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Theorem 1stcrestlem 22057
Description: Lemma for 1stcrest 22058. (Contributed by Mario Carneiro, 21-Mar-2015.) (Revised by Mario Carneiro, 30-Apr-2015.)
Assertion
Ref Expression
1stcrestlem (𝐵 ≼ ω → ran (𝑥𝐵𝐶) ≼ ω)
Distinct variable group:   𝑥,𝐵
Allowed substitution hint:   𝐶(𝑥)

Proof of Theorem 1stcrestlem
StepHypRef Expression
1 ordom 7569 . . . . . 6 Ord ω
2 reldom 8498 . . . . . . . 8 Rel ≼
32brrelex2i 5573 . . . . . . 7 (𝐵 ≼ ω → ω ∈ V)
4 elong 6167 . . . . . . 7 (ω ∈ V → (ω ∈ On ↔ Ord ω))
53, 4syl 17 . . . . . 6 (𝐵 ≼ ω → (ω ∈ On ↔ Ord ω))
61, 5mpbiri 261 . . . . 5 (𝐵 ≼ ω → ω ∈ On)
7 ondomen 9448 . . . . 5 ((ω ∈ On ∧ 𝐵 ≼ ω) → 𝐵 ∈ dom card)
86, 7mpancom 687 . . . 4 (𝐵 ≼ ω → 𝐵 ∈ dom card)
9 eqid 2798 . . . . 5 (𝑥𝐵𝐶) = (𝑥𝐵𝐶)
109dmmptss 6062 . . . 4 dom (𝑥𝐵𝐶) ⊆ 𝐵
11 ssnum 9450 . . . 4 ((𝐵 ∈ dom card ∧ dom (𝑥𝐵𝐶) ⊆ 𝐵) → dom (𝑥𝐵𝐶) ∈ dom card)
128, 10, 11sylancl 589 . . 3 (𝐵 ≼ ω → dom (𝑥𝐵𝐶) ∈ dom card)
13 funmpt 6362 . . . 4 Fun (𝑥𝐵𝐶)
14 funforn 6572 . . . 4 (Fun (𝑥𝐵𝐶) ↔ (𝑥𝐵𝐶):dom (𝑥𝐵𝐶)–onto→ran (𝑥𝐵𝐶))
1513, 14mpbi 233 . . 3 (𝑥𝐵𝐶):dom (𝑥𝐵𝐶)–onto→ran (𝑥𝐵𝐶)
16 fodomnum 9468 . . 3 (dom (𝑥𝐵𝐶) ∈ dom card → ((𝑥𝐵𝐶):dom (𝑥𝐵𝐶)–onto→ran (𝑥𝐵𝐶) → ran (𝑥𝐵𝐶) ≼ dom (𝑥𝐵𝐶)))
1712, 15, 16mpisyl 21 . 2 (𝐵 ≼ ω → ran (𝑥𝐵𝐶) ≼ dom (𝑥𝐵𝐶))
18 ctex 8507 . . . 4 (𝐵 ≼ ω → 𝐵 ∈ V)
19 ssdomg 8538 . . . 4 (𝐵 ∈ V → (dom (𝑥𝐵𝐶) ⊆ 𝐵 → dom (𝑥𝐵𝐶) ≼ 𝐵))
2018, 10, 19mpisyl 21 . . 3 (𝐵 ≼ ω → dom (𝑥𝐵𝐶) ≼ 𝐵)
21 domtr 8545 . . 3 ((dom (𝑥𝐵𝐶) ≼ 𝐵𝐵 ≼ ω) → dom (𝑥𝐵𝐶) ≼ ω)
2220, 21mpancom 687 . 2 (𝐵 ≼ ω → dom (𝑥𝐵𝐶) ≼ ω)
23 domtr 8545 . 2 ((ran (𝑥𝐵𝐶) ≼ dom (𝑥𝐵𝐶) ∧ dom (𝑥𝐵𝐶) ≼ ω) → ran (𝑥𝐵𝐶) ≼ ω)
2417, 22, 23syl2anc 587 1 (𝐵 ≼ ω → ran (𝑥𝐵𝐶) ≼ ω)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 209  wcel 2111  Vcvv 3441  wss 3881   class class class wbr 5030  cmpt 5110  dom cdm 5519  ran crn 5520  Ord word 6158  Oncon0 6159  Fun wfun 6318  ontowfo 6322  ωcom 7560  cdom 8490  cardccrd 9348
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2113  ax-9 2121  ax-10 2142  ax-11 2158  ax-12 2175  ax-ext 2770  ax-rep 5154  ax-sep 5167  ax-nul 5174  ax-pow 5231  ax-pr 5295  ax-un 7441
This theorem depends on definitions:  df-bi 210  df-an 400  df-or 845  df-3or 1085  df-3an 1086  df-tru 1541  df-ex 1782  df-nf 1786  df-sb 2070  df-mo 2598  df-eu 2629  df-clab 2777  df-cleq 2791  df-clel 2870  df-nfc 2938  df-ne 2988  df-ral 3111  df-rex 3112  df-reu 3113  df-rmo 3114  df-rab 3115  df-v 3443  df-sbc 3721  df-csb 3829  df-dif 3884  df-un 3886  df-in 3888  df-ss 3898  df-pss 3900  df-nul 4244  df-if 4426  df-pw 4499  df-sn 4526  df-pr 4528  df-tp 4530  df-op 4532  df-uni 4801  df-int 4839  df-iun 4883  df-br 5031  df-opab 5093  df-mpt 5111  df-tr 5137  df-id 5425  df-eprel 5430  df-po 5438  df-so 5439  df-fr 5478  df-se 5479  df-we 5480  df-xp 5525  df-rel 5526  df-cnv 5527  df-co 5528  df-dm 5529  df-rn 5530  df-res 5531  df-ima 5532  df-pred 6116  df-ord 6162  df-on 6163  df-lim 6164  df-suc 6165  df-iota 6283  df-fun 6326  df-fn 6327  df-f 6328  df-f1 6329  df-fo 6330  df-f1o 6331  df-fv 6332  df-isom 6333  df-riota 7093  df-ov 7138  df-oprab 7139  df-mpo 7140  df-om 7561  df-1st 7671  df-2nd 7672  df-wrecs 7930  df-recs 7991  df-er 8272  df-map 8391  df-en 8493  df-dom 8494  df-card 9352  df-acn 9355
This theorem is referenced by:  1stcrest  22058  2ndcrest  22059  lly1stc  22101  abrexct  30478  ldgenpisyslem1  31532  saliuncl  42964  meadjiun  43105
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