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Theorem bascnvimaeqv 16968
 Description: The inverse image of the universal class V under the base function is the universal class V itself. (Proposed by Mario Carneiro, 7-Mar-2020.) (Contributed by AV, 7-Mar-2020.)
Assertion
Ref Expression
bascnvimaeqv (Base “ V) = V

Proof of Theorem bascnvimaeqv
StepHypRef Expression
1 df-base 16070 . . 3 Base = Slot 1
21slotfn 16082 . 2 Base Fn V
3 fncnvimaeqv 16967 . 2 (Base Fn V → (Base “ V) = V)
42, 3ax-mp 5 1 (Base “ V) = V
 Colors of variables: wff setvar class Syntax hints:   = wceq 1631  Vcvv 3351  ◡ccnv 5248   “ cima 5252   Fn wfn 6026  1c1 10139  Basecbs 16064 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1870  ax-4 1885  ax-5 1991  ax-6 2057  ax-7 2093  ax-9 2154  ax-10 2174  ax-11 2190  ax-12 2203  ax-13 2408  ax-ext 2751  ax-sep 4915  ax-nul 4923  ax-pr 5034 This theorem depends on definitions:  df-bi 197  df-an 383  df-or 837  df-3an 1073  df-tru 1634  df-ex 1853  df-nf 1858  df-sb 2050  df-eu 2622  df-mo 2623  df-clab 2758  df-cleq 2764  df-clel 2767  df-nfc 2902  df-ne 2944  df-ral 3066  df-rex 3067  df-rab 3070  df-v 3353  df-sbc 3588  df-dif 3726  df-un 3728  df-in 3730  df-ss 3737  df-nul 4064  df-if 4226  df-sn 4317  df-pr 4319  df-op 4323  df-uni 4575  df-br 4787  df-opab 4847  df-mpt 4864  df-id 5157  df-xp 5255  df-rel 5256  df-cnv 5257  df-co 5258  df-dm 5259  df-rn 5260  df-res 5261  df-ima 5262  df-iota 5994  df-fun 6033  df-fn 6034  df-fv 6039  df-slot 16068  df-base 16070 This theorem is referenced by: (None)
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