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Theorem pw1mapen 17009
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 6923 . . 3 𝑚 Fn (V × V)
2 1oex 6689 . . . 4 1o ∈ V
32pwex 4318 . . 3 𝒫 1o ∈ V
4 elex 2833 . . 3 (𝐴𝑉𝐴 ∈ V)
5 fnovex 6112 . . 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 17008 . 2 (𝐴𝑉 → (𝑠 ∈ (𝒫 1o𝑚 𝐴) ↦ {𝑧𝐴 ∣ (𝑠𝑧) = 1o}):(𝒫 1o𝑚 𝐴)–1-1-onto→𝒫 𝐴)
9 f1oeng 7037 . 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
Syntax hints:  wi 4   = wceq 1402  wcel 2209  {crab 2532  Vcvv 2821  𝒫 cpw 3688   class class class wbr 4128  cmpt 4190   × cxp 4770   Fn wfn 5370  1-1-ontowf1o 5374  cfv 5375  (class class class)co 6079  1oc1o 6674  𝑚 cmap 6916  cen 7014
This theorem was proved from 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 4244  ax-sep 4247  ax-nul 4257  ax-pow 4309  ax-pr 4344  ax-un 4576  ax-setind 4682
This theorem 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 3714  df-pr 3715  df-op 3717  df-uni 3934  df-iun 4012  df-br 4129  df-opab 4191  df-mpt 4192  df-tr 4228  df-id 4436  df-iord 4509  df-on 4511  df-suc 4514  df-xp 4778  df-rel 4779  df-cnv 4780  df-co 4781  df-dm 4782  df-rn 4783  df-res 4784  df-ima 4785  df-iota 5335  df-fun 5377  df-fn 5378  df-f 5379  df-f1 5380  df-fo 5381  df-f1o 5382  df-fv 5383  df-ov 6082  df-oprab 6083  df-mpo 6084  df-1st 6368  df-2nd 6369  df-1o 6681  df-map 6918  df-en 7017
This theorem is referenced by: (None)
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