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Theorem rankbnd2 9781
Description: The rank of a set is bounded by the successor of a bound for its members. (Contributed by NM, 15-Sep-2006.)
Hypothesis
Ref Expression
rankr1b.1 𝐴 ∈ V
Assertion
Ref Expression
rankbnd2 (𝐵 ∈ On → (∀𝑥𝐴 (rank‘𝑥) ⊆ 𝐵 ↔ (rank‘𝐴) ⊆ suc 𝐵))
Distinct variable groups:   𝑥,𝐴   𝑥,𝐵

Proof of Theorem rankbnd2
StepHypRef Expression
1 rankuni 9775 . . . . 5 (rank‘ 𝐴) = (rank‘𝐴)
2 rankr1b.1 . . . . . 6 𝐴 ∈ V
32rankuni2 9767 . . . . 5 (rank‘ 𝐴) = 𝑥𝐴 (rank‘𝑥)
41, 3eqtr3i 2761 . . . 4 (rank‘𝐴) = 𝑥𝐴 (rank‘𝑥)
54sseq1i 3962 . . 3 ( (rank‘𝐴) ⊆ 𝐵 𝑥𝐴 (rank‘𝑥) ⊆ 𝐵)
6 iunss 5000 . . 3 ( 𝑥𝐴 (rank‘𝑥) ⊆ 𝐵 ↔ ∀𝑥𝐴 (rank‘𝑥) ⊆ 𝐵)
75, 6bitr2i 276 . 2 (∀𝑥𝐴 (rank‘𝑥) ⊆ 𝐵 (rank‘𝐴) ⊆ 𝐵)
8 rankon 9707 . . . 4 (rank‘𝐴) ∈ On
98onssi 7780 . . 3 (rank‘𝐴) ⊆ On
10 eloni 6327 . . 3 (𝐵 ∈ On → Ord 𝐵)
11 ordunisssuc 6425 . . 3 (((rank‘𝐴) ⊆ On ∧ Ord 𝐵) → ( (rank‘𝐴) ⊆ 𝐵 ↔ (rank‘𝐴) ⊆ suc 𝐵))
129, 10, 11sylancr 587 . 2 (𝐵 ∈ On → ( (rank‘𝐴) ⊆ 𝐵 ↔ (rank‘𝐴) ⊆ suc 𝐵))
137, 12bitrid 283 1 (𝐵 ∈ On → (∀𝑥𝐴 (rank‘𝑥) ⊆ 𝐵 ↔ (rank‘𝐴) ⊆ suc 𝐵))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 206  wcel 2113  wral 3051  Vcvv 3440  wss 3901   cuni 4863   ciun 4946  Ord word 6316  Oncon0 6317  suc csuc 6319  cfv 6492  rankcrnk 9675
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1968  ax-7 2009  ax-8 2115  ax-9 2123  ax-10 2146  ax-11 2162  ax-12 2184  ax-ext 2708  ax-rep 5224  ax-sep 5241  ax-nul 5251  ax-pow 5310  ax-pr 5377  ax-un 7680  ax-reg 9497  ax-inf2 9550
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3or 1087  df-3an 1088  df-tru 1544  df-fal 1554  df-ex 1781  df-nf 1785  df-sb 2068  df-mo 2539  df-eu 2569  df-clab 2715  df-cleq 2728  df-clel 2811  df-nfc 2885  df-ne 2933  df-ral 3052  df-rex 3061  df-reu 3351  df-rab 3400  df-v 3442  df-sbc 3741  df-csb 3850  df-dif 3904  df-un 3906  df-in 3908  df-ss 3918  df-pss 3921  df-nul 4286  df-if 4480  df-pw 4556  df-sn 4581  df-pr 4583  df-op 4587  df-uni 4864  df-int 4903  df-iun 4948  df-br 5099  df-opab 5161  df-mpt 5180  df-tr 5206  df-id 5519  df-eprel 5524  df-po 5532  df-so 5533  df-fr 5577  df-we 5579  df-xp 5630  df-rel 5631  df-cnv 5632  df-co 5633  df-dm 5634  df-rn 5635  df-res 5636  df-ima 5637  df-pred 6259  df-ord 6320  df-on 6321  df-lim 6322  df-suc 6323  df-iota 6448  df-fun 6494  df-fn 6495  df-f 6496  df-f1 6497  df-fo 6498  df-f1o 6499  df-fv 6500  df-ov 7361  df-om 7809  df-2nd 7934  df-frecs 8223  df-wrecs 8254  df-recs 8303  df-rdg 8341  df-r1 9676  df-rank 9677
This theorem is referenced by: (None)
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