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Theorem pw1mapen 16757
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 6888 . . 3 𝑚 Fn (V × V)
2 1oex 6654 . . . 4 1o ∈ V
32pwex 4295 . . 3 𝒫 1o ∈ V
4 elex 2824 . . 3 (𝐴𝑉𝐴 ∈ V)
5 fnovex 6082 . . 3 (( ↑𝑚 Fn (V × V) ∧ 𝒫 1o ∈ V ∧ 𝐴 ∈ V) → (𝒫 1o𝑚 𝐴) ∈ V)
61, 3, 4, 5mp3an12i 1378 . 2 (𝐴𝑉 → (𝒫 1o𝑚 𝐴) ∈ V)
7 eqid 2232 . . 3 (𝑠 ∈ (𝒫 1o𝑚 𝐴) ↦ {𝑧𝐴 ∣ (𝑠𝑧) = 1o}) = (𝑠 ∈ (𝒫 1o𝑚 𝐴) ↦ {𝑧𝐴 ∣ (𝑠𝑧) = 1o})
87pw1map 16756 . 2 (𝐴𝑉 → (𝑠 ∈ (𝒫 1o𝑚 𝐴) ↦ {𝑧𝐴 ∣ (𝑠𝑧) = 1o}):(𝒫 1o𝑚 𝐴)–1-1-onto→𝒫 𝐴)
9 f1oeng 6995 . 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 411 1 (𝐴𝑉 → (𝒫 1o𝑚 𝐴) ≈ 𝒫 𝐴)
Colors of variables: wff set class
Syntax hints:  wi 4   = wceq 1398  wcel 2203  {crab 2524  Vcvv 2812  𝒫 cpw 3668   class class class wbr 4108  cmpt 4170   × cxp 4746   Fn wfn 5346  1-1-ontowf1o 5350  cfv 5351  (class class class)co 6049  1oc1o 6639  𝑚 cmap 6881  cen 6972
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 619  ax-in2 620  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-13 2205  ax-14 2206  ax-ext 2214  ax-coll 4224  ax-sep 4227  ax-nul 4235  ax-pow 4286  ax-pr 4321  ax-un 4553  ax-setind 4658
This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-fal 1404  df-nf 1510  df-sb 1812  df-eu 2083  df-mo 2084  df-clab 2219  df-cleq 2225  df-clel 2228  df-nfc 2373  df-ne 2413  df-ral 2525  df-rex 2526  df-reu 2527  df-rab 2529  df-v 2814  df-sbc 3042  df-csb 3138  df-dif 3212  df-un 3214  df-in 3216  df-ss 3223  df-nul 3508  df-if 3620  df-pw 3670  df-sn 3694  df-pr 3695  df-op 3697  df-uni 3914  df-iun 3992  df-br 4109  df-opab 4171  df-mpt 4172  df-tr 4208  df-id 4413  df-iord 4486  df-on 4488  df-suc 4491  df-xp 4754  df-rel 4755  df-cnv 4756  df-co 4757  df-dm 4758  df-rn 4759  df-res 4760  df-ima 4761  df-iota 5311  df-fun 5353  df-fn 5354  df-f 5355  df-f1 5356  df-fo 5357  df-f1o 5358  df-fv 5359  df-ov 6052  df-oprab 6053  df-mpo 6054  df-1st 6333  df-2nd 6334  df-1o 6646  df-map 6883  df-en 6975
This theorem is referenced by: (None)
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