcard 9603

Description: An even more direct relationship than r1tskina 9604 to get an inaccessible cardinal out of a Tarski class: the size of any nonempty Tarski class is an inaccessible cardinal. (Contributed by Mario Carneiro, 9-Jun-2013.)

Assertion

Ref	Expression
tskcard	⊢ ((𝑇 ∈ Tarski ∧ 𝑇 ≠ ∅) → (card‘𝑇) ∈ Inacc)

Proof of Theorem tskcard

Dummy variables 𝑤 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		cardeq0 9374	. . . 4 ⊢ (𝑇 ∈ Tarski → ((card‘𝑇) = ∅ ↔ 𝑇 = ∅))
2	1	necon3bid 2838	. . 3 ⊢ (𝑇 ∈ Tarski → ((card‘𝑇) ≠ ∅ ↔ 𝑇 ≠ ∅))
3	2	biimpar 502	. 2 ⊢ ((𝑇 ∈ Tarski ∧ 𝑇 ≠ ∅) → (card‘𝑇) ≠ ∅)
4		eqid 2622	. . . . . 6 ⊢ (𝑧 ∈ (cf‘(ℵ‘∩ {𝑥 ∈ On ∣ (card‘𝑇) ⊆ (ℵ‘𝑥)})) ↦ (har‘(𝑤‘𝑧))) = (𝑧 ∈ (cf‘(ℵ‘∩ {𝑥 ∈ On ∣ (card‘𝑇) ⊆ (ℵ‘𝑥)})) ↦ (har‘(𝑤‘𝑧)))
5	4	pwcfsdom 9405	. . . . 5 ⊢ (ℵ‘∩ {𝑥 ∈ On ∣ (card‘𝑇) ⊆ (ℵ‘𝑥)}) ≺ ((ℵ‘∩ {𝑥 ∈ On ∣ (card‘𝑇) ⊆ (ℵ‘𝑥)}) ↑𝑚 (cf‘(ℵ‘∩ {𝑥 ∈ On ∣ (card‘𝑇) ⊆ (ℵ‘𝑥)})))
6		vpwex 4849	. . . . . . . . . . . 12 ⊢ 𝒫 𝑥 ∈ V
7	6	canth2 8113	. . . . . . . . . . 11 ⊢ 𝒫 𝑥 ≺ 𝒫 𝒫 𝑥
8		simpl 473	. . . . . . . . . . . . 13 ⊢ ((𝑇 ∈ Tarski ∧ 𝑥 ∈ (card‘𝑇)) → 𝑇 ∈ Tarski)
9		cardon 8770	. . . . . . . . . . . . . . . . 17 ⊢ (card‘𝑇) ∈ On
10	9	oneli 5835	. . . . . . . . . . . . . . . 16 ⊢ (𝑥 ∈ (card‘𝑇) → 𝑥 ∈ On)
11	10	adantl 482	. . . . . . . . . . . . . . 15 ⊢ ((𝑇 ∈ Tarski ∧ 𝑥 ∈ (card‘𝑇)) → 𝑥 ∈ On)
12		cardsdomelir 8799	. . . . . . . . . . . . . . . 16 ⊢ (𝑥 ∈ (card‘𝑇) → 𝑥 ≺ 𝑇)
13	12	adantl 482	. . . . . . . . . . . . . . 15 ⊢ ((𝑇 ∈ Tarski ∧ 𝑥 ∈ (card‘𝑇)) → 𝑥 ≺ 𝑇)
14		tskord 9602	. . . . . . . . . . . . . . 15 ⊢ ((𝑇 ∈ Tarski ∧ 𝑥 ∈ On ∧ 𝑥 ≺ 𝑇) → 𝑥 ∈ 𝑇)
15	8, 11, 13, 14	syl3anc 1326	. . . . . . . . . . . . . 14 ⊢ ((𝑇 ∈ Tarski ∧ 𝑥 ∈ (card‘𝑇)) → 𝑥 ∈ 𝑇)
16		tskpw 9575	. . . . . . . . . . . . . . 15 ⊢ ((𝑇 ∈ Tarski ∧ 𝑥 ∈ 𝑇) → 𝒫 𝑥 ∈ 𝑇)
