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Theorem pw1mapen 17038
Description: Equinumerosity of (𝒫 1o𝑚 𝐴) and the set of subsets of 𝐴. (Contributed by Jim Kingdon, 10-Jan-2026.)
Assertion
Ref Expression
pw1mapen (𝐴𝑉 → (𝒫 1o𝑚 𝐴) ≈ 𝒫 𝐴)

Proof of Theorem pw1mapen
Dummy variables 𝑠 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 fnmap 6929 . . 3 𝑚 Fn (V × V)
2 1oex 6695 . . . 4 1o ∈ V
32pwex 4320 . . 3 𝒫 1o ∈ V
4 elex 2833 . . 3 (𝐴𝑉𝐴 ∈ V)
5 fnovex 6118 . . 3 (( ↑𝑚 Fn (V × V) ∧ 𝒫 1o ∈ V ∧ 𝐴 ∈ V) → (𝒫 1o𝑚 𝐴) ∈ V)
61, 3, 4, 5mp3an12i 1382 . 2 (𝐴𝑉 → (𝒫 1o𝑚 𝐴) ∈ V)
7 eqid 2238 . . 3 (𝑠 ∈ (𝒫 1o𝑚 𝐴) ↦ {𝑧𝐴 ∣ (𝑠𝑧) = 1o}) = (𝑠 ∈ (𝒫 1o𝑚 𝐴) ↦ {𝑧𝐴 ∣ (𝑠𝑧) = 1o})
87pw1map 17037 . 2 (𝐴𝑉 → (𝑠 ∈ (𝒫 1o𝑚 𝐴) ↦ {𝑧𝐴 ∣ (𝑠𝑧) = 1o}):(𝒫 1o𝑚 𝐴)–1-1-onto→𝒫 𝐴)
9 f1oeng 7043 . 2 (((𝒫 1o𝑚 𝐴) ∈ V ∧ (𝑠 ∈ (𝒫 1o𝑚 𝐴) ↦ {𝑧𝐴 ∣ (𝑠𝑧) = 1o}):(𝒫 1o𝑚 𝐴)–1-1-onto→𝒫 𝐴) → (𝒫 1o𝑚 𝐴) ≈ 𝒫 𝐴)
106, 8, 9syl2anc 415 1 (𝐴𝑉 → (𝒫 1o𝑚 𝐴) ≈ 𝒫 𝐴)
Colors of variables:    wff set class
This proof depends on syntax axioms:  wi 4   = wceq 1402  wcel 2209  {crab 2532  Vcvv 2821  𝒫 cpw 3688   class class class wbr 4130  cmpt 4192   × cxp 4772   Fn wfn 5372  1-1-ontowf1o 5376  cfv 5377  (class class class)co 6085  1oc1o 6680  𝑚 cmap 6922  cen 7020
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 623  ax-in2 624  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-13 2211  ax-14 2212  ax-ext 2220  ax-coll 4246  ax-sep 4249  ax-nul 4259  ax-pow 4311  ax-pr 4346  ax-un 4578  ax-setind 4684
This proof depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-fal 1408  df-nf 1514  df-sb 1816  df-eu 2089  df-mo 2090  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ne 2421  df-ral 2533  df-rex 2534  df-reu 2535  df-rab 2537  df-v 2823  df-sbc 3052  df-csb 3148  df-dif 3222  df-un 3224  df-in 3226  df-ss 3233  df-nul 3521  df-if 3639  df-pw 3690  df-sn 3715  df-pr 3716  df-op 3718  df-uni 3936  df-iun 4014  df-br 4131  df-opab 4193  df-mpt 4194  df-tr 4230  df-id 4438  df-iord 4511  df-on 4513  df-suc 4516  df-xp 4780  df-rel 4781  df-cnv 4782  df-co 4783  df-dm 4784  df-rn 4785  df-res 4786  df-ima 4787  df-iota 5337  df-fun 5379  df-fn 5380  df-f 5381  df-f1 5382  df-fo 5383  df-f1o 5384  df-fv 5385  df-ov 6088  df-oprab 6089  df-mpo 6090  df-1st 6374  df-2nd 6375  df-1o 6687  df-map 6924  df-en 7023
This theorem is used by: (None)
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