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

Theorem cfpwsdom 9663
Description: A corollary of Konig's Theorem konigth 9648. Theorem 11.29 of [TakeutiZaring] p. 108. (Contributed by Mario Carneiro, 20-Mar-2013.)
Hypothesis
Ref Expression
cfpwsdom.1 𝐵 ∈ V
Assertion
Ref Expression
cfpwsdom (2𝑜𝐵 → (ℵ‘𝐴) ≺ (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))))

Proof of Theorem cfpwsdom
Dummy variables 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 ovex 6878 . . . . . . . . 9 (𝐵𝑚 (ℵ‘𝐴)) ∈ V
21cardid 9626 . . . . . . . 8 (card‘(𝐵𝑚 (ℵ‘𝐴))) ≈ (𝐵𝑚 (ℵ‘𝐴))
32ensymi 8214 . . . . . . 7 (𝐵𝑚 (ℵ‘𝐴)) ≈ (card‘(𝐵𝑚 (ℵ‘𝐴)))
4 fvex 6392 . . . . . . . . . . . . . 14 (ℵ‘𝐴) ∈ V
54canth2 8324 . . . . . . . . . . . . 13 (ℵ‘𝐴) ≺ 𝒫 (ℵ‘𝐴)
64pw2en 8278 . . . . . . . . . . . . 13 𝒫 (ℵ‘𝐴) ≈ (2𝑜𝑚 (ℵ‘𝐴))
7 sdomentr 8305 . . . . . . . . . . . . 13 (((ℵ‘𝐴) ≺ 𝒫 (ℵ‘𝐴) ∧ 𝒫 (ℵ‘𝐴) ≈ (2𝑜𝑚 (ℵ‘𝐴))) → (ℵ‘𝐴) ≺ (2𝑜𝑚 (ℵ‘𝐴)))
85, 6, 7mp2an 683 . . . . . . . . . . . 12 (ℵ‘𝐴) ≺ (2𝑜𝑚 (ℵ‘𝐴))
9 mapdom1 8336 . . . . . . . . . . . 12 (2𝑜𝐵 → (2𝑜𝑚 (ℵ‘𝐴)) ≼ (𝐵𝑚 (ℵ‘𝐴)))
10 sdomdomtr 8304 . . . . . . . . . . . 12 (((ℵ‘𝐴) ≺ (2𝑜𝑚 (ℵ‘𝐴)) ∧ (2𝑜𝑚 (ℵ‘𝐴)) ≼ (𝐵𝑚 (ℵ‘𝐴))) → (ℵ‘𝐴) ≺ (𝐵𝑚 (ℵ‘𝐴)))
118, 9, 10sylancr 581 . . . . . . . . . . 11 (2𝑜𝐵 → (ℵ‘𝐴) ≺ (𝐵𝑚 (ℵ‘𝐴)))
12 ficard 9644 . . . . . . . . . . . . . . . . 17 ((𝐵𝑚 (ℵ‘𝐴)) ∈ V → ((𝐵𝑚 (ℵ‘𝐴)) ∈ Fin ↔ (card‘(𝐵𝑚 (ℵ‘𝐴))) ∈ ω))
131, 12ax-mp 5 . . . . . . . . . . . . . . . 16 ((𝐵𝑚 (ℵ‘𝐴)) ∈ Fin ↔ (card‘(𝐵𝑚 (ℵ‘𝐴))) ∈ ω)
14 isfinite 8768 . . . . . . . . . . . . . . . . 17 ((𝐵𝑚 (ℵ‘𝐴)) ∈ Fin ↔ (𝐵𝑚 (ℵ‘𝐴)) ≺ ω)
15 sdomdom 8192 . . . . . . . . . . . . . . . . 17 ((𝐵𝑚 (ℵ‘𝐴)) ≺ ω → (𝐵𝑚 (ℵ‘𝐴)) ≼ ω)
1614, 15sylbi 208 . . . . . . . . . . . . . . . 16 ((𝐵𝑚 (ℵ‘𝐴)) ∈ Fin → (𝐵𝑚 (ℵ‘𝐴)) ≼ ω)
1713, 16sylbir 226 . . . . . . . . . . . . . . 15 ((card‘(𝐵𝑚 (ℵ‘𝐴))) ∈ ω → (𝐵𝑚 (ℵ‘𝐴)) ≼ ω)
18 alephgeom 9160 . . . . . . . . . . . . . . . 16 (𝐴 ∈ On ↔ ω ⊆ (ℵ‘𝐴))
19 alephon 9147 . . . . . . . . . . . . . . . . 17 (ℵ‘𝐴) ∈ On
20 ssdomg 8210 . . . . . . . . . . . . . . . . 17 ((ℵ‘𝐴) ∈ On → (ω ⊆ (ℵ‘𝐴) → ω ≼ (ℵ‘𝐴)))
2119, 20ax-mp 5 . . . . . . . . . . . . . . . 16 (ω ⊆ (ℵ‘𝐴) → ω ≼ (ℵ‘𝐴))
2218, 21sylbi 208 . . . . . . . . . . . . . . 15 (𝐴 ∈ On → ω ≼ (ℵ‘𝐴))
23 domtr 8217 . . . . . . . . . . . . . . 15 (((𝐵𝑚 (ℵ‘𝐴)) ≼ ω ∧ ω ≼ (ℵ‘𝐴)) → (𝐵𝑚 (ℵ‘𝐴)) ≼ (ℵ‘𝐴))