17		tskpwss 9574	. . . . . . . . . . . . . . 15 ⊢ ((𝑇 ∈ Tarski ∧ 𝒫 𝑥 ∈ 𝑇) → 𝒫 𝒫 𝑥 ⊆ 𝑇)
18	16, 17	syldan 487	. . . . . . . . . . . . . 14 ⊢ ((𝑇 ∈ Tarski ∧ 𝑥 ∈ 𝑇) → 𝒫 𝒫 𝑥 ⊆ 𝑇)
19	15, 18	syldan 487	. . . . . . . . . . . . 13 ⊢ ((𝑇 ∈ Tarski ∧ 𝑥 ∈ (card‘𝑇)) → 𝒫 𝒫 𝑥 ⊆ 𝑇)
20		ssdomg 8001	. . . . . . . . . . . . 13 ⊢ (𝑇 ∈ Tarski → (𝒫 𝒫 𝑥 ⊆ 𝑇 → 𝒫 𝒫 𝑥 ≼ 𝑇))
21	8, 19, 20	sylc 65	. . . . . . . . . . . 12 ⊢ ((𝑇 ∈ Tarski ∧ 𝑥 ∈ (card‘𝑇)) → 𝒫 𝒫 𝑥 ≼ 𝑇)
22		cardidg 9370	. . . . . . . . . . . . . 14 ⊢ (𝑇 ∈ Tarski → (card‘𝑇) ≈ 𝑇)
23	22	ensymd 8007	. . . . . . . . . . . . 13 ⊢ (𝑇 ∈ Tarski → 𝑇 ≈ (card‘𝑇))
24	23	adantr 481	. . . . . . . . . . . 12 ⊢ ((𝑇 ∈ Tarski ∧ 𝑥 ∈ (card‘𝑇)) → 𝑇 ≈ (card‘𝑇))
25		domentr 8015	. . . . . . . . . . . 12 ⊢ ((𝒫 𝒫 𝑥 ≼ 𝑇 ∧ 𝑇 ≈ (card‘𝑇)) → 𝒫 𝒫 𝑥 ≼ (card‘𝑇))
26	21, 24, 25	syl2anc 693	. . . . . . . . . . 11 ⊢ ((𝑇 ∈ Tarski ∧ 𝑥 ∈ (card‘𝑇)) → 𝒫 𝒫 𝑥 ≼ (card‘𝑇))
27		sdomdomtr 8093	. . . . . . . . . . 11 ⊢ ((𝒫 𝑥 ≺ 𝒫 𝒫 𝑥 ∧ 𝒫 𝒫 𝑥 ≼ (card‘𝑇)) → 𝒫 𝑥 ≺ (card‘𝑇))
28	7, 26, 27	sylancr 695	. . . . . . . . . 10 ⊢ ((𝑇 ∈ Tarski ∧ 𝑥 ∈ (card‘𝑇)) → 𝒫 𝑥 ≺ (card‘𝑇))
29	28	ralrimiva 2966	. . . . . . . . 9 ⊢ (𝑇 ∈ Tarski → ∀𝑥 ∈ (card‘𝑇)𝒫 𝑥 ≺ (card‘𝑇))
30	29	adantr 481	. . . . . . . 8 ⊢ ((𝑇 ∈ Tarski ∧ 𝑇 ≠ ∅) → ∀𝑥 ∈ (card‘𝑇)𝒫 𝑥 ≺ (card‘𝑇))
31		inawinalem 9511	. . . . . . . . . 10 ⊢ ((card‘𝑇) ∈ On → (∀𝑥 ∈ (card‘𝑇)𝒫 𝑥 ≺ (card‘𝑇) → ∀𝑥 ∈ (card‘𝑇)∃𝑦 ∈ (card‘𝑇)𝑥 ≺ 𝑦))
32	9, 31	ax-mp 5	. . . . . . . . 9 ⊢ (∀𝑥 ∈ (card‘𝑇)𝒫 𝑥 ≺ (card‘𝑇) → ∀𝑥 ∈ (card‘𝑇)∃𝑦 ∈ (card‘𝑇)𝑥 ≺ 𝑦)
33		winainflem 9515	. . . . . . . . . 10 ⊢ (((card‘𝑇) ≠ ∅ ∧ (card‘𝑇) ∈ On ∧ ∀𝑥 ∈ (card‘𝑇)∃𝑦 ∈ (card‘𝑇)𝑥 ≺ 𝑦) → ω ⊆ (card‘𝑇))
34	9, 33	mp3an2 1412	. . . . . . . . 9 ⊢ (((card‘𝑇) ≠ ∅ ∧ ∀𝑥 ∈ (card‘𝑇)∃𝑦 ∈ (card‘𝑇)𝑥 ≺ 𝑦) → ω ⊆ (card‘𝑇))
