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Theorem p6exg 4291
Description: The P6 operator applied to a set yields a set. (Contributed by SF, 13-Jan-2015.)
Assertion
Ref Expression
p6exg (A VP6 A V)

Proof of Theorem p6exg
Dummy variables x y z w are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 p6eq 4239 . . 3 (x = AP6 x = P6 A)
21eleq1d 2419 . 2 (x = A → ( P6 x V ↔ P6 A V))
3 ax-typlower 4087 . . 3 yz(z yww, {z}⟫ x)
4 dfcleq 2347 . . . . . . 7 (y = P6 xz(z yz P6 x))
5 vex 2863 . . . . . . . . . 10 z V
6 elp6 4264 . . . . . . . . . 10 (z V → (z P6 xww, {z}⟫ x))
75, 6ax-mp 5 . . . . . . . . 9 (z P6 xww, {z}⟫ x)
87bibi2i 304 . . . . . . . 8 ((z yz P6 x) ↔ (z yww, {z}⟫ x))
98albii 1566 . . . . . . 7 (z(z yz P6 x) ↔ z(z yww, {z}⟫ x))
104, 9bitri 240 . . . . . 6 (y = P6 xz(z yww, {z}⟫ x))
1110biimpri 197 . . . . 5 (z(z yww, {z}⟫ x) → y = P6 x)
12 vex 2863 . . . . 5 y V
1311, 12syl6eqelr 2442 . . . 4 (z(z yww, {z}⟫ x) → P6 x V)
1413exlimiv 1634 . . 3 (yz(z yww, {z}⟫ x) → P6 x V)
153, 14ax-mp 5 . 2 P6 x V
162, 15vtoclg 2915 1 (A VP6 A V)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 176  wal 1540  wex 1541   = wceq 1642   wcel 1710  Vcvv 2860  {csn 3738  copk 4058   P6 cp6 4179
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1546  ax-5 1557  ax-17 1616  ax-9 1654  ax-8 1675  ax-6 1729  ax-7 1734  ax-11 1746  ax-12 1925  ax-ext 2334  ax-nin 4079  ax-typlower 4087  ax-sn 4088
This theorem depends on definitions:  df-bi 177  df-or 359  df-an 360  df-3an 936  df-nan 1288  df-tru 1319  df-ex 1542  df-nf 1545  df-sb 1649  df-clab 2340  df-cleq 2346  df-clel 2349  df-nfc 2479  df-ne 2519  df-ral 2620  df-rex 2621  df-v 2862  df-nin 3212  df-compl 3213  df-in 3214  df-un 3215  df-dif 3216  df-ss 3260  df-nul 3552  df-sn 3742  df-pr 3743  df-opk 4059  df-xpk 4186  df-p6 4192
This theorem is referenced by:  uni1exg  4293  imakexg  4300
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