2417, 22, 23syl2an 589 . . . . . . . . . . . . . 14 (((card‘(𝐵𝑚 (ℵ‘𝐴))) ∈ ω ∧ 𝐴 ∈ On) → (𝐵𝑚 (ℵ‘𝐴)) ≼ (ℵ‘𝐴))
25 domnsym 8297 . . . . . . . . . . . . . 14 ((𝐵𝑚 (ℵ‘𝐴)) ≼ (ℵ‘𝐴) → ¬ (ℵ‘𝐴) ≺ (𝐵𝑚 (ℵ‘𝐴)))
2624, 25syl 17 . . . . . . . . . . . . 13 (((card‘(𝐵𝑚 (ℵ‘𝐴))) ∈ ω ∧ 𝐴 ∈ On) → ¬ (ℵ‘𝐴) ≺ (𝐵𝑚 (ℵ‘𝐴)))
2726expcom 402 . . . . . . . . . . . 12 (𝐴 ∈ On → ((card‘(𝐵𝑚 (ℵ‘𝐴))) ∈ ω → ¬ (ℵ‘𝐴) ≺ (𝐵𝑚 (ℵ‘𝐴))))
2827con2d 131 . . . . . . . . . . 11 (𝐴 ∈ On → ((ℵ‘𝐴) ≺ (𝐵𝑚 (ℵ‘𝐴)) → ¬ (card‘(𝐵𝑚 (ℵ‘𝐴))) ∈ ω))
29 cardidm 9040 . . . . . . . . . . . 12 (card‘(card‘(𝐵𝑚 (ℵ‘𝐴)))) = (card‘(𝐵𝑚 (ℵ‘𝐴)))
30 iscard3 9171 . . . . . . . . . . . . 13 ((card‘(card‘(𝐵𝑚 (ℵ‘𝐴)))) = (card‘(𝐵𝑚 (ℵ‘𝐴))) ↔ (card‘(𝐵𝑚 (ℵ‘𝐴))) ∈ (ω ∪ ran ℵ))
31 elun 3917 . . . . . . . . . . . . 13 ((card‘(𝐵𝑚 (ℵ‘𝐴))) ∈ (ω ∪ ran ℵ) ↔ ((card‘(𝐵𝑚 (ℵ‘𝐴))) ∈ ω ∨ (card‘(𝐵𝑚 (ℵ‘𝐴))) ∈ ran ℵ))
32 df-or 874 . . . . . . . . . . . . 13 (((card‘(𝐵𝑚 (ℵ‘𝐴))) ∈ ω ∨ (card‘(𝐵𝑚 (ℵ‘𝐴))) ∈ ran ℵ) ↔ (¬ (card‘(𝐵𝑚 (ℵ‘𝐴))) ∈ ω → (card‘(𝐵𝑚 (ℵ‘𝐴))) ∈ ran ℵ))
3330, 31, 323bitri 288 . . . . . . . . . . . 12 ((card‘(card‘(𝐵𝑚 (ℵ‘𝐴)))) = (card‘(𝐵𝑚 (ℵ‘𝐴))) ↔ (¬ (card‘(𝐵𝑚 (ℵ‘𝐴))) ∈ ω → (card‘(𝐵𝑚 (ℵ‘𝐴))) ∈ ran ℵ))
3429, 33mpbi 221 . . . . . . . . . . 11 (¬ (card‘(𝐵𝑚 (ℵ‘𝐴))) ∈ ω → (card‘(𝐵𝑚 (ℵ‘𝐴))) ∈ ran ℵ)
3511, 28, 34syl56 36 . . . . . . . . . 10 (𝐴 ∈ On → (2𝑜𝐵 → (card‘(𝐵𝑚 (ℵ‘𝐴))) ∈ ran ℵ))
36 alephfnon 9143 . . . . . . . . . . 11 ℵ Fn On
37 fvelrnb 6436 . . . . . . . . . . 11 (ℵ Fn On → ((card‘(𝐵𝑚 (ℵ‘𝐴))) ∈ ran ℵ ↔ ∃𝑥 ∈ On (ℵ‘𝑥) = (card‘(𝐵𝑚 (ℵ‘𝐴)))))
3836, 37ax-mp 5 . . . . . . . . . 10 ((card‘(𝐵𝑚 (ℵ‘𝐴))) ∈ ran ℵ ↔ ∃𝑥 ∈ On (ℵ‘𝑥) = (card‘(𝐵𝑚 (ℵ‘𝐴))))
3935, 38syl6ib 242 . . . . . . . . 9 (𝐴 ∈ On → (2𝑜𝐵 → ∃𝑥 ∈ On (ℵ‘𝑥) = (card‘(𝐵𝑚 (ℵ‘𝐴)))))
40 eqid 2765 . . . . . . . . . . . 12 (𝑦 ∈ (cf‘(ℵ‘𝑥)) ↦ (har‘(𝑧𝑦))) = (𝑦 ∈ (cf‘(ℵ‘𝑥)) ↦ (har‘(𝑧𝑦)))
4140pwcfsdom 9662 . . . . . . . . . . 11 (ℵ‘𝑥) ≺ ((ℵ‘𝑥) ↑𝑚 (cf‘(ℵ‘𝑥)))
42 id 22 . . . . . . . . . . . 12 ((ℵ‘𝑥) = (card‘(𝐵𝑚 (ℵ‘𝐴))) → (ℵ‘𝑥) = (card‘(𝐵𝑚 (ℵ‘𝐴))))
43 fveq2 6379 . . . . . . . . . . . . 13 ((ℵ‘𝑥) = (card‘(𝐵𝑚 (ℵ‘𝐴))) → (cf‘(ℵ‘𝑥)) = (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))))
4442, 43oveq12d 6864 . . . . . . . . . . . 12 ((ℵ‘𝑥) = (card‘(𝐵𝑚 (ℵ‘𝐴))) → ((ℵ‘𝑥) ↑𝑚 (cf‘(ℵ‘𝑥))) = ((card‘(𝐵𝑚 (ℵ‘𝐴))) ↑𝑚 (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴))))))