35	32, 34	sylan2 491	. . . . . . . 8 ⊢ (((card‘𝑇) ≠ ∅ ∧ ∀𝑥 ∈ (card‘𝑇)𝒫 𝑥 ≺ (card‘𝑇)) → ω ⊆ (card‘𝑇))
36	3, 30, 35	syl2anc 693	. . . . . . 7 ⊢ ((𝑇 ∈ Tarski ∧ 𝑇 ≠ ∅) → ω ⊆ (card‘𝑇))
37		cardidm 8785	. . . . . . 7 ⊢ (card‘(card‘𝑇)) = (card‘𝑇)
38		cardaleph 8912	. . . . . . 7 ⊢ ((ω ⊆ (card‘𝑇) ∧ (card‘(card‘𝑇)) = (card‘𝑇)) → (card‘𝑇) = (ℵ‘∩ {𝑥 ∈ On ∣ (card‘𝑇) ⊆ (ℵ‘𝑥)}))
39	36, 37, 38	sylancl 694	. . . . . 6 ⊢ ((𝑇 ∈ Tarski ∧ 𝑇 ≠ ∅) → (card‘𝑇) = (ℵ‘∩ {𝑥 ∈ On ∣ (card‘𝑇) ⊆ (ℵ‘𝑥)}))
40	39	fveq2d 6195	. . . . . . 7 ⊢ ((𝑇 ∈ Tarski ∧ 𝑇 ≠ ∅) → (cf‘(card‘𝑇)) = (cf‘(ℵ‘∩ {𝑥 ∈ On ∣ (card‘𝑇) ⊆ (ℵ‘𝑥)})))
41	39, 40	oveq12d 6668	. . . . . 6 ⊢ ((𝑇 ∈ Tarski ∧ 𝑇 ≠ ∅) → ((card‘𝑇) ↑𝑚 (cf‘(card‘𝑇))) = ((ℵ‘∩ {𝑥 ∈ On ∣ (card‘𝑇) ⊆ (ℵ‘𝑥)}) ↑𝑚 (cf‘(ℵ‘∩ {𝑥 ∈ On ∣ (card‘𝑇) ⊆ (ℵ‘𝑥)}))))
42	39, 41	breq12d 4666	. . . . 5 ⊢ ((𝑇 ∈ Tarski ∧ 𝑇 ≠ ∅) → ((card‘𝑇) ≺ ((card‘𝑇) ↑𝑚 (cf‘(card‘𝑇))) ↔ (ℵ‘∩ {𝑥 ∈ On ∣ (card‘𝑇) ⊆ (ℵ‘𝑥)}) ≺ ((ℵ‘∩ {𝑥 ∈ On ∣ (card‘𝑇) ⊆ (ℵ‘𝑥)}) ↑𝑚 (cf‘(ℵ‘∩ {𝑥 ∈ On ∣ (card‘𝑇) ⊆ (ℵ‘𝑥)})))))
43	5, 42	mpbiri 248	. . . 4 ⊢ ((𝑇 ∈ Tarski ∧ 𝑇 ≠ ∅) → (card‘𝑇) ≺ ((card‘𝑇) ↑𝑚 (cf‘(card‘𝑇))))
44		simp1 1061	. . . . . . . . . . . 12 ⊢ ((𝑇 ∈ Tarski ∧ (cf‘(card‘𝑇)) ∈ (card‘𝑇) ∧ 𝑥 ∈ ((card‘𝑇) ↑𝑚 (cf‘(card‘𝑇)))) → 𝑇 ∈ Tarski)
45		simp3 1063	. . . . . . . . . . . . 13 ⊢ ((𝑇 ∈ Tarski ∧ (cf‘(card‘𝑇)) ∈ (card‘𝑇) ∧ 𝑥 ∈ ((card‘𝑇) ↑𝑚 (cf‘(card‘𝑇)))) → 𝑥 ∈ ((card‘𝑇) ↑𝑚 (cf‘(card‘𝑇))))
46		fvex 6201	. . . . . . . . . . . . . . . 16 ⊢ (card‘𝑇) ∈ V
47		fvex 6201	. . . . . . . . . . . . . . . 16 ⊢ (cf‘(card‘𝑇)) ∈ V
48	46, 47	elmap 7886	. . . . . . . . . . . . . . 15 ⊢ (𝑥 ∈ ((card‘𝑇) ↑𝑚 (cf‘(card‘𝑇))) ↔ 𝑥:(cf‘(card‘𝑇))⟶(card‘𝑇))
49		fssxp 6060	. . . . . . . . . . . . . . 15 ⊢ (𝑥:(cf‘(card‘𝑇))⟶(card‘𝑇) → 𝑥 ⊆ ((cf‘(card‘𝑇)) × (card‘𝑇)))
