Theorem r1rankid 4666

Description: Any set is a subset of the hierarchy of its rank.

Assertion

Ref	Expression
r1rankid	|- (A e. B -> A (_ (R1` (rank` A)))

Proof of Theorem r1rankid

Step	Hyp	Ref	Expression
1		eqid 1468	. . . . 5 |- (rank` A) = (rank` A)
2		rankr1g 4647	. . . . 5 |- (A e. B -> ((rank` A) = (rank` A) <-> (-. A e. (R1` (rank` A)) /\ A e. (R1` suc (rank` A)))))
3	1, 2	mpbii 193	. . . 4 |- (A e. B -> (-. A e. (R1` (rank` A)) /\ A e. (R1` suc (rank` A))))
4	3	pm3.27d 325	. . 3 |- (A e. B -> A e. (R1` suc (rank` A)))
5		rankon 4643	. . . 4 |- (rank` A) e. On
6		r1suc 4624	. . . 4 |- ((rank` A) e. On -> (R1` suc (rank` A)) = P~(R1` (rank` A)))
7	5, 6	ax-mp 7	. . 3 |- (R1` suc (rank` A)) = P~(R1` (rank` A))
8	4, 7	syl6eleq 1550	. 2 |- (A e. B -> A e. P~(R1` (rank` A)))
9		elpwg 2395	. 2 |- (A e. B -> (A e. P~(R1` (rank` A)) <-> A (_ (R1` (rank` A))))
10	8, 9	mpbid 195	1 |- (A e. B -> A (_ (R1` (rank` A)))

Syntax hints:  -. wn 2   -> wi 3   /\ wa 223   = wceq 953   e. wcel 955   (_ wss 2037  P~cpw 2391  Oncon0 2938  suc csuc 2940  ` cfv 3172  R1cr1 4613  rankcrnk 4614

This theorem is referenced by:  rankr1id 4669  rankr1b 4671

This theorem was proved from axioms:  ax-1 4  ax-2 5  ax-3 6  ax-mp 7  ax-7 959  ax-gen 960  ax-8 961  ax-9 962  ax-10 963  ax-11 964  ax-12 965  ax-13 966  ax-14 967  ax-17 968  ax-4 970  ax-5o 972  ax-6o 975  ax-9o 1119  ax-10o 1136  ax-16 1206  ax-11o 1213  ax-ext 1452  ax-rep 2683  ax-sep 2693  ax-nul 2700  ax-pow 2732  ax-pr 2769  ax-un 2857  ax-reg 4565  ax-inf2 4597

This theorem depends on definitions:  df-bi 147  df-or 224  df-an 225  df-3or 774  df-3an 775  df-ex 978  df-sb 1168  df-eu 1375  df-mo 1376  df-clab 1457  df-cleq 1462  df-clel 1465  df-ne 1579  df-ral 1641  df-rex 1642  df-rab 1644  df-v 1803  df-sbc 1932  df-dif 2039  df-un 2040  df-in 2041  df-ss 2043  df-nul 2271  df-if 2352  df-pw 2392  df-sn 2402  df-pr 2403  df-tp 2405  df-op 2406  df-uni 2494  df-int 2524  df-iun 2558  df-br 2610  df-opab 2657  df-tr 2671  df-eprel 2821  df-id 2824  df-po 2831  df-so 2841  df-fr 2907  df-we 2924  df-ord 2941  df-on 2942  df-lim 2943  df-suc 2944  df-om 3122  df-xp 3174  df-rel 3175  df-cnv 3176  df-co 3177  df-dm 3178  df-rn 3179  df-res 3180  df-ima 3181  df-fun 3182  df-fn 3183  df-fv 3188  df-rdg 3917  df-r1 4615  df-rank 4616

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