4542, 44breq12d 4824 . . . . . . . . . . 11 ((ℵ‘𝑥) = (card‘(𝐵𝑚 (ℵ‘𝐴))) → ((ℵ‘𝑥) ≺ ((ℵ‘𝑥) ↑𝑚 (cf‘(ℵ‘𝑥))) ↔ (card‘(𝐵𝑚 (ℵ‘𝐴))) ≺ ((card‘(𝐵𝑚 (ℵ‘𝐴))) ↑𝑚 (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))))))
4641, 45mpbii 224 . . . . . . . . . 10 ((ℵ‘𝑥) = (card‘(𝐵𝑚 (ℵ‘𝐴))) → (card‘(𝐵𝑚 (ℵ‘𝐴))) ≺ ((card‘(𝐵𝑚 (ℵ‘𝐴))) ↑𝑚 (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴))))))
4746rexlimivw 3176 . . . . . . . . 9 (∃𝑥 ∈ On (ℵ‘𝑥) = (card‘(𝐵𝑚 (ℵ‘𝐴))) → (card‘(𝐵𝑚 (ℵ‘𝐴))) ≺ ((card‘(𝐵𝑚 (ℵ‘𝐴))) ↑𝑚 (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴))))))
4839, 47syl6 35 . . . . . . . 8 (𝐴 ∈ On → (2𝑜𝐵 → (card‘(𝐵𝑚 (ℵ‘𝐴))) ≺ ((card‘(𝐵𝑚 (ℵ‘𝐴))) ↑𝑚 (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))))))
4948imp 395 . . . . . . 7 ((𝐴 ∈ On ∧ 2𝑜𝐵) → (card‘(𝐵𝑚 (ℵ‘𝐴))) ≺ ((card‘(𝐵𝑚 (ℵ‘𝐴))) ↑𝑚 (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴))))))
50 ensdomtr 8307 . . . . . . 7 (((𝐵𝑚 (ℵ‘𝐴)) ≈ (card‘(𝐵𝑚 (ℵ‘𝐴))) ∧ (card‘(𝐵𝑚 (ℵ‘𝐴))) ≺ ((card‘(𝐵𝑚 (ℵ‘𝐴))) ↑𝑚 (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))))) → (𝐵𝑚 (ℵ‘𝐴)) ≺ ((card‘(𝐵𝑚 (ℵ‘𝐴))) ↑𝑚 (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴))))))
513, 49, 50sylancr 581 . . . . . 6 ((𝐴 ∈ On ∧ 2𝑜𝐵) → (𝐵𝑚 (ℵ‘𝐴)) ≺ ((card‘(𝐵𝑚 (ℵ‘𝐴))) ↑𝑚 (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴))))))
52 fvex 6392 . . . . . . . . 9 (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))) ∈ V
5352enref 8197 . . . . . . . 8 (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))) ≈ (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴))))
54 mapen 8335 . . . . . . . 8 (((card‘(𝐵𝑚 (ℵ‘𝐴))) ≈ (𝐵𝑚 (ℵ‘𝐴)) ∧ (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))) ≈ (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴))))) → ((card‘(𝐵𝑚 (ℵ‘𝐴))) ↑𝑚 (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴))))) ≈ ((𝐵𝑚 (ℵ‘𝐴)) ↑𝑚 (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴))))))
552, 53, 54mp2an 683 . . . . . . 7 ((card‘(𝐵𝑚 (ℵ‘𝐴))) ↑𝑚 (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴))))) ≈ ((𝐵𝑚 (ℵ‘𝐴)) ↑𝑚 (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))))
56 cfpwsdom.1 . . . . . . . 8 𝐵 ∈ V
57 mapxpen 8337 . . . . . . . 8 ((𝐵 ∈ V ∧ (ℵ‘𝐴) ∈ On ∧ (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))) ∈ V) → ((𝐵𝑚 (ℵ‘𝐴)) ↑𝑚 (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴))))) ≈ (𝐵𝑚 ((ℵ‘𝐴) × (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))))))