50	48, 49	sylbi 207	. . . . . . . . . . . . . 14 ⊢ (𝑥 ∈ ((card‘𝑇) ↑𝑚 (cf‘(card‘𝑇))) → 𝑥 ⊆ ((cf‘(card‘𝑇)) × (card‘𝑇)))
51	15	ex 450	. . . . . . . . . . . . . . . 16 ⊢ (𝑇 ∈ Tarski → (𝑥 ∈ (card‘𝑇) → 𝑥 ∈ 𝑇))
52	51	ssrdv 3609	. . . . . . . . . . . . . . 15 ⊢ (𝑇 ∈ Tarski → (card‘𝑇) ⊆ 𝑇)
53		cfle 9076	. . . . . . . . . . . . . . . . 17 ⊢ (cf‘(card‘𝑇)) ⊆ (card‘𝑇)
54		sstr 3611	. . . . . . . . . . . . . . . . 17 ⊢ (((cf‘(card‘𝑇)) ⊆ (card‘𝑇) ∧ (card‘𝑇) ⊆ 𝑇) → (cf‘(card‘𝑇)) ⊆ 𝑇)
55	53, 54	mpan 706	. . . . . . . . . . . . . . . 16 ⊢ ((card‘𝑇) ⊆ 𝑇 → (cf‘(card‘𝑇)) ⊆ 𝑇)
56		tskxpss 9594	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝑇 ∈ Tarski ∧ (cf‘(card‘𝑇)) ⊆ 𝑇 ∧ (card‘𝑇) ⊆ 𝑇) → ((cf‘(card‘𝑇)) × (card‘𝑇)) ⊆ 𝑇)
57	56	3exp 1264	. . . . . . . . . . . . . . . . 17 ⊢ (𝑇 ∈ Tarski → ((cf‘(card‘𝑇)) ⊆ 𝑇 → ((card‘𝑇) ⊆ 𝑇 → ((cf‘(card‘𝑇)) × (card‘𝑇)) ⊆ 𝑇)))
58	57	com23 86	. . . . . . . . . . . . . . . 16 ⊢ (𝑇 ∈ Tarski → ((card‘𝑇) ⊆ 𝑇 → ((cf‘(card‘𝑇)) ⊆ 𝑇 → ((cf‘(card‘𝑇)) × (card‘𝑇)) ⊆ 𝑇)))
59	55, 58	mpdi 45	. . . . . . . . . . . . . . 15 ⊢ (𝑇 ∈ Tarski → ((card‘𝑇) ⊆ 𝑇 → ((cf‘(card‘𝑇)) × (card‘𝑇)) ⊆ 𝑇))
60	52, 59	mpd 15	. . . . . . . . . . . . . 14 ⊢ (𝑇 ∈ Tarski → ((cf‘(card‘𝑇)) × (card‘𝑇)) ⊆ 𝑇)
61		sstr2 3610	. . . . . . . . . . . . . 14 ⊢ (𝑥 ⊆ ((cf‘(card‘𝑇)) × (card‘𝑇)) → (((cf‘(card‘𝑇)) × (card‘𝑇)) ⊆ 𝑇 → 𝑥 ⊆ 𝑇))
62	50, 60, 61	syl2im 40	. . . . . . . . . . . . 13 ⊢ (𝑥 ∈ ((card‘𝑇) ↑𝑚 (cf‘(card‘𝑇))) → (𝑇 ∈ Tarski → 𝑥 ⊆ 𝑇))
63	45, 44, 62	sylc 65	. . . . . . . . . . . 12 ⊢ ((𝑇 ∈ Tarski ∧ (cf‘(card‘𝑇)) ∈ (card‘𝑇) ∧ 𝑥 ∈ ((card‘𝑇) ↑𝑚 (cf‘(card‘𝑇)))) → 𝑥 ⊆ 𝑇)
64		simp2 1062	. . . . . . . . . . . . 13 ⊢ ((𝑇 ∈ Tarski ∧ (cf‘(card‘𝑇)) ∈ (card‘𝑇) ∧ 𝑥 ∈ ((card‘𝑇) ↑𝑚 (cf‘(card‘𝑇)))) → (cf‘(card‘𝑇)) ∈ (card‘𝑇))
