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Theorem pw1mapen 16896
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 6902 . . 3 𝑚 Fn (V × V)
2 1oex 6668 . . . 4 1o ∈ V
32pwex 4301 . . 3 𝒫 1o ∈ V
4 elex 2827 . . 3 (𝐴𝑉𝐴 ∈ V)
5 fnovex 6091 . . 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 2234 . . 3 (𝑠 ∈ (𝒫 1o𝑚 𝐴) ↦ {𝑧𝐴 ∣ (𝑠𝑧) = 1o}) = (𝑠 ∈ (𝒫 1o𝑚 𝐴) ↦ {𝑧𝐴 ∣ (𝑠𝑧) = 1o})
87pw1map 16895 . 2 (𝐴𝑉 → (𝑠 ∈ (𝒫 1o𝑚 𝐴) ↦ {𝑧𝐴 ∣ (𝑠𝑧) = 1o}):(𝒫 1o𝑚 𝐴)–1-1-onto→𝒫 𝐴)
9 f1oeng 7009 . 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 2205  {crab 2526  Vcvv 2815  𝒫 cpw 3674   class class class wbr 4114  cmpt 4176   × cxp 4752   Fn wfn 5352  1-1-ontowf1o 5356  cfv 5357  (class class class)co 6058  1oc1o 6653  𝑚 cmap 6895  cen 6986
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 2207  ax-14 2208  ax-ext 2216  ax-coll 4230  ax-sep 4233  ax-nul 4241  ax-pow 4292  ax-pr 4327  ax-un 4559  ax-setind 4664
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 2085  df-mo 2086  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-ne 2415  df-ral 2527  df-rex 2528  df-reu 2529  df-rab 2531  df-v 2817  df-sbc 3046  df-csb 3142  df-dif 3216  df-un 3218  df-in 3220  df-ss 3227  df-nul 3513  df-if 3625  df-pw 3676  df-sn 3700  df-pr 3701  df-op 3703  df-uni 3920  df-iun 3998  df-br 4115  df-opab 4177  df-mpt 4178  df-tr 4214  df-id 4419  df-iord 4492  df-on 4494  df-suc 4497  df-xp 4760  df-rel 4761  df-cnv 4762  df-co 4763  df-dm 4764  df-rn 4765  df-res 4766  df-ima 4767  df-iota 5317  df-fun 5359  df-fn 5360  df-f 5361  df-f1 5362  df-fo 5363  df-f1o 5364  df-fv 5365  df-ov 6061  df-oprab 6062  df-mpo 6063  df-1st 6347  df-2nd 6348  df-1o 6660  df-map 6897  df-en 6989
This theorem is referenced by: (None)
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