5856, 19, 52, 57mp3an 1585 . . . . . . 7 ((𝐵𝑚 (ℵ‘𝐴)) ↑𝑚 (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴))))) ≈ (𝐵𝑚 ((ℵ‘𝐴) × (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴))))))
5955, 58entri 8218 . . . . . 6 ((card‘(𝐵𝑚 (ℵ‘𝐴))) ↑𝑚 (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴))))) ≈ (𝐵𝑚 ((ℵ‘𝐴) × (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴))))))
60 sdomentr 8305 . . . . . 6 (((𝐵𝑚 (ℵ‘𝐴)) ≺ ((card‘(𝐵𝑚 (ℵ‘𝐴))) ↑𝑚 (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴))))) ∧ ((card‘(𝐵𝑚 (ℵ‘𝐴))) ↑𝑚 (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴))))) ≈ (𝐵𝑚 ((ℵ‘𝐴) × (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴))))))) → (𝐵𝑚 (ℵ‘𝐴)) ≺ (𝐵𝑚 ((ℵ‘𝐴) × (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))))))
6151, 59, 60sylancl 580 . . . . 5 ((𝐴 ∈ On ∧ 2𝑜𝐵) → (𝐵𝑚 (ℵ‘𝐴)) ≺ (𝐵𝑚 ((ℵ‘𝐴) × (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))))))
624xpdom2 8266 . . . . . . . . . 10 ((cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))) ≼ (ℵ‘𝐴) → ((ℵ‘𝐴) × (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴))))) ≼ ((ℵ‘𝐴) × (ℵ‘𝐴)))
6318biimpi 207 . . . . . . . . . . 11 (𝐴 ∈ On → ω ⊆ (ℵ‘𝐴))
64 infxpen 9092 . . . . . . . . . . 11 (((ℵ‘𝐴) ∈ On ∧ ω ⊆ (ℵ‘𝐴)) → ((ℵ‘𝐴) × (ℵ‘𝐴)) ≈ (ℵ‘𝐴))
6519, 63, 64sylancr 581 . . . . . . . . . 10 (𝐴 ∈ On → ((ℵ‘𝐴) × (ℵ‘𝐴)) ≈ (ℵ‘𝐴))
66 domentr 8223 . . . . . . . . . 10 ((((ℵ‘𝐴) × (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴))))) ≼ ((ℵ‘𝐴) × (ℵ‘𝐴)) ∧ ((ℵ‘𝐴) × (ℵ‘𝐴)) ≈ (ℵ‘𝐴)) → ((ℵ‘𝐴) × (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴))))) ≼ (ℵ‘𝐴))
6762, 65, 66syl2an 589 . . . . . . . . 9 (((cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))) ≼ (ℵ‘𝐴) ∧ 𝐴 ∈ On) → ((ℵ‘𝐴) × (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴))))) ≼ (ℵ‘𝐴))
68 nsuceq0 5990 . . . . . . . . . . 11 suc 1𝑜 ≠ ∅
69 dom0 8299 . . . . . . . . . . 11 (suc 1𝑜 ≼ ∅ ↔ suc 1𝑜 = ∅)
7068, 69nemtbir 3032 . . . . . . . . . 10 ¬ suc 1𝑜 ≼ ∅
71 df-2o 7769 . . . . . . . . . . . . . 14 2𝑜 = suc 1𝑜
7271breq1i 4818 . . . . . . . . . . . . 13 (2𝑜𝐵 ↔ suc 1𝑜𝐵)
73 breq2 4815 . . . . . . . . . . . . 13 (𝐵 = ∅ → (suc 1𝑜𝐵 ↔ suc 1𝑜 ≼ ∅))
7472, 73syl5bb 274 . . . . . . . . . . . 12 (𝐵 = ∅ → (2𝑜𝐵 ↔ suc 1𝑜 ≼ ∅))