65		ffn 6045	. . . . . . . . . . . . . . . . 17 ⊢ (𝑥:(cf‘(card‘𝑇))⟶(card‘𝑇) → 𝑥 Fn (cf‘(card‘𝑇)))
66		fndmeng 8034	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑥 Fn (cf‘(card‘𝑇)) ∧ (cf‘(card‘𝑇)) ∈ V) → (cf‘(card‘𝑇)) ≈ 𝑥)
67	65, 47, 66	sylancl 694	. . . . . . . . . . . . . . . 16 ⊢ (𝑥:(cf‘(card‘𝑇))⟶(card‘𝑇) → (cf‘(card‘𝑇)) ≈ 𝑥)
68	48, 67	sylbi 207	. . . . . . . . . . . . . . 15 ⊢ (𝑥 ∈ ((card‘𝑇) ↑𝑚 (cf‘(card‘𝑇))) → (cf‘(card‘𝑇)) ≈ 𝑥)
69	68	ensymd 8007	. . . . . . . . . . . . . 14 ⊢ (𝑥 ∈ ((card‘𝑇) ↑𝑚 (cf‘(card‘𝑇))) → 𝑥 ≈ (cf‘(card‘𝑇)))
70		cardsdomelir 8799	. . . . . . . . . . . . . 14 ⊢ ((cf‘(card‘𝑇)) ∈ (card‘𝑇) → (cf‘(card‘𝑇)) ≺ 𝑇)
71		ensdomtr 8096	. . . . . . . . . . . . . 14 ⊢ ((𝑥 ≈ (cf‘(card‘𝑇)) ∧ (cf‘(card‘𝑇)) ≺ 𝑇) → 𝑥 ≺ 𝑇)
72	69, 70, 71	syl2an 494	. . . . . . . . . . . . 13 ⊢ ((𝑥 ∈ ((card‘𝑇) ↑𝑚 (cf‘(card‘𝑇))) ∧ (cf‘(card‘𝑇)) ∈ (card‘𝑇)) → 𝑥 ≺ 𝑇)
73	45, 64, 72	syl2anc 693	. . . . . . . . . . . 12 ⊢ ((𝑇 ∈ Tarski ∧ (cf‘(card‘𝑇)) ∈ (card‘𝑇) ∧ 𝑥 ∈ ((card‘𝑇) ↑𝑚 (cf‘(card‘𝑇)))) → 𝑥 ≺ 𝑇)
74		tskssel 9579	. . . . . . . . . . . 12 ⊢ ((𝑇 ∈ Tarski ∧ 𝑥 ⊆ 𝑇 ∧ 𝑥 ≺ 𝑇) → 𝑥 ∈ 𝑇)
75	44, 63, 73, 74	syl3anc 1326	. . . . . . . . . . 11 ⊢ ((𝑇 ∈ Tarski ∧ (cf‘(card‘𝑇)) ∈ (card‘𝑇) ∧ 𝑥 ∈ ((card‘𝑇) ↑𝑚 (cf‘(card‘𝑇)))) → 𝑥 ∈ 𝑇)
76	75	3expia 1267	. . . . . . . . . 10 ⊢ ((𝑇 ∈ Tarski ∧ (cf‘(card‘𝑇)) ∈ (card‘𝑇)) → (𝑥 ∈ ((card‘𝑇) ↑𝑚 (cf‘(card‘𝑇))) → 𝑥 ∈ 𝑇))
77	76	ssrdv 3609	. . . . . . . . 9 ⊢ ((𝑇 ∈ Tarski ∧ (cf‘(card‘𝑇)) ∈ (card‘𝑇)) → ((card‘𝑇) ↑𝑚 (cf‘(card‘𝑇))) ⊆ 𝑇)
78		ssdomg 8001	. . . . . . . . . 10 ⊢ (𝑇 ∈ Tarski → (((card‘𝑇) ↑𝑚 (cf‘(card‘𝑇))) ⊆ 𝑇 → ((card‘𝑇) ↑𝑚 (cf‘(card‘𝑇))) ≼ 𝑇))
79	78	imp 445	. . . . . . . . 9 ⊢ ((𝑇 ∈ Tarski ∧ ((card‘𝑇) ↑𝑚 (cf‘(card‘𝑇))) ⊆ 𝑇) → ((card‘𝑇) ↑𝑚 (cf‘(card‘𝑇))) ≼ 𝑇)
