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Theorem r1fnon 4660
Description: The cumulative hierarchy of sets function is a function on the class of ordinal numbers.
Assertion
Ref Expression
r1fnon |- R1 Fn On

Proof of Theorem r1fnon
StepHypRef Expression
1 rdgfnon 3945 . 2 |- rec({<.x, y>. | y = P~x}, (/)) Fn On
2 df-r1 4653 . . 3 |- R1 = rec({<.x, y>. | y = P~x}, (/))
3 fneq1 3588 . . 3 |- (R1 = rec({<.x, y>. | y = P~x}, (/)) -> (R1 Fn On <-> rec({<.x, y>. | y = P~x}, (/)) Fn On))
42, 3ax-mp 7 . 2 |- (R1 Fn On <-> rec({<.x, y>. | y = P~x}, (/)) Fn On)
51, 4mpbir 190 1 |- R1 Fn On
Colors of variables: wff set class
Syntax hints:   <-> wb 146   = wceq 958  (/)c0 2283  P~cpw 2405  {copab 2671  Oncon0 2954   Fn wfn 3183  reccrdg 3937  R1cr1 4651
This theorem is referenced by:  r1tr 4664  unir1 4677  rankr1 4684
This theorem was proved from axioms:  ax-1 4  ax-2 5  ax-3 6  ax-mp 7  ax-7 964  ax-gen 965  ax-8 966  ax-9 967  ax-10 968  ax-11 969  ax-12 970  ax-13 971  ax-14 972  ax-17 973  ax-4 975  ax-5o 977  ax-6o 980  ax-9o 1125  ax-10o 1142  ax-16 1212  ax-11o 1220  ax-ext 1462  ax-rep 2698  ax-sep 2708  ax-nul 2715  ax-pow 2748  ax-pr 2785  ax-un 2872
This theorem depends on definitions:  df-bi 147  df-or 224  df-an 225  df-3or 778  df-3an 779  df-ex 983  df-sb 1174  df-eu 1384  df-mo 1385  df-clab 1467  df-cleq 1472  df-clel 1475  df-ne 1590  df-ral 1652  df-rex 1653  df-rab 1655  df-v 1815  df-sbc 1945  df-dif 2052  df-un 2053  df-in 2054  df-ss 2056  df-nul 2284  df-pw 2406  df-sn 2416  df-pr 2417  df-tp 2419  df-op 2420  df-uni 2508  df-iun 2572  df-br 2625  df-opab 2672  df-tr 2686  df-eprel 2838  df-id 2841  df-po 2846  df-so 2856  df-fr 2923  df-we 2940  df-ord 2957  df-on 2958  df-suc 2960  df-xp 3190  df-rel 3191  df-cnv 3192  df-co 3193  df-dm 3194  df-rn 3195  df-res 3196  df-ima 3197  df-fun 3198  df-fn 3199  df-fv 3204  df-rdg 3938  df-r1 4653
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