7574biimpcd 240 . . . . . . . . . . 11 (2𝑜𝐵 → (𝐵 = ∅ → suc 1𝑜 ≼ ∅))
7675adantld 484 . . . . . . . . . 10 (2𝑜𝐵 → ((((ℵ‘𝐴) × (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴))))) = ∅ ∧ 𝐵 = ∅) → suc 1𝑜 ≼ ∅))
7770, 76mtoi 190 . . . . . . . . 9 (2𝑜𝐵 → ¬ (((ℵ‘𝐴) × (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴))))) = ∅ ∧ 𝐵 = ∅))
78 mapdom2 8342 . . . . . . . . 9 ((((ℵ‘𝐴) × (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴))))) ≼ (ℵ‘𝐴) ∧ ¬ (((ℵ‘𝐴) × (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴))))) = ∅ ∧ 𝐵 = ∅)) → (𝐵𝑚 ((ℵ‘𝐴) × (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))))) ≼ (𝐵𝑚 (ℵ‘𝐴)))
7967, 77, 78syl2an 589 . . . . . . . 8 ((((cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))) ≼ (ℵ‘𝐴) ∧ 𝐴 ∈ On) ∧ 2𝑜𝐵) → (𝐵𝑚 ((ℵ‘𝐴) × (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))))) ≼ (𝐵𝑚 (ℵ‘𝐴)))
80 domnsym 8297 . . . . . . . 8 ((𝐵𝑚 ((ℵ‘𝐴) × (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))))) ≼ (𝐵𝑚 (ℵ‘𝐴)) → ¬ (𝐵𝑚 (ℵ‘𝐴)) ≺ (𝐵𝑚 ((ℵ‘𝐴) × (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))))))
8179, 80syl 17 . . . . . . 7 ((((cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))) ≼ (ℵ‘𝐴) ∧ 𝐴 ∈ On) ∧ 2𝑜𝐵) → ¬ (𝐵𝑚 (ℵ‘𝐴)) ≺ (𝐵𝑚 ((ℵ‘𝐴) × (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))))))
8281expl 449 . . . . . 6 ((cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))) ≼ (ℵ‘𝐴) → ((𝐴 ∈ On ∧ 2𝑜𝐵) → ¬ (𝐵𝑚 (ℵ‘𝐴)) ≺ (𝐵𝑚 ((ℵ‘𝐴) × (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴))))))))
8382com12 32 . . . . 5 ((𝐴 ∈ On ∧ 2𝑜𝐵) → ((cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))) ≼ (ℵ‘𝐴) → ¬ (𝐵𝑚 (ℵ‘𝐴)) ≺ (𝐵𝑚 ((ℵ‘𝐴) × (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴))))))))
8461, 83mt2d 133 . . . 4 ((𝐴 ∈ On ∧ 2𝑜𝐵) → ¬ (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))) ≼ (ℵ‘𝐴))
85 domtri 9635 . . . . . 6 (((cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))) ∈ V ∧ (ℵ‘𝐴) ∈ V) → ((cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))) ≼ (ℵ‘𝐴) ↔ ¬ (ℵ‘𝐴) ≺ (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴))))))
8652, 4, 85mp2an 683 . . . . 5 ((cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))) ≼ (ℵ‘𝐴) ↔ ¬ (ℵ‘𝐴) ≺ (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))))