80	77, 79	syldan 487	. . . . . . . 8 ⊢ ((𝑇 ∈ Tarski ∧ (cf‘(card‘𝑇)) ∈ (card‘𝑇)) → ((card‘𝑇) ↑𝑚 (cf‘(card‘𝑇))) ≼ 𝑇)
81	23	adantr 481	. . . . . . . 8 ⊢ ((𝑇 ∈ Tarski ∧ (cf‘(card‘𝑇)) ∈ (card‘𝑇)) → 𝑇 ≈ (card‘𝑇))
82		domentr 8015	. . . . . . . 8 ⊢ ((((card‘𝑇) ↑𝑚 (cf‘(card‘𝑇))) ≼ 𝑇 ∧ 𝑇 ≈ (card‘𝑇)) → ((card‘𝑇) ↑𝑚 (cf‘(card‘𝑇))) ≼ (card‘𝑇))
83	80, 81, 82	syl2anc 693	. . . . . . 7 ⊢ ((𝑇 ∈ Tarski ∧ (cf‘(card‘𝑇)) ∈ (card‘𝑇)) → ((card‘𝑇) ↑𝑚 (cf‘(card‘𝑇))) ≼ (card‘𝑇))
84		domnsym 8086	. . . . . . 7 ⊢ (((card‘𝑇) ↑𝑚 (cf‘(card‘𝑇))) ≼ (card‘𝑇) → ¬ (card‘𝑇) ≺ ((card‘𝑇) ↑𝑚 (cf‘(card‘𝑇))))
85	83, 84	syl 17	. . . . . 6 ⊢ ((𝑇 ∈ Tarski ∧ (cf‘(card‘𝑇)) ∈ (card‘𝑇)) → ¬ (card‘𝑇) ≺ ((card‘𝑇) ↑𝑚 (cf‘(card‘𝑇))))
86	85	ex 450	. . . . 5 ⊢ (𝑇 ∈ Tarski → ((cf‘(card‘𝑇)) ∈ (card‘𝑇) → ¬ (card‘𝑇) ≺ ((card‘𝑇) ↑𝑚 (cf‘(card‘𝑇)))))
87	86	adantr 481	. . . 4 ⊢ ((𝑇 ∈ Tarski ∧ 𝑇 ≠ ∅) → ((cf‘(card‘𝑇)) ∈ (card‘𝑇) → ¬ (card‘𝑇) ≺ ((card‘𝑇) ↑𝑚 (cf‘(card‘𝑇)))))
88	43, 87	mt2d 131	. . 3 ⊢ ((𝑇 ∈ Tarski ∧ 𝑇 ≠ ∅) → ¬ (cf‘(card‘𝑇)) ∈ (card‘𝑇))
89		cfon 9077	. . . . . 6 ⊢ (cf‘(card‘𝑇)) ∈ On
90	89, 9	onsseli 5842	. . . . 5 ⊢ ((cf‘(card‘𝑇)) ⊆ (card‘𝑇) ↔ ((cf‘(card‘𝑇)) ∈ (card‘𝑇) ∨ (cf‘(card‘𝑇)) = (card‘𝑇)))
91	53, 90	mpbi 220	. . . 4 ⊢ ((cf‘(card‘𝑇)) ∈ (card‘𝑇) ∨ (cf‘(card‘𝑇)) = (card‘𝑇))
92	91	ori 390	. . 3 ⊢ (¬ (cf‘(card‘𝑇)) ∈ (card‘𝑇) → (cf‘(card‘𝑇)) = (card‘𝑇))
93	88, 92	syl 17	. 2 ⊢ ((𝑇 ∈ Tarski ∧ 𝑇 ≠ ∅) → (cf‘(card‘𝑇)) = (card‘𝑇))
94		elina 9509	. 2 ⊢ ((card‘𝑇) ∈ Inacc ↔ ((card‘𝑇) ≠ ∅ ∧ (cf‘(card‘𝑇)) = (card‘𝑇) ∧ ∀𝑥 ∈ (card‘𝑇)𝒫 𝑥 ≺ (card‘𝑇)))
95	3, 93, 30, 94	syl3anbrc 1246	1 ⊢ ((𝑇 ∈ Tarski ∧ 𝑇 ≠ ∅) → (card‘𝑇) ∈ Inacc)