8786biimpri 219 . . . 4 (¬ (ℵ‘𝐴) ≺ (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))) → (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))) ≼ (ℵ‘𝐴))
8884, 87nsyl2 144 . . 3 ((𝐴 ∈ On ∧ 2𝑜𝐵) → (ℵ‘𝐴) ≺ (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))))
8988ex 401 . 2 (𝐴 ∈ On → (2𝑜𝐵 → (ℵ‘𝐴) ≺ (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴))))))
90 fndm 6170 . . . . . 6 (ℵ Fn On → dom ℵ = On)
9136, 90ax-mp 5 . . . . 5 dom ℵ = On
9291eleq2i 2836 . . . 4 (𝐴 ∈ dom ℵ ↔ 𝐴 ∈ On)
93 ndmfv 6409 . . . 4 𝐴 ∈ dom ℵ → (ℵ‘𝐴) = ∅)
9492, 93sylnbir 322 . . 3 𝐴 ∈ On → (ℵ‘𝐴) = ∅)
95 1n0 7784 . . . . . 6 1𝑜 ≠ ∅
96 1onn 7928 . . . . . . . 8 1𝑜 ∈ ω
9796elexi 3366 . . . . . . 7 1𝑜 ∈ V
98970sdom 8302 . . . . . 6 (∅ ≺ 1𝑜 ↔ 1𝑜 ≠ ∅)
9995, 98mpbir 222 . . . . 5 ∅ ≺ 1𝑜
100 id 22 . . . . . 6 ((ℵ‘𝐴) = ∅ → (ℵ‘𝐴) = ∅)
101 oveq2 6854 . . . . . . . . . . 11 ((ℵ‘𝐴) = ∅ → (𝐵𝑚 (ℵ‘𝐴)) = (𝐵𝑚 ∅))
102 map0e 8102 . . . . . . . . . . . 12 (𝐵 ∈ V → (𝐵𝑚 ∅) = 1𝑜)
10356, 102ax-mp 5 . . . . . . . . . . 11 (𝐵𝑚 ∅) = 1𝑜
104101, 103syl6eq 2815 . . . . . . . . . 10 ((ℵ‘𝐴) = ∅ → (𝐵𝑚 (ℵ‘𝐴)) = 1𝑜)
105104fveq2d 6383 . . . . . . . . 9 ((ℵ‘𝐴) = ∅ → (card‘(𝐵𝑚 (ℵ‘𝐴))) = (card‘1𝑜))
106 cardnn 9044 . . . . . . . . . 10 (1𝑜 ∈ ω → (card‘1𝑜) = 1𝑜)
10796, 106ax-mp 5 . . . . . . . . 9 (card‘1𝑜) = 1𝑜
108105, 107syl6eq 2815 . . . . . . . 8 ((ℵ‘𝐴) = ∅ → (card‘(𝐵𝑚 (ℵ‘𝐴))) = 1𝑜)
109108fveq2d 6383 . . . . . . 7 ((ℵ‘𝐴) = ∅ → (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))) = (cf‘1𝑜))
110 df-1o 7768 . . . . . . . . 9 1𝑜 = suc ∅
111110fveq2i 6382 . . . . . . . 8 (cf‘1𝑜) = (cf‘suc ∅)
112 0elon 5963 . . . . . . . . 9 ∅ ∈ On
113 cfsuc 9336 . . . . . . . . 9 (∅ ∈ On → (cf‘suc ∅) = 1𝑜)
114112, 113ax-mp 5 . . . . . . . 8 (cf‘suc ∅) = 1𝑜
115111, 114eqtri 2787 . . . . . . 7 (cf‘1𝑜) = 1𝑜
116109, 115syl6eq 2815 . . . . . 6 ((ℵ‘𝐴) = ∅ → (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))) = 1𝑜)
117100, 116breq12d 4824 . . . . 5 ((ℵ‘𝐴) = ∅ → ((ℵ‘𝐴) ≺ (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))) ↔ ∅ ≺ 1𝑜))
11899, 117mpbiri 249 . . . 4 ((ℵ‘𝐴) = ∅ → (ℵ‘𝐴) ≺ (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))))
119118a1d 25 . . 3 ((ℵ‘𝐴) = ∅ → (2𝑜𝐵 → (ℵ‘𝐴) ≺ (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴))))))
12094, 119syl 17 . 2 𝐴 ∈ On → (2𝑜𝐵 → (ℵ‘𝐴) ≺ (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴))))))