Syntax hints:  ¬ wn 3   → wi 4   ∨ wo 383   ∧ wa 384   ∧ w3a 1037   = wceq 1483   ∈ wcel 1990   ≠ wne 2794  ∀wral 2912  ∃wrex 2913  {crab 2916  Vcvv 3200   ⊆ wss 3574  ∅c0 3915  𝒫 cpw 4158  ∩ cint 4475   class class class wbr 4653   ↦ cmpt 4729   × cxp 5112  Oncon0 5723   Fn wfn 5883  ⟶wf 5884  ‘cfv 5888  (class class class)co 6650  ωcom 7065   ↑_𝑚 cmap 7857   ≈ cen 7952   ≼ cdom 7953   ≺ csdm 7954  harchar 8461  cardccrd 8761  ℵcale 8762  cfccf 8763  Inacccina 9505  Tarskictsk 9570

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-rep 4771  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906  ax-un 6949  ax-inf2 8538  ax-ac2 9285

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3or 1038  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-ral 2917  df-rex 2918  df-reu 2919  df-rmo 2920  df-rab 2921  df-v 3202  df-sbc 3436  df-csb 3534  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-pss 3590  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-tp 4182  df-op 4184  df-uni 4437  df-int 4476  df-iun 4522  df-iin 4523  df-br 4654  df-opab 4713  df-mpt 4730  df-tr 4753  df-id 5024  df-eprel 5029  df-po 5035  df-so 5036  df-fr 5073  df-se 5074  df-we 5075  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-pred 5680  df-ord 5726  df-on 5727  df-lim 5728  df-suc 5729  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-f1 5893  df-fo 5894  df-f1o 5895  df-fv 5896  df-isom 5897  df-riota 6611  df-ov 6653  df-oprab 6654  df-mpt2 6655  df-om 7066  df-1st 7168  df-2nd 7169  df-wrecs 7407  df-smo 7443  df-recs 7468  df-rdg 7506  df-1o 7560  df-2o 7561  df-oadd 7564  df-er 7742  df-map 7859  df-ixp 7909  df-en 7956  df-dom 7957  df-sdom 7958  df-fin 7959  df-oi 8415  df-har 8463  df-r1 8627  df-card 8765  df-aleph 8766  df-cf 8767  df-acn 8768  df-ac 8939  df-ina 9507  df-tsk 9571

This theorem is referenced by:  r1tskina  9604  tskuni  9605  inaprc  9658