12189, 120pm2.61i 176 1 (2𝑜𝐵 → (ℵ‘𝐴) ≺ (cf‘(card‘(𝐵𝑚 (ℵ‘𝐴)))))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 197  wa 384  wo 873   = wceq 1652  wcel 2155  wne 2937  wrex 3056  Vcvv 3350  cun 3732  wss 3734  c0 4081  𝒫 cpw 4317   class class class wbr 4811  cmpt 4890   × cxp 5277  dom cdm 5279  ran crn 5280  Oncon0 5910  suc csuc 5912   Fn wfn 6065  cfv 6070  (class class class)co 6846  ωcom 7267  1𝑜c1o 7761  2𝑜c2o 7762  𝑚 cmap 8064  cen 8161  cdom 8162  csdm 8163  Fincfn 8164  harchar 8672  cardccrd 9016  cale 9017  cfccf 9018
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1890  ax-4 1904  ax-5 2005  ax-6 2070  ax-7 2105  ax-8 2157  ax-9 2164  ax-10 2183  ax-11 2198  ax-12 2211  ax-13 2352  ax-ext 2743  ax-rep 4932  ax-sep 4943  ax-nul 4951  ax-pow 5003  ax-pr 5064  ax-un 7151  ax-inf2 8757  ax-ac2 9542
This theorem depends on definitions:  df-bi 198  df-an 385  df-or 874  df-3or 1108  df-3an 1109  df-tru 1656  df-ex 1875  df-nf 1879  df-sb 2063  df-mo 2565  df-eu 2582  df-clab 2752  df-cleq 2758  df-clel 2761  df-nfc 2896  df-ne 2938  df-ral 3060  df-rex 3061  df-reu 3062  df-rmo 3063  df-rab 3064  df-v 3352  df-sbc 3599  df-csb 3694  df-dif 3737  df-un 3739  df-in 3741  df-ss 3748  df-pss 3750  df-nul 4082  df-if 4246  df-pw 4319  df-sn 4337  df-pr 4339  df-tp 4341  df-op 4343  df-uni 4597  df-int 4636  df-iun 4680  df-iin 4681  df-br 4812  df-opab 4874  df-mpt 4891  df-tr 4914  df-id 5187  df-eprel 5192  df-po 5200  df-so 5201  df-fr 5238  df-se 5239  df-we 5240  df-xp 5285  df-rel 5286  df-cnv 5287  df-co 5288  df-dm 5289  df-rn 5290  df-res 5291  df-ima 5292  df-pred 5867  df-ord 5913  df-on 5914  df-lim 5915  df-suc 5916  df-iota 6033  df-fun 6072  df-fn 6073  df-f 6074  df-f1 6075  df-fo 6076  df-f1o 6077  df-fv 6078  df-isom 6079  df-riota 6807  df-ov 6849  df-oprab 6850  df-mpt2 6851  df-om 7268  df-1st 7370  df-2nd 7371  df-wrecs 7614  df-smo 7651  df-recs 7676  df-rdg 7714  df-1o 7768  df-2o 7769  df-oadd 7772  df-er 7951  df-map 8066  df-ixp 8118  df-en 8165  df-dom 8166  df-sdom 8167  df-fin 8168  df-oi 8626  df-har 8674  df-card 9020  df-aleph 9021  df-cf 9022  df-acn 9023  df-ac 9194
This theorem is referenced by:  alephom  9664
  Copyright terms: Public domain W3C validator